Static Face Seal with a Dovetail Gland

Sealing Basics

Cross-section squeeze: Cross-section squeeze is defined as the compression of the seal cross-section, which is a result of the gland depth being less than the seal cross-section diameter. It is recommended that static seals have a squeeze percentage of 20-25% at maximum gland fill. This range ensures that the seal will not be over-compressed, which could result in premature failure.

Squeeze % = ((Seal Cross-Section - Gland Cross-Section)/Seal Cross-Section) x 100%

Diameter Stretch: Stretch occurs when the inside diameter (I.D.) of the seal is smaller than the gland I.D., requiring extension of the seals diameter for installation and fit. It is generally recommended that a seal not be stretched more than 50% during installation. In smaller diameter o-rings, where the recommended installation stretch is exceeded, sufficient time should be allowed for the o-ring to return to its normal diameter before closing the gland. An installed I.D. stretch percentage of 1-3% is recommended for all gland configurations over 0.500" diameter. The recommended dimensions for glands with diameters less than 0.500" do provide for stretching the o-ring, in the installed state, greater than this amount. Any time an I.D. of an o-ring, in its installed state, is stretched greater than 3%, seal life will be compromised. On face seals, the stretch ensures the seal will stay in the gland. Overstretching a seal may cause additional stresses in the material and lead to premature failure. Rod seals are normally compressed or have line-to-line fit on the outside diameter without any stretch.

Stretch % = ((Gland I.D. - Seal I.D.)/Seal I.D.) x 100%

Gland Volume Fill: Gland volume fill is defined as the amount of gland volume occupied by the seal in a compressed state. The recommended ranges for gland volume fill percentage are: static applications: 85-90%. These ranges allow for tolerance variations, thermal expansion and fluid volume. They also prevent excessive movement of the seal in the gland.

Gland Fill % = (Seal Volume/Gland Volume) x 100%

Material Selection: The correct balance of physical properties and service media compatibility ensures that the hardware and seal combination will meet the application requirements. In semiconductor manufacturing, the seal and hardware material face an additional requirement: The combination must not add contaminants during the wafer fabrication process.

Gland Surface Finish: To optimize the sealing integrity and performance life, the gland surface should be free of nicks, dents and scratches. A gland surface finish of 8-16 Ra is recommended for vacuum systems. A gland surface finish of 16-32 Ra is recommended for pressure or atmospheric systems.

 

Standard Dovetail Face Sealing Gland
Cross-Sectional Dimensions

AS 568A Series O-Ring Cross-
Section
Gland Width (W) Gland Depth (D) Gland Corner Radii
  Nom Tol +/- Nom Tol +/- Nom Tol +/- (R1) (R2)
-000
-100
-200
-300
-400
0.070
0.103
0.139
0.210
0.275
0.003
0.003
0.004
0.005
0.006
0.064
0.088
0.120
0.176
0.235
0.002
0.003
0.003
0.003
0.003
0.052
0.078
0.106
0.164
0.215
0.002
0.003
0.003
0.004
0.004
0.015
0.015
0.031
0.031
0.063
0.005
0.010
0.010
0.015
0.015

 

 

Select Gland I.D.
semihnbk7-8.tif (97264 bytes)

