Extruded Rubber Tolerance Chart

Guide to Rubber Extrusion Tolerances for Precision and Quality Control

For outside diameters, inside diameters, wall, width, Height, and general cross-sectional dimensions of extrusions.
Tolerance levels typically impact cost due to increased processing and higher reject rates.

Rubber Extrusion Tolerances (Millimeters)

Cross Section
Commercial Grade Extrusion CS Tolerances RMA-E3 (Standard)
Precision Grade Extrusion CS Tolerances RMA-E2
High Precision Grade Extrusion CS Tolerances RMA-E1
0.00 to 1.49
+/- 0.40
+/- 0.25
+/- 0.15
1.50 to 2.49
+/- 0.50
+/- 0.35
+/- 0.20
2.50 to 3.99
+/- 0.70
+/- 0.40
+/- 0.25
4.00 to 6.29
+/- 0.80
+/- 0.50
+/- 0.35
6.30 to 9.99
+/- 1.00
+/- 0.70
+/- 0.40
10.00 to 15.99
+/- 1.30
+/- 0.80
+/- 0.50
16.00 to 24.99
+/- 1.60
+/- 1.00
+/- 0.70
25.00 to 39.99
+/- 2.00
+/- 1.30
+/- 0.80
40.00 to 62.99
+/- 2.50
+/- 1.60
+/- 1.00
63.00 to 100
+/- 3.20
+/- 2.00
+/- 1.30

Rubber Extrusion Tolerances (Inches)

Cross Section
Commercial Grade Extrusion CS Tolerances RMA-E3 (Standard)
Precision Grade Extrusion CS Tolerances RMA-E2
High Precision Grade Extrusion CS Tolerances RMA-E1
0.000 to 0.059
+/- 0.015
+/- 0.010
+/- 0.006
0.060 to 0.099
+/- 0.020
+/- 0.014
+/- 0.008
0.010 to 0.159
+/- 0.027
+/- 0.016
+/- 0.010
0.160 to 0.249
+/- 0.031
+/- 0.020
+/- 0.014
0.250 to 0.389
+/- 0.039
+/- 0.027
+/- 0.016
0.390 to 0.629
+/- 0.051
+/- 0.031
+/- 0.020
0.630 to 0.979
+/- 0.063
+/- 0.039
+/- 0.027
0.980 to 1.569
+/- 0.079
+/- 0.051
+/- 0.031
1.570 to 2.479
+/- 0.098
+/- 0.063
+/- 0.039
2.480 to 3.940
+/- 0.126
+/- 0.079
+/- 0.051

Note: Tolerance levels typically impact cost due to increased processing and higher reject rates.


Cut Length (Un-Spliced) Rubber Extrusion Tolerances (Millimeters)

Cut Length
Commercial Grade Extrusion Cut Length Tolerances RMA-E3 (Standard)
Precision Grade Extrusion Cut Length Tolerances RMA-E2
High Precision Grade Extrusion Cut Length Tolerances RMA-E1
0.00 to 1.56
+/- 0.06
+/- 0.04
+/- 0.03
1.57 to 2.47
+/- 0.08
+/- 0.05
+/- 0.03
2.48 to 3.93
+/- 0.10
+/- 0.06
+/- 0.04
3.94 to 6.29
+/- 0.13
+/- 0.08
+/- 0.05
6.30 to 9.83
+/- 0.16
+/- 0.10
+/- 0.06
9.84 to 15.74
+/- 0.20
+/- 0.13
+/- 0.08
15.75 to 24.79
+/- 0.25
+/- 0.16
+/- 0.10
24.75 to 39.36
+/- 0.39
+/- 0.20
+/- 0.13
39.37 to 62.98
+/- 0.49
+/- 0.25
+/- 0.16
62.99 to 98.42
+/- 0.63
+/- 0.39
+/- 0.20
98.43 to 157.47
+/- 0.79
+/- 0.49
+/- 0.25
157.48+
+/- 0.16%
+/- 0.32%
+/- 0.50%

Cut Length (Un-Spliced) Rubber Extrusion Tolerances (Inches)

Cut Length
Commercial Grade Extrusion Cut Length Tolerances RMA-E3 (Standard)
Precision Grade Extrusion Cut Length Tolerances RMA-E2
High Precision Grade Extrusion Cut Length Tolerances RMA-E1
0 to 39
+/- 1.6
+/- 1.0
+/- 0.7
40 to 62
+/- 2.0
+/- 1.3
+/- 0.8
63.0 to 99
+/- 2.5
+/- 1.6
+/- 1.0
100 to 159
+/- 3.2
+/- 2.0
+/- 1.3
160 to 249
+/- 4.0
+/- 2.5
+/- 1.6
250 to 399
+/- 5.0
+/- 3.2
+/- 2.0
400 to 629
+/- 6.3
+/- 4.0
+/- 2.5
630 to 999
+/- 10.0
+/- 5.0
+/- 3.2
1000 to 1599
+/- 12.5
+/- 6.3
+/- 4.0
1600 to 2499
+/- 16.0
+/- 10.0
+/- 5.0
2500 to 3999
+/- 20.0
+/- 12.5
+/- 6.3
4000+
+/- 0.16%
+/- 0.32%
+/- 0.50%