Popular O-Ring Material Selection Comparison Guide

Don't see what you need? Please contact an application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.

Marco CPD#
Base Material
Color
Duro (Shore A)
Relative Price
Typical Inventory Level
High Temp (F)
Low Temp (F)
Steam < 300 F
Steam < 400 F
Compression Set
Chemical & Solvents
Sunlight, Ozone, UV
Wear Abrasion
Permeation Vacuum
Petroleum Oils &
Hydraulics
Fuels & Gas
Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
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FFKM FFKM, Kalrez®, Markez®, Chemraz®, Simriz®, Perlast®, Parfluor®, FFKM, Perfluoroelastomer Many Many O-ring Material Price 6 Varies 625 -40 1 2 2 1 1 2 2 1 1 3
High performance mateiral for ultimate chemical and temperature resistance. Kalrez®, Markez, Chemraz®, Simriz®, Perlast®, Parfluor® FFKM Perfluoroelastomer compounds available, or contact us with specific requirements.
B1000 BUNA-N (NBR) Nitrile Black 70 O-ring Material Price 1 Very High 250 -30 4 4 2 4 4 2 2 1 2 4
Lowest cost highest inventory general purpose commodity NBR compound(available in nearly any color and durometer)
B1001 BUNA-N (NBR) Nitrile Black 90 O-ring Material Price 2 High 250 -30 4 4 2 4 4 2 2 2 2 4
General purpose NBR, higher pressure applications
B1002 BUNA-N (NBR) Nitrile Black 70 O-ring Material Price 2 Med 250 -30 4 4 2 4 4 2 2 2 2 4
FDA Compliant NBR per 21 CFR 177.2600 for food contact and some medical uses
B1006 BUNA-N (NBR) Nitrile Black 50 O-ring Material Price 2 Med 250 -30 4 4 3 4 4 2 2 2 2 4
General purpose softer than standard NBR to help seal rough or warped glands and or lower closure force applications
B1083 BUNA-N (NBR) Nitrile Black 70 O-ring Material Price 2 Med 275 -65 4 4 2 4 4 2 2 1 2 4
Higher performance NBR , Improved lower and higher temperature resistance and oil resistance at higher temperature than standard NBR.  Similar to Parker N0794-75 and M83461
B1105 BUNA-N (NBR) Nitrile Black 70 O-ring Material Price 4 Low 250 -30 4 4 3 4 4 2 2 2 2 4
Metal detectable NBR for contamination detection sensors, FDA Compliant per 21 CFR 177.2600 for food contact and some Life Sci uses (additional colors available)
M1000 BUNA-N (NBR) Nitrile Black 70 O-ring Material Price 3 Med 275 -65 4 4 2 4 4 2 2 1 1 4
Military Specification Mil-Spec AMS-P-25732 , formerly MS28775-### per Mil-P-25732C-(1)
M1001 BUNA-N (NBR) Nitrile Black 75 O-ring Material Price 3 High 275 -65 4 4 2 4 4 2 2 1 1 4
Military Specification Mil-Spec AMS-P-83461 F ormerly M83461/1-### per MIL-P-83461B#3, improved low temp and hydraulic fluid resistance
R1001 HNBR Hydrogenated Nitrile Black 70 O-ring Material Price 3 Med 325 -30 2 4 2 3 2 2 2 1 1 4
General purpose HNBR higher and lower temperature resistance and improved chemical and Freon resistace than tradtional NBR, compatible with most flex fuels
R1008 HNBR Hydrogenated Nitrile Black 90
O-ring Material Price 4
Low
350 -12 2 4 2 2 2 2 2 1 1 4
Improved explosive decompression resistance HNBR for higher pressure applications in the Oilfield Industry, Norsok M-710 Compliant.
V1000 FKM Viton® (A) Fluorocarbon Black 75 O-ring Material Price 4 Very High 437 -15 3 4 1 2 1 2 2 1 1 4
Lowest cost highest inventory general purpose commodity FKM (available in nearly any color and durometer)
V1002 FKM Viton® (A) Fluorocarbon Black 75 O-ring Material Price 5 High 437 -15 2 4 1 2 1 2 2 1 1 4
Military Specification Mil-Spec AMS-R-83248 M83248/1-### per Mil-R-83248 TY-1 CL-1
V1003 FKM Viton® (A) Fluorocarbon Brown 75 O-ring Material Price 5 High 437 -15 3 4 1 2 1 2 2 1 1 4