Standard Face Sealing Diametrical Dimensions

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-005 0.070 0.003 0.101 0.005 0.106 0.002 0.241 0.002 0.178 0.002
-006
-007
-008
-009
-010
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
0.114
0.145
0.176
0.208
0.239
0.005
0.005
0.005
0.005
0.005
0.119
0.150
0.181
0.213
0.244
0.002
0.002
0.002
0.002
0.002
0.254
0.285
0.316
0.348
0.379
0.002
0.002
0.002
0.002
0.002
0.191
0.222
0.253
0.285
0.316
0.002
0.002
0.002
0.002
0.002
-011
-012
-013
-014
-015
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
0.301
0.364
0.426
0.489
0.551
0.005
0.005
0.005
0.005
0.007
0.306
0.369
0.431
0.494
0.558
0.002
0.002
0.002
0.002
0.002
0.441
0.504
0.566
0.629
0.691
0.002
0.002
0.002
0.002
0.002
0.378
0.441
0.503
0.568
0.630
0.002
0.002
0.002
0.002
0.002
-016
-017
-018
-019
-020
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
0.614
0.676
0.739
0.801
0.864
0.009
0.009
0.009
0.009
0.009
0.623
0.685
0.750
0.813
0.877
0.002
0.002
0.002
0.002
0.002
0.754
0.816
0.879
0.941
1.004
0.002
0.002
0.002
0.002
0.002
0.695
0.757
0.822
0.886
0.950
0.002
0.002
0.002
0.002
0.002
-021
-022
-023
-024
-025
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
0.926
0.989
1.051
1.114
1.176
0.009
0.010
0.010
0.010
0.011
0.940
1.004
1.067
1.131
1.194
0.002
0.002
0.002
0.002
0.002
1.066
1.129
1.191
1.254
1.316
0.002
0.002
0.002
0.002
0.002
1.012
1.076
1.139
1.202
1.265
0.002
0.002
0.002
0.002
0.002
-026
-027
-028
-029
-030
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
1.239
1.301
1.364
1.489
1.614
0.011
0.011
0.013
0.013
0.013
1.258
1.321
1.384
1.511
1.638
0.002
0.002
0.002
0.002
0.002
1.379
1.441
1.504
1.629
1.754
0.002
0.002
0.002
0.002
0.002
1.328
1.391
1.456
1.582
1.708
0.002
0.002
0.002
0.002
0.002
-031
-032
-033
-034
-035
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
1.739
1.864
1.989
2.114
2.239
0.015
0.015
0.018
0.018
0.018
1.765
1.892
2.019
2.146
2.273
0.002
0.002
0.002
0.002
0.002
1.879
2.004
2.129
2.254
2.379
0.002
0.002
0.002
0.002
0.002
1.835
1.961
2.089
2.216
2.341
0.002
0.002
0.002
0.002
0.002
-036
-037
-038
-039
-040
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
2.364
2.489
2.614
2.739
2.864
0.018
0.018
0.020
0.020
0.020
2.399
2.526
2.653
2.780
2.907
0.002
0.002
0.002
0.002
0.002
2.504
2.629
2.754
2.879
3.004
0.002
0.002
0.002
0.002
0.002
2.467
2.593
2.720
2.846
2.973
0.002
0.002
0.002
0.002
0.002
-041
-042
-043
-044
-045
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
2.989
3.239
3.489
3.739
3.989
0.024
0.024
0.024
0.027
0.027
3.034
3.288
3.541
3.795
4.049
0.002
0.002
0.002
0.002
0.002
3.129
3.379
3.629
3.879
4.129
0.002
0.002
0.002
0.002
0.002
3.100
3.352
3.604
3.859
4.112
0.002
0.002
0.002
0.002
0.002
-046
-047
-048
-049
-050
0.070
0.070
0.070
0.070
0.070
0.003
0.003
0.003
0.003
0.003
4.239
4.489
4.739
4.989
5.239
0.030
0.030
0.030
0.037
0.037
4.303
4.556
4.810
5.064
5.318
0.002
0.002
0.002
0.002
0.002
4.379
4.629
4.879
5.129
5.379
0.002
0.002
0.002
0.002
0.002
4.364
4.618
4.873
5.125
5.379
0.002
0.002
0.002
0.002
0.002

Dimensions in inches

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-102
-103
-104
-105
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.049
0.081
0.112
0.143
0.004
0.005
0.005
0.005
0.050
0.082
0.114
0.145
0.002
0.002
0.002
0.002
0.255
0.287
0.318
0.349
0.002
0.002
0.002
0.002
0.158
0.191
0.222
0.253
0.002
0.002
0.002
0.002
-106
-107
-108
-109
-110
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
0.174
0.206
0.237
0.299
0.362
0.005
0.005
0.005
0.005
0.005
0.117
0.209
0.241
0.303
0.367
0.002
0.002
0.002
0.002
0.002
0.380
0.412
0.443
0.505
0.568
0.002
0.002
0.002
0.002
0.002
0.284
0.316
0.347
0.409
0.472
0.002
0.002
0.002
0.002
0.002
-111
-112
-113
-114
-115
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
0.424
0.487
0.549
0.612
0.674
0.005
0.005
0.007
0.009
0.009
0.430
0.494
0.557
0.621
0.684
0.002
0.002
0.002
0.002
0.002
0.630
0.693
0.755
0.818
0.880
0.002
0.002
0.002
0.002
0.002
0.535
0.600
0.662
0.726
0.789
0.002
0.002
0.002
0.002
0.002
-116
-117
-118
-119
-120
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
0.737
0.799
0.862
0.924
0.987
0.090
0.010
0.010
0.010
0.010
0.748
0.811
0.875
0.938
1.002
0.002
0.002
0.002
0.002
0.002
0.943
1.005
1.068
1.130
1.193
0.002
0.002
0.002
0.002
0.002
0.854
0.917
0.982
1.044
1.108
0.002
0.002
0.002
0.002
0.002
-121
-122
-123
-124
-125
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
1.049
1.112
1.174
1.237
1.299
0.010
0.010
0.012
0.012
0.012
1.065
1.129
1.192
1.256
1.318
0.002
0.002
0.002
0.002
0.002
1.255
1.318
1.380
1.443
1.505
0.002
0.002
0.002
0.002
0.002
1.170
1.233
1.297
1.361
1.423
0.002
0.002
0.002
0.002
0.002
-126
-127
-128
-129
-130
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
1.362
1.424
1.487
1.549
1.612
0.012
0.012
0.012
0.015
0.015
1.382
1.445
1.509
1.572
1.636
0.002
0.002
0.002
0.002
0.002
1.568
1.630
1.693
1.755
1.818
0.002
0.002
0.002
0.002
0.002
1.487
1.548
1.612
1.677
1.741
0.002
0.002
0.002
0.002
0.002

