Basic Temperature Ranges
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As always these
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Basic Temperature Ranges |
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Basic O-Ring Material Reference Guide
Material |
Recomended Use |
Uses Not Recomended |
Mechanical Properties |
| Buna-N (Nitrile) Standard: 70 Durometer Black Temperature Range: -35ºF to 250ºF Least Expensive / Readily Available |
Silicone Greases / Oils Water Petroleum Oils / Fuels Ethylene Glycol Fluids |
Keytones (MEK) Halogenated Hydrocarbons Auto / Aircraft Brake Fluids Strong Acids Sunlight, Ozone, Weathering |
Good Wear Resistance Good Compression Set Resistance Good Short-Term Resilience Good Permeation Resistance |
| Viton® (Fluorocarbon
Type A)
Standard: 75 Durometer Black |
Vacuum Most Acids / Chemicals Halogenated Hydrocarbons Di-Ester Lubricants Petroleum Oils / Fuels Silicone Oils / Greases |
Keytones (MEK) Auto / Aircraft Brake Fluids Amines (Ammonia) Acetone, Skydrol, Ethyl Accetate Hot Water and Steam Low Molecular Esters and Ethers |
Good Wear Resistance Excellent Comp. Set Resistance Moderate Short-Term Resilience Excellent Permeation Resistance |
| Silicone
Standard: 70
Durometer Orange |
Dry Heat Wide Temperature Range Sunlight, Ozone, Weathering Odorless and Non-Toxic |
Keytones (MEK) Acids Silicone Oils Brake Fluids |
Poor Wear Resistance Excellent Comp. Set Resistance Poor Short-Term Resilience Excellent Permeation Resistance |
| EPDM (Ethylene
Propylene)
Standard: 70 Durometer Black |
Sunlight, Ozone, Weathering Hot Water and Steam Auto / Aircraft Brake Fluids Some Acids ans Bases Keytones ans Alcohols Plumbing |
Petroleum Oils Fuels |
Good Wear Resistance Good Comp. Set Resistance Moderate Short-Term Resilience Good Permeation Resistance |
| Material | Recomended Use | Uses Not Recomended |
Mechanical Properties |
Chemraz® / Kalrez® / Simriz® Various Compounds |
High Temperature Resistance Excellent Chemical Resistance Low Out Gassing Chlorine Wet/Dry Petroleum Oil Chlorinated Hydrocarbons |
Molten metals Gaseous Alkali Metals Halogenated Freons/Fluids Uranium Hexafluoride |
Good Wear Resistance Good Comp. Set Resistance Moderate Short-Term Resilience Good Permeation Resistance |
| Neoprene® (Chloroprene)
Standard:
70 Durometer Black |
Refrigerants (Freon) Ammonia Some Petrolium Oils Dilute Acids Silicone ester Lubricants |
Keytones (MEK) Gasoline Auto / Aircraft Brake Fluids |
Good Wear Resistance Moderate Comp. Set Resistance Moderate Short-Term Resilience Good Permeation Resistance |
| Urethane
Standard: 90
Durometer Translucent |
Drive Belts Some Petroleum Oils Some Hydrocarbon Fuels Oxygen / Ozone |
Keytones (MEK) Acids Auto / Aircraft Brake Fluids Chlorinated Hydrocarbons Water |
Excelent Wear Resistance Poor Comp. Set Resistance Excelent Short-Term Resilience |
| Fluorosilicone
Standard:
70 Durometer Blue |
Jet Fuel Dry Heat Wide Temperature Range Some Petroleum Oils Clorinated Solvents |
Keytones (MEK) Phosphate Esters Some Acids Auto / Aircraft Brake Fluids Amines (Ammonia) |
Poor Wear Resistance ModerateComp. Set Resistance Moderate Short-Term Resilience Poor Permeation Resistance |
| Teflon®
Standard:
Non-Elastic White |
Chemical Resistance Fuel Resistance Low Coefficient of Friction |
Non-Elastic | Good Wear Resistance Low Coefficient of Friction |
| Material | Recomended Use | Uses Not Recomended |
Mechanical Properties |