General purpose brown color FKM to diferentiate from standard black FKM, improved oxidation resistance
V1007 FKM Viton® (A) Fluorocarbon Black 90 O-ring Material Price 5 High 437 -15 3 4 2 2 1 2 2 1 1 4
General purpose higher durometer FKM for higher pressure applications
V1038 FKM Viton® (GLT) Fluorocarbon Black 75 O-ring Material Price 5 Low 437 -40 2 3 1 2 1 2 2 2 1 4
Lower temperature resistance and improved chemical resistance over standard A type FKM
V1118 FKM Viton® (F) Fluorocarbon White 70 O-ring Material Price 5 Low 437 -15 3 4 2 2 1 2 2 1 1 4
Medical Grade USP Class VI compliant, commercial manufactured terpolymer FKM, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
V1020 FKM Viton® (ETP) Fluorocarbon Black 75 O-ring Material Price 6 Med 437 -6 2 3 1 1 1 2 2 1 1 3
Best FKM family chemical resistance , known as Viton® ETP, Viton® Extreme and Super Viton®, improved base, amines, ketones, MTBE, MEK, MIBK resistance
V1090 FKM Viton® (GLT) Fluorocarbon Black 90 O-ring Material Price 6 Low 437 -40 2 4 2 2 1 2 2 1 1 4
High performance FKM with higher and lower temperature resistance and harder durometer explosive decompression resistance, Norsok and Nace tested for Oilfiled.
V1086 FKM Viton® (LTFE) Fluorocarbon Black 75 O-ring Material Price 5 Low 437 -54 2 4 1 2 1 2 2 1 1 4
Lowest temperature resistant FKM with improved resistance to fuels over standard type A
L1000 Aflas® (TFE/P) Black 80 O-ring Material Price 5 Med 450 15 1 2 2 2 1 2 2 2 2 2
General purpose Aflas ®, steam resistant, sour gas resistant, acid resistance, for chemical and oil industries  (higher performance Alfas® versions avaialble for oil drilling environmnets)
L1009 Aflas® (TFE/P) Black 90 O-ring Material Price 6 Low 475 32 1 2 2 2 1 2 2 2 2 2
Higher performance and higher durometer Aflas®, improved explosive decompression resistance, steam resistance, sour gas resistance, acid resistance, tested to Norsok M-710 for oilfield
F1001 Fluorosilicone (FVMQ, FSIL) Blue 70 O-ring Material Price 5 High 350 -80 4 4 2 3 1 4 3 3 1 4
Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/1-### per Mil-R-25988 CL-1 GR-70, jet fuel resistance
S1000 Silicone (VMQ, SIL) Orange 70 O-ring Material Price 53 Very High 400 -75 3 4 2 4 1 4 3 4 4 4
General purpose and FDA compliant Silicone per 21 CFR 177.2600   (available in nearly any color and durometer)
S1004 Silicone (VMQ, SIL) Orange 40 O-ring Material Price 4 Low 400 -75 3 4 3 4 1 4 3 4 4 4
General purpose softer than standard Silicone to seal rough or warped glands and or low closure force applications
S1015 Silicone (VMQ, SIL) Orange 70 O-ring Material Price 4 Low 500 -65 3 4 2 4 1 4 3 4 4 4
Higher temperature resistant Silicone
S1043 Silicone (VMQ, SIL) Orange 50 O-ring Material Price 4 Low 400 -103 3 4 2 4 1 4 3 4 4 4
Lower temperature resistant Silicone
S1020 Silicone (VMQ, SIL) Clear 70 O-ring Material Price 4 Low 400 -65 3 4 2 4 1 4 3 4 4 4
Clear-Translucent and FDA compliant Silicone per 21 CFR 177.2600
S1146 Silicone (VMQ, SIL) White 70 O-ring Material Price 4 Low 480 -75 3 4 2 4 1 4 3 4 4 4
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1083 Silicone (VMQ, SIL) Clear 70 O-ring Material Price 4 Low 400 -65 3 4 2 4 1 4 3 4 4 4
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1037 Silicone (VMQ, SIL) Clear 70 O-ring Material Price 5 Low 400 -65 3 4 2 4 1 4 3 4 4 4
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Clean Room Manufactured
S1081 Silicone (VMQ, SIL) Orange 65 O-ring Material Price 6 Low 350 -65 4 4 4 4 1 4 3 4 4 4