-131
-132
-133
-134
-135

0.103
0.103
0.103
0.103
0.103

0.003
0.003
0.003
0.003
0.003

1.674
1.737
1.799
1.862
1.925
0.015
0.015
0.015
0.015
0.017
1.699
1.763
1.826
1.890
1.954

0.002
0.002
0.002
0.002
0.002

1.880
1.943
2.005
2.068
2.131

0.002
0.002
0.002
0.002
0.002

1.803
1.866
1.929
1.991
2.057
0.002
0.002
0.002
0.002
0.002

-136
-137
-138
-139
-140

0.103
0.103
0.103
0.103
0.103

0.003
0.003
0.003
0.003
0.003

1.987
2.050
2.112
2.175
2.237
0.017
0.017
0.017
0.017
0.017
2.017
2.081
2.144
2.208
2.271

0.002
0.002
0.002
0.002
0.002

2.193
2.256
2.318
2.381
2.443

0.002
0.002
0.002
0.002
0.002

2.120
2.184
2.246
2.309
2.372
0.002
0.002
0.002
0.002
0.002

-131
-132
-133
-134
-135

0.103
0.103
0.103
0.103
0.103

0.003
0.003
0.003
0.003
0.003

1.674
1.737
1.799
1.862
1.925
0.015
0.015
0.015
0.015
0.017
1.699
1.763
1.826
1.890
1.954

0.002
0.002
0.002
0.002
0.002

1.880
1.943
2.005
2.068
2.131

0.002
0.002
0.002
0.002
0.002

1.803
1.866
1.929
1.991
2.057
0.002
0.002
0.002
0.002
0.002

-136
-137
-138
-139
-140

0.103
0.103
0.103
0.103
0.103

0.003
0.003
0.003
0.003
0.003

1.987
2.050
2.112
2.175
2.237
0.017
0.017
0.017
0.017
0.017
2.017
2.081
2.144
2.208
2.271

0.002
0.002
0.002
0.002
0.002

2.193
2.256
2.318
2.381
2.443

0.002
0.002
0.002
0.002
0.002

2.120
2.184
2.246
2.309
2.372
0.002
0.002
0.002
0.002
0.002
-141
-142
-143
-144
-145
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
2.300
2.362
2.425
2.487
2.550
0.020
0.020
0.020
0.020
0.020
2.335
2.397
2.461
2.524
2.588
0.002
0.002
0.002
0.002
0.002
2.506
2.568
2.631
2.693
2.756
0.002
0.002
0.002
0.002
0.002
2.435
2.500
2.564
2.626
2.688
0.002
0.002
0.002
0.002
0.002
-146
-147
-148
-149
-150
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
2.612
2.675
2.737
2.800
2.862
0.020
0.022
0.022
0.022
0.022
2.651
2.715
2.778
2.842
2.905
0.002
0.002
0.002
0.002
0.002
2.818
2.881
2.943
3.006
3.068
0.002
0.002
0.002
0.002
0.002
2.752
2.816
2.878
2.942
3.004
0.002
0.002
0.002
0.002
0.002
-151
-152
-153
-154
-155
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
2.987
3.237
3.487
3.737
3.987
0.024
0.024
0.024
0.028
0.028
3.032
3.286
3.539
3.793
4.047
0.002
0.002
0.002
0.002
0.002
3.193
3.443
3.693
3.943
4.193
0.002
0.002
0.002
0.002
0.002
3.133
3.384
3.638
3.891
4.147
0.002
0.002
0.002
0.002
0.002
-156
-157
-158
-159
-160
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
4.237
4.487
4.737
4.987
5.237
0.030
0.030
0.030
0.035
0.035
4.301
4.554
4.808
5.062
5.316
0.002
0.002
0.002
0.002
0.002
4.443
4.693
4.943
5.193
5.443
0.002
0.002
0.002
0.002
0.002
4.400
4.657
4.911
5.165
5.419
0.002
0.002
0.002
0.002
0.002
-161
-162
-163
-164
-165
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
5.487
5.737
5.987
6.237
6.487
0.035
0.035
0.035
0.040
0.040
5.569
5.823
6.077
6.331
6.584
0.002
0.002
0.002
0.002
0.002
5.693
5.943
6.193
6.443
6.693
0.002
0.002
0.002
0.002
0.002
5.672
5.926
6.180
6.434
6.687
0.002
0.002
0.002
0.002
0.002
-166
-167
-168
-169
-170
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
6.737
6.987
7.237
7.487
7.737
0.040
0.040
0.045
0.045
0.045
6.838
7.092
7.346
7.599
7.853
0.002
0.002
0.002
0.002
0.002
6.943
7.193
7.443
7.693
7.943
0.002
0.002
0.002
0.002
0.002
6.941
7.195
7.449
7.702
7.956
0.002
0.002
0.002
0.002
0.002
-171
-172
-173
-174
-175
0.103
0.103
0.103
0.103
0.103
0.003
0.003
0.003
0.003
0.003
7.987
8.237
8.487
8.737
8.987
0.045
0.050
0.050
0.050
0.050
8.107
8.361
8.614
8.868
9.122
0.002
0.002
0.002
0.002
0.002
8.193
8.443
8.693
8.943
9.193
0.002
0.002
0.002
0.002
0.002
8.210
8.464
8.717
8.971
9.225
0.002
0.002
0.002
0.002
0.002
-176
-177
-178
0.103
0.103
0.103
0.003
0.003
0.003
9.237
9.487
9.737
0.055
0.055
0.055
9.376
9.629
9.883
0.002
0.002
0.002
9.443
9.693
9.943
0.002
0.002
0.002
9.479
9.732
9.986
0.002
0.002
0.002

