| Material |
Recomended Use |
Not
Recomended For |
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
Temperature Range: -15ºF to 400ºF
|
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
Temperature Range: -65ºF to 450ºF |
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
Temperature Range: -60ºF to 250ºF |
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 |
|
|
|
|
Chemraz® / Kalrez® / Simriz®
(Perfluoroelastomer)
Various Compounds
Designed for Specific Applications
Temperature Range: -10ºF to 615ºF |
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
Temperature Range: -35ºF to 250ºF |
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
Temperature Range: -65ºF to 200ºF |
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
Temperature Range: -80ºF to 450ºF |
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 |
|
|
|
|
| PTFE Encapsulated
O-Ring
Covered with PTFE Tube
Usually Silicone or Viton® |
Depends on O-Ring Core
Chemical Resistance
Heat Resistance |
Depends on O-Ring Core |
Good Wear Resistance
Good Short-Term Resilience
Good Permeation Resistance |
|
|
|
|
| PTFE
Standard:
Non-Elastic White
Temperature Range: -250ºF to 450ºF |
Chemical Resistance
Fuel Resistance
Low Coefficient of Friction |
Non-Elastic |
Good Wear Resistance
Low Coefficient of Friction |
