General Description |
Chemical Description |
Abbreviation (ASTM 1418) |
ISO/DIN 1629 |
Other Trade names & Abbreviations |
ASTM D2000 Designations |
Nitrile | Acrylonitrile-butadiene rubber | NBR | NBR | Buna-N | BF, BG, BK, CH |
Hydrogenated Nitrile | Hydrogenated Acrylonitrile-butadiene rubber |
HNBR | (HNBR) | HNBR | DH |
Ethylene-Propylene | Ethylene propylene diene rubber | EPDM | EPDM | EP, EPT, EPR | BA, CA, DA |
Fluorocarbon | Fluorocarbon Rubber | FKM | FPM | Viton ®, Fluorel ® | HK |
Chloroprene | Chloroprene rubber | CR | CR | Neoprene | BC, BE |
Silicone | Silicone rubber | VMQ | VMQ | PVMQ | FC, FE, GE |
Fluorosilicone | Fluorosilicone rubber | FVMQ | FVMQ | FVMQ | FK |
Polyacrylate | Polyacrylate rubber | ACM | ACM | ACM | EH |
Ethylene Acrylic | Ethylene Acrylic rubber | AEM | AEM | Vamac ® | EE, EF, EG, EA |
Styrene-butadiene | Styrene-butadiene rubber | SBR | SBR | SBR | AA, BA |
Polyurethane | Polyester urethane / Polyether urethane | AU / EU | AU / EU | AU / EU | BG |
Natural rubber | Natural rubber | NR | NR | NR | AA |
Very Good |
Good |
Average |
Poor |
Not Recommended |
Basic Property |
NBR |
HNBR |
EPDM |
FKM |
CR |
ACM |
AEM |
SBR |
AU/EU |
VMQ |
FVMQ |
NR |
Economy of Material | ||||||||||||
Compression Set Resistance | ||||||||||||
Resilience (Rebound) | ||||||||||||
Tear Strength | ||||||||||||
Heat Aging Resistance | ||||||||||||
Ozone Resistance | ||||||||||||
Resistance to Oil & Grease | ||||||||||||
Fuel Resistance | ||||||||||||
Water Swell Resistance | ||||||||||||
Gas Impermeability | ||||||||||||
Dynamic Service / Abrasion Res. | ||||||||||||
High Temperature - Standard | 212 °F | 300 °F | 300 °F | 390 °F | 250 °F | 300 °F | 300 °F | 212 °F | 175 °F | 450 °F | 400 °F | 220 °F |
High Temperature - Special | 250 °F | - | - | - | - | - | - | - | - | 480 °F | - | - |
Low Temperature - Standard | -22 °F | - 22 °F | -60 °F | 5 °F | -40 °F | -60 °F | -40 °F | -50 °F | -60 °F | -75 °F | -75 °F | -60 °F |
Low Temperature - Special | -60 °F | -40 °F | - | -30 °F | - | - | - | - | - | - | - | - |
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Temperature Range (dry heat) |
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low |
high |
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-22 °F -30 °C |
212 °F 100 °C |
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Application Advantages |
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» excellent compression set, » superior tear resistance » abrasion resistance |
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Application Disadvantages |
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» poor weather resistance » moderate heat resistance |
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Modifications |
|||
» acrylonitrile content (ACN) from 18% to 50% » peroxide vs. sulfur donor cure system » XNBR improved wear resistance formulation |
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Primary Uses |
Specialized Applications |
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O-rings, rubber seals and custom molded rubber components for: » Oil resistant applications » Low temperature applications » Fuel systems, automotive, marine, and aircraft » General Industrial Use |
» NBR NSF standard 61 for potable water applications » NBR WRc, KTW water applications » NBR FDA white list compounds |
|
Temperature Range (dry heat) |
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low |
high |
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-22 °F -30 °C |
300 °F 149 °C |
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Application Advantages |
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» excellent heat and oil resistance » improved fuel and ozone resistance (approximately 5X) over Nitrile » abrasion resistance |
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Application Disadvantages |
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» increased cold flow with hydrogenation » decreased elasticity at low temperatures with hydrogenation over standard nitrile |
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Primary Uses |
Modifications |
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O-rings, rubber seals and custom molded rubber components for: » Oil resistant applications » Oil well applications » Fuel systems, automotive, marine, and aircraft » General Industrial Use |
» acrylonitrile content (ACN) from 18% to 50% » peroxide vs. sulfur donor cure system |
|
Temperature Range (dry heat) |
||
low |
high |
||
-60 °F -51 °C |
300 °F 149 °C |
||
Application Advantages |
|||
» excellent weather resistance » good low temperature flexibility » excellent chemical resistance » good heat resistance |
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Application Disadvantages |
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» poor petroleum oil and solvent resistance |
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Modifications |
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» sulfur-cured and peroxide-cured compounds » third comonomer EPDM, copolymer ethylene and propylene EPM |
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Primary Uses |
Specialized Applications |
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O-rings, rubber seals and custom molded rubber components for: » Water system seals, faucets, etc. » Brake systems » Ozone exposure applications » Automotive cooling systems » General Industrial Use |
» glycol-based brake system seals » FDA approved applications » NBR NSF standard 61 for potable water applications » NBR WRc, KTW water applications |
|
Temperature Range (dry heat) |
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low |
high |
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5 °F - 15 °C |
390 °F 199 °C |
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Application Advantages |
|||
» excellent chemical resistance » excellent heat resistance » good mechanical properties » good compression set resistance |
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Application Disadvantages |