Dimensions in inches

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-201
-202
-203
-204
-205
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
0.171
0.234
0.296
0.359
0.421
0.005
0.005
0.005
0.005
0.005
0.174
0.238
0.300
0.364
0.427
0.002
0.002
0.002
0.002
0.002
0.449
0.512
0.574
0.637
0.699
0.002
0.002
0.002
0.002
0.002
0.317
0.380
0.442
0.506
0.569
0.002
0.002
0.002
0.002
0.002
-206
-207
-208
-209
-210
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
0.484
0.546
0.609
0.671
0.734
0.005
0.007
0.009
0.009
0.010
0.491
0.554
0.618
0.681
0.745
0.002
0.002
0.002
0.002
0.002
0.762
0.824
0.887
0.949
1.012
0.002
0.002
0.002
0.002
0.002
0.633
0.696
0.759
0.823
0.887
0.002
0.002
0.002
0.002
0.002
-211
-212
-213
-214
-215
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
0.796
0.859
0.921
0.984
1.046
0.010
0.010
0.010
0.010
0.010
0.808
0.872
0.935
0.999
1.062
0.002
0.002
0.002
0.002
0.002
1.074
1.137
1.199
1.262
1.324
0.002
0.002
0.002
0.002
0.002
0.950
1.015
1.077
1.141
1.203
0.002
0.002
0.002
0.002
0.002
-216
-217
-218
-219
-220
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
1.109
1.171
1.234
1.296
1.359
0.012
0.012
0.012
0.012
0.012
1.126
1.189
1.253
1.315
1.379
0.002
0.002
0.002
0.002
0.002
1.387
1.449
1.512
1.574
1.637
0.002
0.002
0.002
0.002
0.002
1.268
1.330
1.394
1.456
1.519
0.002
0.002
0.002
0.002
0.002
-221
-222
-223
-224
-225
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
1.421
1.484
1.609
1.734
1.859
0.012
0.015
0.015
0.015
0.018
1.442
1.506
1.633
1.760
1.887
0.002
0.002
0.002
0.002
0.002
1.699
1.762
1.887
2.012
2.137
0.002
0.002
0.002
0.002
0.002
1.582
1.649
1.774
1.899
2.028
0.002
0.002
0.002
0.002
0.002
-226
-227
-228
-229
-230
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
1.984
2.109
2.234
2.359
2.484
0.018
0.018
0.020
0.020
0.020
2.014
2.141
2.268
2.394
2.521
0.002
0.002
0.002
0.002
0.002
2.262
2.387
2.512
2.637
2.762
0.002
0.002
0.002
0.002
0.002
2.153
2.280
2.407
2.533
2.660
0.002
0.002
0.002
0.002
0.002
-231
-232
-233
-234
-235
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
2.609
2.734
2.859
2.984
3.109
0.020
0.024
0.024
0.024
0.024
2.648
2.775
2.902
3.029
3.156
0.002
0.002
0.002
0.002
0.002
2.887
3.012
3.137
3.262
3.387
0.002
0.002
0.002
0.002
0.002
2.787
2.914
3.041
3.168
3.295
0.002
0.002
0.002
0.002
0.002
-236
-237
-238
-239
-240
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
3.234
3.359
3.484
3.609
3.734
0.024
0.024
0.024
0.028
0.028
3.283
3.409
3.536
3.663
3.790
0.002
0.002
0.002
0.002
0.002
3.512
3.637
3.762
3.887
4.012
0.002
0.002
0.002
0.002
0.002
3.422
3.548
3.675
3.802
3.929
0.002
0.002
0.002
0.002
0.002
-241
-242
-243
-244
-245
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
3.859
3.984
4.109
4.234
4.359
0.028
0.028