EMI RFI Shielding Nickel Coated Graphite filled Silicone, Volume Resistivity 0.10 ohm-cm
E1000 EPDM (Peroxide Cure) Black 70 O-ring Material Price 2 Very High 300 -65 1 4 2 2 1 3 2 4 4 1
General purpose peroxide cured EPDM FDA compliant per 21 CFR 177.2600 and NSF61 for drinking water and food contact
E1005 EPDM (Sulfur Cure) Black 70 O-ring Material Price 2 Med 265 -65 2 4 2 2 1 3 2 4 4 3
General purpose sulfur cured EPDM with lowest cost at very high volumes
E1097 EPDM (Peroxide Cure) Black 70 O-ring Material Price 3 Low 300 -65 1 4 2 2 1 3 2 4 4 1
Chloramine Resistant NSF61 for drinking water, food and dairy contact, peroxide cured EPDM FDA compliant per 21 CFR 177.2600, 3A USDA compliant
E1074 EPDM (Peroxide Cure) White 70 O-ring Material Price 4 Low 300 -65 1 4 2 2 1 3 2 4 4 1
Medical Grade USP Class VI compliant EPDM, commercial manufactured, peroxide cured, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
N1000 Neoprene® (CR) Black 70 O-ring Material Price 2 Med 250 -40 4 4 2 4 2 2 2 2 4 3
General purpose Neoprene®
P1000 Polyurethane (PU, AU) Translucent 70 O-ring Material Price 5 Med 250 -65 4 4 2 3 1 1 1 3 3 4
High performance 70 durometer Polyurethane
P1001 Polyurethane (PU, AU) Translucent 90 O-ring Material Price 5 Med 250 -65 4 4 2 3 1 1 1 3 3 4
High performance 90 durometer Polyurethane
P1004 Polyurethane (PU, AU) Translucent 90 O-ring Material Price 3 Med 180 -30 4 4 3 4 1 2 1 4 4 4
General purpose 90 durometer Polyurethane
P1006 Polyurethane (PU, AU) Translucent 70 O-ring Material Price 3 Med 180 -30 4 4 3 4 1 2 1 4 4 4
General purpose 70 durometer Polyurethane
T1000 PTFE Solid (Virgin) Teflon® White N/A O-ring Material Price 6 Med 450 -250 3 4 4 1 1 3 1 1 1 1
General purpose PTFE extreme chemical resistant ridged plastic only seals in limited applications  (consider FFKM for critical leak resistant applications)
T1002 FEP (Teflon®) Encapsulated Silicone Orange Core N/A O-ring Material Price 5 Med 400 -80 3 4 3 1 1 3 2 3 1 1
General purpose extreme chemical resistant FEP (Teflon®) cover with encapsulated Silicone Solid core, can have leaking issues in some applications (consider FFKM for critical leak resistant applications)
T1021 PFA (Teflon®) Encapsulated Stainless Steel Spring Silver Core N/A O-ring Material Price 6 Low 500 -400 3 4 2 1 1 3 2 1 1 1
High performance extreme chemical resistant FEP (Teflon®) cover with encapsulated Steel Spring core (cosider Spring Energized PTFE Seals for critical applications)

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The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.


Selecting an O-Ring material for a specific application depends on many important criteria including:
Service Conditions (media to be sealed, temperature range, pressure/vacuum range, dynamic motion)
Design Attributes (component geometry, desired service life, installation considerations, tolerances)

This guide is intended for general reference use only.
The materials and compound numbers listed are the most commonly used.
There are numerous compound variations designed for specific applications.
For demanding applications, please provide all the details to our application engineers for a recommendation.


Don't see what you need?  Please contact an application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.

New Customer Hotline: 800-775-6525

Existing Customer Specialist: 800-775-6525 or repeat customers

Marco Rubber & Plastics
PO Box 1150
Seabrook, NH 03874

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