Popular O-Ring Material Comparison Guide

Fluid Compatibility Guide
A detailed list of fluids/chemicals with their compatibility ratings for use with the most common O-Ring materials.

Quick Reference Material Guide
A list of popular materials with typical recommended and non-recommended uses with typical mechanical properties.


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
FFKM FFKM Page FFKM, Kalrez®, Markez®, Chemraz®, Simriz®, Perlast®, Parfluor®, FFKM, Perfluoroelastomer  Many  Many  Varies 625  -40  2 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 View Datasheet BUNA-N (NBR) NITRILE  Black  70  Very High 250 -30 2 2
  Lowest cost highest inventory general purpose commodity NBR compound  (available in nearly any color and durometer)
B1001 View Datasheet BUNA-N (NBR) NITRILE  Black  90  High 250 -30 2 2 2
  General purpose NBR, higher pressure applications
B1002 View Datasheet BUNA-N (NBR) NITRILE  Black  70  Med 250 -30 2 2
  FDA Compliant NBR per 21 CFR 177.2600 for food contact and some medical uses
B1006 View Datasheet BUNA-N (NBR) NITRILE  Black  50  Med 250 -30 2 2
  General purpose softer than standard NBR to help seal rough or warped glands and or lower closure force applications
B1083 View Datasheet BUNA-N (NBR) NITRILE  Black  70  Med 275 -65  2 2
  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
B1105View Datasheet BUNA-N (NBR) NITRILE  Black  70  Low 250 -30 3 2 2 2
  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 View Datasheet BUNA-N (NBR) NITRILE  Black  70  Med 275 -65  2 1
  Military Specification Mil-Spec AMS-P-25732 , formerly MS28775-### per Mil-P-25732C-(1)
M1001 View Datasheet BUNA-N (NBR) NITRILE  Black  75 High 275 -65  2 1
  Military Specification Mil-Spec AMS-P-83461 Formerly M83461/1-### per MIL-P-83461B#3, improved low temp and hydraulic fluid resistance
R1001 View Datasheet HNBR Hydrogenated Nitrile  Black  70  Med 325 -30 2 2 2 1
  General purpose HNBR higher and lower temperature resistance and improved chemical and Freon resistace than tradtional NBR, compatible with most flex fuels
R1008View Datasheet HNBR Hydrogenated Nitrile  Black  90
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.
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 Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
V1000 View Datasheet FKM Viton® (A) Fluorocarbon  Black  75  Very High 400  -15 3 1
  Lowest cost highest inventory general purpose commodity FKM  (available in nearly any color and durometer)
V1002 View Datasheet FKM Viton® (A) Fluorocarbon  Black  75  High 400  -15 2 1
  Military Specification Mil-Spec AMS-R-83248 M83248/1-### per Mil-R-83248 TY-1 CL-1
V1003 View Datasheet FKM Viton® (A) Fluorocarbon  Brown  75  High 400  -15 3 1
General purpose brown color FKM to diferentiate from standard black FKM, improved oxidation resistance
V1007 View Datasheet FKM Viton® (A) Fluorocarbon  Black  90  High 400  -15 3 1
General purpose higher durometer FKM for higher pressure applications
V1038 View Datasheet FKM (GLT) Fluorocarbon  Black  75  Low 400  -40 2 3
Lower temperature resistance and improved chemical resistance over standard A type FKM
V1118View Datasheet FKM Viton® (F) Fluorocarbon  White 70 Low 400  -15 3 1
Medical Grade USP Class VI compliant, commercial manufactured terpolymer FKM, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
V1020 View Datasheet FKM Viton® (ETP) Fluorocarbon  Black  75  Med 400  -15 3
Best FKM family chemical resistance, known as Viton® ETP, Viton® Extreme and Super Viton®, improved base, amines, ketones, MTBE, MEK, MIBK resistance
V1160View Datasheet FKM Viton® (GLT) Fluorocarbon  Black  90 Low 437 -50 2 1
High performance FKM with higher and lower temperature resistance and harder durometer explosive decompression resistance, Norsok and Nace tested for Oilfiled.
V1086 View Datasheet FKM  (LTFE) Fluorocarbon  Black  75  Low 400  -54  2 1
Lowest temperature resistant FKM with improved resistance to fuels over standard type A