0.028
0.030
0.030
3.917
4.044
4.171
4.298
4.424
0.002
0.002
0.002
0.002
0.002
4.137
4.262
4.387
4.512
4.637
0.002
0.002
0.002
0.002
0.002
4.056
4.183
4.310
4.437
4.563
0.002
0.002
0.002
0.002
0.002
-246
-247
-248
-249
-250
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
4.484
4.609
4.734
4.859
4.984
0.030
0.030
0.030
0.035
0.035
4.551
4.678
4.805
4.932
5.059
0.002
0.002
0.002
0.002
0.002
4.762
4.887
5.012
5.137
5.262
0.002
0.002
0.002
0.002
0.002
4.690
4.817
4.944
5.071
5.198
0.002
0.002
0.002
0.002
0.002
-251
-252
-253
-254
-255
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
5.109
5.234
5.359
5.484
5.609
0.035
0.035
0.035
0.035
0.035
5.186
5.313
5.439
5.566
5.693
0.002
0.002
0.002
0.002
0.002
5.387
5.512
5.637
5.762
5.887
0.002
0.002
0.002
0.002
0.002
5.325
5.452
5.578
5.705
5.832
0.002
0.002
0.002
0.002
0.002
-256
-257
-258
-259
-260
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
5.734
5.859
5.984
6.234
6.484
0.035
0.035
0.035
0.040
0.040
5.820
5.947
6.074
6.328
6.581
0.002
0.002
0.002
0.002
0.002
6.012
6.137
6.262
6.512
6.762
0.002
0.002
0.002
0.002
0.002
5.959
6.086
6.213
6.467
6.720
0.002
0.002
0.002
0.002
0.002
-261
-262
-263
-264
-265
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
6.734
6.984
7.234
7.484
7.734
0.040
0.040
0.040
0.045
0.045
6.835
7.089
7.343
7.596
7.850
0.002
0.002
0.002
0.002
0.002
7.012
7.262
7.512
7.762
8.012
0.002
0.002
0.002
0.002
0.002
6.974
7.228
7.482
7.735
7.989
0.002
0.002
0.002
0.002
0.002
-266
-267
-268
-269
-270
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
7.984
8.234
8.484
8.734
8.984
0.045
0.050
0.050
0.050
0.050
8.104
8.358
8.611
8.865
9.119
0.002
0.002
0.002
0.002
0.002
8.262
8.512
8.762
9.012
9.262
0.002
0.002
0.002
0.002
0.002
8.243
8.497
8.750
9.004
9.258
0.002
0.002
0.002
0.002
0.002
-271
-272
-273
-274
-275
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
9.234
9.484
9.734
9.984
10.484
0.055
0.055
0.055
0.055
0.055
9.373
9.626
9.880
10.134
10.641
0.002
0.002
0.002
0.002
0.002
9.512
9.762
10.012
10.262
10.762
0.002
0.002
0.002
0.002
0.002
9.512
9.765
10.019
10.273
10.780
0.002
0.002
0.002
0.002
0.002
-276
-277
-278
-279
-280
0.139
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
0.004
10.984
11.484
11.984
12.984
13.984
0.065
0.065
0.065
0.065
0.065
11.149
11.656
12.164
13.179
14.194
0.002
0.002
0.002
0.002
0.002
11.262
11.762
12.262
13.262
14.262
0.002
0.002
0.002
0.002
0.002
11.288
11.795
12.303
13.318
14.333
0.002
0.002
0.002
0.002
0.002
-281
-282
-283
-284
0.139
0.139
0.139
0.139
0.004
0.004
0.004
0.004
14.984
15.955
16.955
17.955
0.065
0.075
0.080
0.085
15.209
16.194
17.209
18.224
0.002
0.002
0.002
0.002
15.262
16.233
17.233
18.233
0.002
0.002
0.002
0.002
15.348
16.333
17.348
18.363
0.002
0.002
0.002
0.002

