O-Ring Material Quick Reference Guide - Rubber Sealing Materials

O-ring material family chemical compatibility, temperature resistance, and other properties all factor in to o-ring material selection for an application. This popular o-ring material family comparison shows basic rubber material family properties and performance plastic properties. The guide includes generalized recommended o-ring mateiral uses and non-recommended uses with typical material mechanical properties. Specific material compound formulations can significantly alter the general performance properties.

O-ring Sizing Charts
Downloadable o-ring size lists including AS568 o-rings, common metric o-rings, JIS o-rings, and other o-ring standard size lists.

O-ring Groove Design Guides
O-ring groove dimension guidelines for standard o-ring grooves, metric o-ring grooves, JIS o-ring grooves, and other o-ring gland designs.

Marco O-Ring Compound List
O-ring material guide comparing some of Marco Rubber & Plastics's most popular rubber compounds and plastic compounds.

Arrow Icon Click a material family row for details and compoundsArrow Icon

Material Temperature Range Relative Price Recommended Uses Not Recommended For Common Industry Applications: Mechanical Properties

FFKM

(Perfluoroelastomer, Markez®, Chemraz® / Kalrez® / Simriz®)
Standard: 5°F to 550°F
Specialty: -50°F to 650°F
FFKM O-Ring Prices High Cost of Maintenence or Downtime
High Temperature Resistance
O-ring Chemical Resistance

Low Out Gassing
Chlorine Wet/Dry
Petroleum Oil
Chlorinated Hydrocarbons
Molten metals
Gaseous Alkali Metals
Halogenated Freons/Fluids
Uranium Hexafluoride

Oil and Gas Explosive Decompression Resistant O-rings (Norsok O-rings, NACE O-rings)
Life Science Industry Seals
Medical O-rings and Pharma Industry Seals (USP Class VI O-rings, ISO 10993 O-rings)
Food and Beverage Manufacturing O-rings (Food & Drug Administration O-rings)
Semicon O-rings (SEM O-rings, Ultra High Purity Seals, Low Outgassing Seals, Low Particulate O-rings)
Good Wear Resistance
Good Compression Set Resistance
Moderate Short-Term Resilience
Good Permeation Resistance

Buna-N

(Nitrile) Order O-rings Online
Standard: -35°F to 250°F
Specialty: -70°F to 275°F
Buna-N O-Ring Prices Silicone Greases / Oils
Water
Petroleum Oils / Fuels
Ethylene Glycol Fluids
Ketones (MEK)
Halogenated Hydrocarbons
Auto / Aircraft Brake Fluids
Strong Acids
Sunlight, Ozone,  Weathering
Oil and Gas Seals
Explosive Decompression Resistant O-rings (Norsok M-710 Seals, NACE TM0297 Seals)
Automotive Fuel and Oil Seals
Military Applications (MIL Spec Compliant Seals)
Good Wear Resistance
Good Compression Set Resistance
Good Short-Term Resilience
Good Permeation Resistance

Viton®

(Fluorocarbon Type A) Order O-rings Online
Standard: -15°F to 437°F
Specialty: -54°F to 437°F
Viton O-Ring Prices Vacuum
Most Acids / Chemicals
Halogenated Hydrocarbons
Di-Ester Lubricants
Petroleum Oils / Fuels
Silicone Oils / Greases
Ketones (MEK)
Auto / Aircraft Brake Fluids
Amines (Ammonia)
Acetone, Skydrol, Ethyl Acetate
Hot Water and Steam (except specialty grades)
Low Molecular Esters and Ethers
Chemical Processing Industry Seals (CPI Seals)
Aerospace Seals (SAE, AMS, MIL Compliant Seals)
Explosive Decompression (RGD) Resistant Oil and Gas Industry Seals (Norsok M-710 O-rings, NACE TM0297 O-rings)
Automotive Fuel O-rings and Oil Seals
Good Wear Resistance
Excellent Compression Set Resistance
Moderate Short-Term Resilience
Excellent Permeation Resistance

Silicone

Order O-rings Online
Standard: -65°F to 400°F
Specialty: -100°F to 500°F
Silicone O-Ring Prices Dry Heat
Wide Temperature Range
Sunlight, Ozone,  Weathering
Odorless and Non-Toxic
Ketones (MEK)
Acids
Silicone Oils
Brake Fluids
Life Science Industry Seals
Drug and Pharma Industry Seals (USP Class VI O-rings, ISO 10993 O-rings)
Medical Tubing and Seals (USP Class VI Tubing, ISO 10993 Tubing)
Food and Beverage Contact Seals (FDA O-rings, NSF-51 O-rings, 3-A Sanitary O-rings)
Drinking Water Seals (NSF-61 O-rings, WRAS O-rings, KTW O-rings)
Semiconductor Equipment Seals and Wafer Manufacturing (Ultra High Purity O-rings, Low Outgassing O-rings)
Poor Wear Resistance
Excellent Compression Set Resistance
Poor Short-Term Resilience
Excellent Permeation Resistance