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» poor low temperature flexibility » poor resistance to hot water and steam |
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Modifications |
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» differing monomer compositions and fluorine content (65% to 71%) for improved low temperature, high temperature, or chemical resistance performance |
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Primary Uses |
Specialized Applications |
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O-rings, rubber seals and custom molded rubber components for » Automotive fuel handling » Aircraft engine seals » High temperature applications requiring good compression set » General industrial seals and gaskets |
» degree of fluorination (A, B, F, GB, GF, GFLT, GBLT, GLT, ETP) » copolymer or terpolymer of fluorinated hydrocarbon monomers |
|
Temperature Range (dry heat) |
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low |
high |
||
- 40 °F - 40°C |
250 °F 121°C |
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Application Advantages |
|||
» moderate resistance to petroleum oils » good resistance to ozone, UV, oxygen » excellence resistance to Freon® and ammonia |
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Primary Uses |
Application Disadvantages |
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O-rings, rubber seals and custom molded rubber components for: » refrigeration industry applications » general purpose seals, hose and wire |
» moderate water resistance » not effective in solvents environments |
|
Temperature Range (dry heat) |
||
low |
high |
||
-60 °F -51 °C |
300 °F 149 °C |
||
Application Advantages |
|||
» petroleum fuel and oil resistance » resists flex cracking » good ozone resistance » good heat resistance |
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Primary Uses |
Application Disadvantages |
||
O-rings, rubber seals and custom molded rubber components for: » Automotive transmissions. » Automotive steering systems |
» poor compression set performance relative to NBR » lesser water resistance and low temperature performance than some other elastomers |
|
Temperature Range (dry heat) |
||
low |
high |
||
- 40 °F - 40 °C |
300 °F 149 °C |
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Application Advantages |
|||
» excellent vibration dampening » excellent heat aging characteristics » good dynamic property retention over a wide temperature range » resistance to transmission fluids, water, glycol mixtures, and alkalies |
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Primary Uses |
Application Disadvantages |
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O-rings, rubber seals and custom molded rubber components for: » Automotive sealing applications. » Automotive transmissions » Power steering seals |
» not recommended for exposure to fuel, brake fluid, aromatic hydrocarbons or phosphate esters. |
|
Temperature Range (dry heat) |
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low |
high |
||
- 50 °F -46 °C |
212 °F 100 °C |
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Application Advantages |
|||
» good resistance to brake fluids » good resistance to water |
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Primary Uses |
Application Disadvantages |
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O-rings, rubber seals and custom molded rubber components for: » hydraulic brake systems seals and diaphragms » plumbing applications |
» poor weather resistance » poor petroleum oil and solvent resistance |
|
Temperature Range (dry heat) |
||
low |
high |
||
- 60 °F - 51 °C |
175 °F 79 °C |
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Application Advantages |
|||
» excellent strength and abrasion resistance » good resistance to petroleum oils » good weather resistance |
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Primary Uses |
Application Disadvantages |
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O-rings, rubber seals and custom molded rubber components for: » seals for high hydraulic pressure » highly stressed parts subject to wear |
» poor resistance to water » poor high temperature capabilities |
|
Temperature Range (dry heat) |
||
low |
high |
||
-75 °F -59 °C |
450 °F 232 °C |
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Application Advantages |
|||
» excellent extreme temperature properties » excellent compression set resistance » very clean, low odor and taste |
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Primary Uses |
Application Disadvantages |
||
O-rings, rubber seals and custom molded rubber components for: » seals (static) for extreme temperature applications » food applications » medical devices » FDA applications |
» typically not good for dynamic seals due to friction properties and poor abrasion resistance |
|
Temperature Range (dry heat) |
||
low |
high |
||
-75 °F -59 °C |
450 °F 232 °C |
||
Application Advantages |
|||
» excellent extreme temperature properties » excellent compression set resistance » very clean, low odor and taste |
|||
Primary Uses |
Application Disadvantages |
||
O-rings, rubber seals and custom molded rubber components for: » seals (static) for extreme temperature applications » food applications » medical devices » FDA applications |
» typically not good for dynamic seals due to friction properties and poor abrasion resistance |
|
Temperature Range (dry heat) |
||
low |
high |
||
- 60 °F -51 °C |
220 °F 104 °C |
||
Application Advantages |
|||
» excellence compression set » good resilience and abrasion » good surface friction properties |
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Primary Uses |
Application Disadvantages |
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O-rings, rubber seals and custom molded rubber components for: » rubber to metal bonded vibration isolators and mounts » automotive diaphragms » FDA applications for food and beverage seals |
» poor resistance to attack by petroleum oils » poor ozone, UV resistance |