Dimensions in inches

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-309
-310
0.210
0.210
0.005
0.005
0.412
0.475
0.005
0.005
0.417
0.480
0.004
0.004
0.832
0.895
0.004
0.004
0.631
0.696
0.004
0.004
-311
-312
-313
-314
-315
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
0.537
0.600
0.662
0.725
0.787
0.007
0.009
0.009
0.010
0.010
0.544
0.609
0.671
0.735
0.797
0.004
0.004
0.004
0.004
0.004
0.957
1.020
1.082
1.145
1.207
0.004
0.004
0.004
0.004
0.004
0.758
0.823
0.885
0.949
1.013
0.004
0.004
0.004
0.004
0.004
-316
-317
-318
-319
-320
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
0.850
0.912
0.975
1.037
1.100
0.010
0.010
0.010
0.010
0.012
0.861
0.924
0.990
1.053
1.117
0.004
0.004
0.004
0.004
0.004
1.270
1.332
1.395
1.457
1.520
0.004
0.004
0.004
0.004
0.004
1.077
1.141
1.205
1.267
1.333
0.004
0.004
0.004
0.004
0.004
-321
-322
-323
-324
-325
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
1.162
1.225
1.287
1.350
1.475
0.012
0.012
0.012
0.012
0.015
1.179
1.243
1.306
1.370
1.497
0.004
0.004
0.004
0.004
0.004
1.582
1.645
1.707
1.770
1.895
0.004
0.004
0.004
0.004
0.004
1.395
1.458
1.521
1.584
1.712
0.004
0.004
0.004
0.004
0.004
-326
-327
-328
-329
-330
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
1.600
1.725
1.850
1.975
2.100
0.015
0.015
0.015
0.018
0.018
1.624
1.751
1.878
2.005
2.132
0.004
0.004
0.004
0.004
0.004
2.020
2.145
2.270
2.395
2.520
0.004
0.004
0.004
0.004
0.004
1.838
1.963
2.090
2.217
2.343
0.004
0.004
0.004
0.004
0.004
-331
-332
-333
-334
-335
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
2.225
2.350
2.475
2.600
2.725
0.018
0.018
0.020
0.020
0.020
2.258
2.385
2.512
2.639
2.766
0.004
0.004
0.004
0.004
0.004
2.645
2.770
2.895
3.020
3.145
0.004
0.004
0.004
0.004
0.004
2.469
2.595
2.722
2.849
2.976
0.004
0.004
0.004
0.004
0.004
-336
-337
-338
-339
-340
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
2.850
2.975
3.100
3.225
3.350
0.020
0.024
0.024
0.024
0.024
2.893
3.020
3.147
3.273
3.400
0.004
0.004
0.004
0.004
0.004
3.270
3.395
3.520
3.645
3.770
0.004
0.004
0.004
0.004
0.004
3.103
3.230
3.357
3.483
3.610
0.004
0.004
0.004
0.004
0.004
-341
-342
-343
-344
-345
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
3.475
3.600
3.725
3.850
3.975
0.024
0.028
0.028
0.028
0.028
3.527
3.654
3.781
3.908
4.035
0.004
0.004
0.004
0.004
0.004
3.895
4.020
4.145
4.270
4.395
0.004
0.004
0.004
0.004
0.004
3.737
3.864
3.991
4.118
4.245
0.004
0.004
0.004
0.004
0.004
-346
-347
-348
-349
-350
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
4.100
4.225
4.350
4.475
4.600
0.028
0.030
0.030
0.030
0.030
4.162
4.288
4.415
4.542
4.669
0.004
0.004
0.004
0.004
0.004
4.520
4.645
4.770
4.895
5.020
0.004
0.004
0.004
0.004
0.004
4.372
4.497
4.625
4.752
4.879
0.004
0.004
0.004
0.004
0.004
-351
-352
-353
-354
-355
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
4.725
4.850
4.975