EPDM

(Ethylene Propylene)
Standard: -65°F to 300°F
Specialty: -65°F to 300°F
EPDM O-Ring Prices Sunlight, Ozone,  Weathering
Hot Water and Steam
Auto / Aircraft Brake Fluids
Some Acids and Bases
Ketones and Alcohols
Plumbing
Petroleum Oils
Fuels
Life Science Industry O-rings
Pharma and Medical Grade O-rings (USP Class VI Seals, ISO 10993 Seals)
Food Grade O-rings (FDA Rubber Sheet, NSF-51 Seals, 3-A Sanitary Rubber)
Drinking Water O-rings (NSF-61 Compliant Gaskets, WRAS Compliant Gaskets, KTW Compliant Gaskets)
Good Wear Resistance
Good Compression Set Resistance
Moderate Short-Term Resilience
Good Permeation Resistance
Material Temperature Range Relative Price Recommended Uses Not Recommended For Common Industry Applications: Mechanical Properties

Aflas®

(TFE/P)

Standard: 32°F to 450°F
Specialty: -15°F to 450°F
Aflas O-Ring Prices Vacuum
Most Acids / Solvents
Halogenated Hydrocarbons
Di-Ester Lubricants
Petroleum Oils / Fuels
Amines (Ammonia)
Bases
Steam
Ketones (MEK)
Auto / Aircraft Brake Fluids
Acetone, Skydrol, Ethyl Acetate
Low Molecular Esters and Ethers
Chemical Processing Industry O-rings (CPI O-rings)
Oil and Gas Drilling O-rings (ED Resistant O-rings, Norsok M-710 Seals, NACE TM0297 Seals)
Automotive O-rings and Oil Seals
Good Wear Resistance
Moderate Compression Set Resistance
Moderate Short-Term Resilience
Excellent Permeation Resistance

Neoprene®

(Chloroprene)
Standard: -35°F to 250°F
Specialty: -67°F to 250°F
Neoprene O-Ring Prices Refrigerants (Freon)
Ammonia
Some Petroleum Oils
Dilute Acids
Silicone ester Lubricants
Ketones (MEK)
Gasoline
Auto / Aircraft Brake Fluids
Refrigerant System Seals (Freon O-ring Compatibility, R22 Refrigerant, R134 Refrigerant, R410A Refrigerant, Ammonia O-rings)
Good Wear Resistance
Moderate Compression Set Resistance
Moderate Short-Term Resilience
Good Permeation Resistance

Polyurethane

Standard: -30°F to 180°F
Specialty: -65°F to 250°F
Polyurethane O-Ring Prices Drive Belts
Some Petroleum Oils
Some Hydrocarbon Fuels
Oxygen / Ozone
Ketones (MEK)
Acids
Auto / Aircraft Brake Fluids
Chlorinated Hydrocarbons
Water
Mechanical Seals and Assemblies
Fluid Transfer System Seals
Hydraulic System Seals and Assemblies
Excellent Wear Resistance
Poor Compression Set Resistance
Excellent Short-Term Resilience

Fluorosilicone

Standard: -80°F to 350°F
Specialty: -100°F to 350°F
Fluorosilicone O-Ring Prices Jet Fuel
Dry Heat
Wide Temperature Range
Some Petroleum Oils
Chlorinated Solvents
Ketones (MEK)
Phosphate Esters
Some Acids
Auto / Aircraft Brake Fluids
Amines (Ammonia)
Aerospace O-rings and Aerospace Rubber Sheets (SAE Compliant O-rings, AMS O-rings, MIL O-rings)
Automotive Compliant O-rings and Gaskets
Chemical Processing O-rings (CPI Gaskets)
Poor Wear Resistance
Moderate Compression Set Resistance
Moderate Short-Term Resilience
Poor Permeation Resistance

Teflon® Encapsulated

Varies with O-ring Energizer Material Teflon Encapsulated O-Ring Prices Chemical Resistance
Heat Resistance
High Pressure Seals
Hardware Requiring a Stretch Fit
Fitting Over Sharp Edges or Burrs
Chemical Processing O-rings (CPI Seals)
Chemical Handling O-rings
Chemical Storage O-rings
Good Wear Resistance
Good  Short-Term Resilience
Good Permeation Resistance

Teflon®

Standard: -250°F to 450°F
Specialty: -300°F to 500°F
Teflon O-Ring Prices O-ring Chemical Compatibility
Fuel Resistance
Low Coefficient of Friction
Hardware Requiring a Stretch Fit
Fitting Over Sharp Edges or Burrs
Chemical Processing Gaskets (CPI Seals)
Chemical Handling Gaskets
Chemical Storage Gaskets
Good Wear Resistance
Low Coefficient of Friction
Material Temperature Range Relative Price Recommended Uses Not Recommended For Common Industry Applications: Mechanical Properties

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

Contact
Home