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 Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
L1000 View Datasheet Aflas® (TFE/P)  Black  80  Med 450  15 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)
L1009View Datasheet Aflas® (TFE/P)  Black  90 Low 475 32 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 View Datasheet Fluorosilicone (FVMQ)  Blue  70  High 350  -80  3
Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/1-### per Mil-R-25988 CL-1 GR-70, jet fuel resistance
S1000 View Datasheet Silicone (VMQ)  Orange  70  Very High 400  -75 3
General purpose and FDA compliant Silicone per 21 CFR 177.2600   (available in nearly any color and durometer)
S1004 View Datasheet Silicone (VMQ)  Orange  40  Low 400  -75 3
General purpose softer than standard Silicone to seal rough or warped glands and or low closure force applications
S1015View Datasheet Silicone (VMQ)  Orange  70 Low 600 -65 3
Higher temperature resistant Silicone
S1043View Datasheet Silicone (VMQ)  Orange  50 Low 400  -103 3
Lower temperature resistant Silicone
S1020 View Datasheet Silicone (VMQ)  Clear  70  Low 400  -65  3
Clear-Translucent and FDA compliant Silicone per 21 CFR 177.2600
S1146View Datasheet Silicone (VMQ)  White 70 Low 480 -75 3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1083View Datasheet Silicone (VMQ)  Clear  70 Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1037View Datasheet Silicone (VMQ)  Clear  70 Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Clean Room Manufactured
S1081 View Datasheet Silicone (VMQ)  Orange  65  Low 350  -65  3
EMI RFI Shielding Nickel Coated Graphite filled Silicone, Volume Resistivity 0.10 ohm-cm
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 Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
E1000 View Datasheet EPDM (Peroxide) Black  70  Very High 300  -65  2
General purpose peroxide cured EPDM FDA compliant per 21 CFR 177.2600 and NSF61 for drinking water and food contact
E1005 View Datasheet EPDM (Sulfur) Black  70  Med 265  -65  2
General purpose sulfur cured EPDM with lowest cost at very high volumes
E1097 View Datasheet EPDM (Peroxide)  Black  70  Low 300  -65  2
Chloramine Resistant NSF61 for drinking water, food and dairy contact, peroxide cured EPDM FDA compliant per 21 CFR 177.2600, 3A USDA compliant
E1074View Datasheet EPDM (Peroxide) White 70  Low 300  -65  2
Medical Grade USP Class VI compliant EPDM, commercial manufactured, peroxide cured, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
N1000 View Datasheet Neoprene® (CR) Black  70  Med 250 -40  2 2
General purpose Neoprene®
P1000 View Datasheet PolyUrethane  Translucent  70  Med 250 -65  2 1
High performance 70 durometer Polyurethane
P1001 View Datasheet PolyUrethane  Translucent  90  Med 250 -65  2 1
High performance 90 durometer Polyurethane
P1004 View Datasheet PolyUrethane  Translucent  90  Med 180 -30 3 1
General purpose 90 durometer Polyurethane
P1006 View Datasheet PolyUrethane  Translucent  70  Med 180 -30 3 1
General purpose 70 durometer Polyurethane
T1000 View Datasheet PTFE Solid (Virgin) Teflon® White  N/A  Med 450  -250  1 1
General purpose PTFE extreme chemical resistant ridged plastic only seals in limited applications  (consider FFKM for critical leak resistant applications)
T1002View Datasheet FEP (Teflon®) Encapsulated Silicone  Orange Core  N/A  Med 400  -80  3
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 View Datasheet PFA (Teflon®) Encapsulated Stainless Steel Spring  Silver Core  N/A  Low 500  -400
High performance extreme chemical resistant FEP (Teflon®) cover with encapsulated Steel Spring core (cosider Spring Energized PTFE Seals for critical applications) 
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 Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor


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.    

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.