5.100
5.225
0.030
0.030
0.037
0.037
0.037
4.796
4.923
5.050
5.177
5.303
0.004
0.004
0.004
0.004
0.004
5.145
5.270
5.395
5.520
5.645
0.004
0.004
0.004
0.004
0.004
5.006
5.133
5.260
5.387
5.513
0.004
0.004
0.004
0.004
0.004
-356
-357
-358
-359
-360
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
5.350
5.475
5.600
5.725
5.850
0.037
0.037
0.037
0.037
0.037
5.430
5.557
5.684
5.811
5.938
0.004
0.004
0.004
0.004
0.004
5.770
5.895
6.020
6.145
6.270
0.004
0.004
0.004
0.004
0.004
5.640
5.767
5.894
6.021
6.148
0.004
0.004
0.004
0.004
0.004
-361
-362
-363
-364
-365
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
5.975
6.225
6.475
6.725
6.975
0.037
0.040
0.040
0.040
0.040
6.065
6.318
6.572
6.826
7.080
0.004
0.004
0.004
0.004
0.004
6.395
6.645
6.895
7.145
7.395
0.004
0.004
0.004
0.004
0.004
6.275
6.528
6.782
7.036
7.290
0.004
0.004
0.004
0.004
0.004
-366
-367
-368
-369
-370
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
7.225
7.475
7.725
7.975
8.225
0.045
0.045
0.045
0.045
0.050
7.333
7.587
7.841
8.095
8.348
0.004
0.004
0.004
0.004
0.004
7.645
7.895
8.145
8.395
8.645
0.004
0.004
0.004
0.004
0.004
7.543
7.797
8.051
8.305
8.558
0.004
0.004
0.004
0.004
0.004
-371
-372
-373
-374
-375
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
8.475
8.725
8.975
9.225
9.475
0.050
0.050
0.050
0.055
0.055
8.602
8.856
9.110
9.363
9.617
0.004
0.004
0.004
0.004
0.004
8.895
9.145
9.395
9.645
9.895
0.004
0.004
0.004
0.004
0.004
8.812
9.066
9.320
9.573
9.827
0.004
0.004
0.004
0.004
0.004
-376
-377
-378
-379
-380
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
9.725
9.975
10.475
10.975
11.475
0.055
0.055
0.060
0.060
0.065
9.871
10.125
10.632
11.140
11.647
0.004
0.004
0.004
0.004
0.004
10.145
10.395
10.895
11.395
11.895
0.004
0.004
0.004
0.004
0.004
10.081
10.335
10.842
11.350
11.857
0.004
0.004
0.004
0.004
0.004
-381
-382
-383
-384
-385
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
11.975
12.975
13.975
14.975
15.955
0.065
0.065
0.070
0.070
0.075
12.155
13.170
14.185
15.200
16.194
0.004
0.004
0.004
0.004
0.004
12.395
13.395
14.395
15.395
16.375
0.004
0.004
0.004
0.004
0.004
12.365
13.380
14.395
15.410
16.404
0.004
0.004
0.004
0.004
0.004
-386
-387
-388
-389
-390
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
16.955
17.955
18.955
19.955
20.955
0.080
0.085
0.090
0.095
0.095
17.209
18.224
19.239
20.254
21.269
0.004
0.004
0.004
0.004
0.004
17.375
18.375
19.375
20.375
21.375
0.004
0.004
0.004
0.004
0.004
17.419
18.434
19.449
20.464
21.479
0.004
0.004
0.004
0.004
0.004
-391
-392
-393
-394
-395
0.210
0.210
0.210
0.210
0.210
0.005
0.005
0.005
0.005
0.005
21.955
22.940
23.940
24.940
25.940
0.100
0.105
0.110
0.115
0.120
22.325
23.284
24.299
25.314
26.329
0.004
0.004
0.004
0.004
0.004
22.415
22.360
24.360
25.360
26.360
0.004
0.004
0.004
0.004
0.004
22.535
23.494
24.509
25.524
26.539
0.004
0.004
0.004
0.004
0.004

Dimensions in inches

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-425 0.275 0.006 4.475 0.033 4.542 0.004 5.025 0.004 4.817 0.004
-426
-427
-428
-429
-430
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
4.600
4.725
4.850
4.975
5.100
0.033
0.033
0.033
0.037
0.037
4.669
4.796
4.923
5.050
5.177
0.004
0.004
0.004
0.004
0.004
5.150
5.275
5.400
5.525
5.650
0.004
0.004
0.004
0.004
0.004
4.944
5.071
5.198
5.325
5.452
0.004
0.004
0.004
0.004
0.004
-431
-432
-433
-434
-435
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
5.225
5.350
5.475
5.600
5.725
0.037
0.037
0.037
0.037
0.037
5.303
5.430
5.557
5.684
5.811
0.004
0.004
0.004
0.004
0.004
5.775
5.900
6.025
6.150
6.275
0.004
0.004
0.004
0.004
0.004
5.578
5.705
5.832
5.959
6.086
0.004
0.004
0.004
0.004
0.004
-436
-437
-438
-439
-440
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
5.850
5.975
6.225
6.475
6.725
0.037
0.037
0.040
0.040
0.040
5.938
6.065
6.318
6.572
6.826
0.004
0.004
0.004
0.004
0.004
6.400
6.525
6.775
7.025
7.275
0.004
0.004
0.004
0.004
0.004
6.213
6.340
6.593
6.847
7.101
0.004
0.004
0.004
0.004
0.004
-441
-442
-443
-444
-445
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
6.975
7.225
7.475
7.725
7.975
0.040
0.045
0.045
0.045
0.045
7.080
7.333
7.587
7.841
8.095
0.004
0.004
0.004
0.004
0.004
7.525
7.775
8.025
8.275
8.525
0.004
0.004
0.004
0.004
0.004
7.355
7.608
7.862
8.116
8.370
0.004
0.004
0.004
0.004
0.004
-446
-447
-448
-449
-450
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
8.475
8.975
9.475
9.975
10.475
0.055
0.055
0.055
0.055
0.060
8.602
9.110
9.617
10.125
10.632
0.004
0.004
0.004
0.004
0.004
9.025
9.525
10.025
10.525
11.025
0.004
0.004
0.004
0.004
0.004
8.877
9.385
9.892
10.400
10.907
0.004
0.004
0.004
0.004
0.004
-451
-452
-453
-454
-455
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
10.975
11.475
11.975
12.475
12.975
0.060
0.060
0.060
0.060
0.060
11.140
11.647
12.155
12.662
13.170
0.004
0.004
0.004
0.004
0.004
11.525
12.025
12.525
13.025
13.525
0.004
0.004
0.004
0.004
0.004
11.415
11.922
12.430
12.937
13.445
0.004
0.004
0.004
0.004
0.004
-456
-457
-458
-459
-460
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
13.475
13.975
14.475
14.975
15.475
0.070
0.070
0.070
0.070
0.070
13.677
14.185
14.692
15.200
15.707
0.004
0.004
0.004
0.004
0.004
14.025
14.525
15.025
15.525
16.025
0.004
0.004
0.004
0.004
0.004
13.952
14.460
14.967
15.475
15.982
0.004
0.004
0.004
0.004
0.004
-461
-462
-463
-464
-465
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
15.955
16.455
16.955
17.455
17.955
0.075
0.075
0.080
0.085
0.085
16.194
16.702
17.209
17.717
18.224
0.004
0.004
0.004
0.004
0.004
16.505
17.005
17.505
18.005
18.505
0.004
0.004
0.004
0.004
0.004
16.469
16.977
17.484
17.992
18.499
0.004
0.004
0.004
0.004
0.004
-466
-467
-468
-469
-470
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
18.455
18.955
19.455
19.955
20.955
0.085
0.090
0.090
0.095
0.095
18.732
19.239
19.747
20.254
21.269
0.004
0.004
0.004
0.004
0.004
19.005
19.505
20.005
20.505
21.505
0.004
0.004
0.004
0.004
0.004
19.007
19.514
20.022
20.529
21.544
0.004
0.004
0.004
0.004
0.004
-471
-472
-473
-474
-475
0.275
0.275
0.275
0.275
0.275
0.006
0.006
0.006
0.006
0.006
21.955
22.940
23.940
24.940
25.940
0.100
0.105
0.110
0.115
0.120
22.284
23.284
24.299
25.314
26.329
0.004
0.004
0.004
0.004
0.004
22.505
23.490
24.490
25.490
26.490
0.004
0.004
0.004
0.004
0.004
22.559
23.559
24.574
25.589
26.604
0.004
0.004
0.004
0.004
0.004

Dimensions in inches

A
Dash
Size
B
O-ring
Cross-Section
C
O-Ring
Diameter
D
Int. Vacuum
Gland I.D.
E
Int. Pressure
Gland O.D.
F
Dovetail Gland
CL Diameter
  Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/- Nom Tol +/-
-901
-902
-903
-904
-905
0.056
0.064
0.064
0.072
0.072
0.003
0.003
0.003
0.003
0.003
0.185
0.239
0.301
0.351
0.414
0.005
0.005
0.005
0.005
0.005
0.190
0.244
0.306
0.356
0.419
0.002
0.002
0.002
0.002
0.002
0.297
0.367
0.429
0.495
0.558
0.002
0.002
0.002
0.002
0.002
0.248
0.310
0.372
0.430
0.493
0.002
0.002
0.002
0.002
0.002
-906
-907
-908
-909
-910
0.078
0.082
0.087
0.097
0.097
0.003
0.003
0.003
0.003
0.003
0.468
0.530
0.644
0.706
0.755
0.005
0.007
0.009
0.009
0.009
0.473
0.537
0.653
0.715
0.764
0.002
0.002
0.002
0.002
0.002
0.624
0.694
0.818
0.900
0.949
0.002
0.002
0.002
0.002
0.002
0.555
0.621
0.742
0.815
0.866
0.002
0.002
0.002
0.002
0.002
-911
-912
-913
-914
0.116
0.116
0.116
0.116
0.004
0.004
0.004
0.004
0.863
0.924
0.986
1.047
0.009
0.009
0.010
0.010
0.876
0.938
1.001
1.063
0.002
0.002
0.002
0.002
1.095
1.156
1.218
1.279
0.002
0.002
0.002
0.002
0.996
1.057
1.120
1.181
0.002
0.002
0.002
0.002

 

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Seabrook, NH 03874

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