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Our rubber products are available in 30 to 90 Shore A durometer, depending on the compound. Both economical and superior grades tested according to ASTM D-2000 standard are available.
COMPARATIVE CHART OF PRODUCT FEATURES
| Natural rubber | SBR (BUNA-S, GRS) | Neoprene | Nitrile (BUNA-N) | EPDM (EPT, EPR) | Silicone | Viton® | |
|---|---|---|---|---|---|---|---|
| CHEMICAL NAME | Poly- isoprene |
Styrene butadiene |
Poly- chloroprene |
Acrylo- nitrile- butadiene |
Ethylene- propylene- diene terpolymer |
Poly- siloxane |
Fluorinated hydro- carbon |
| SAE 1200 & ASTM D-2000 Designation |
AA | AA,BA | BC,BE | BF,BG,BK | BA,CA | FC,FE,GE | HK |
| ASTM D-1418 Designation |
NR | SBR | CR | NBR | EPDM | VMQ | FKM |
| Minimum Temperature | -55ºC (-67ºF) |
-55ºC (-67ºF) |
-40ºC (-40ºF) |
-40ºC (-40ºF) |
-55ºC (-67ºF) |
-65ºC (-85ºF) |
-40ºC (-40ºF) |
| Maximum Temperature | 50ºC (122ºF) |
70ºC (158ºF) |
100ºC (212ºF) |
100ºC (212ºF) |
120ºC (275ºF) |
225ºC (437ºF) |
225ºC (437ºF) |
| Usual Shelf Life | 3 to 5 years |
3 to 5 years |
5 to 10 years |
5 to 10 years |
5 to 10 years |
Up to 20 years |
Up to 20 years |
| Advantages | -Outstanding elasticity -Good flexibility at low temperatures |
-Very good flexibility at low temperatures | -Good resistance to flame -Very good resistance to weather, ozone and natural ageing -Very good resistance to alkalis and acids |
-Very good resistance to oils and fuel -Superior resistance to petroleum- based hydraulic fluids -Wide range of service temperatures -Very good resistance to alkalis and acids |
-Excellent heat, ozone and sunlight resistance -Very good flexibility at low temperatures -Good resistance to alkalis and acids and solvents -Superior resistance to water and steam |
-Flexible at extreme temperatures -Low compression set -Excellent ultra-violet, weather and ozone resistance -Inert, odourless, tasteless and non-toxic |
-Excellent resistance to a wide variety of oils, fuel, solvents and acids at high temperatures -Very good impermeability to gases and steam -Very good weather, ozone and sunlight resistance |
| Restrictions | -Poor heat, ozone and sunlight resistance -Very little resistance to oils, fuel and to hydrocarbon solvents |
-Poor heat, ozone and sunlight resistance -Very little resistance to oils, fuel and to hydrocarbon solvents |
-Poor to low resistance to aromatic solvents -Limited capacities at low temperatures |
-Low resistance to ozone, sunlight and natural ageing -Poor resistance to polar solvents |
-Poor resistance to oils, fuel and to hydrocarbon solvents | -Poor abrasion and tear resistance -Poor resistance to solvents, alkalis and acids |
-Will be severely attacked by some solvents such as esters, ethers and acetates |
| PHYSICAL PROPERTIES | |||||||
| Tensile Strength | E | F-G | VG | VG | F-G | VG | VG |
| Ultimate Elongation | VG-E | G | G | G | G | VG-E | F-G |
| Compression Set | G | G | F-G | G | G | VG-E | VG-E |
| Heat Resistance | F | F-G | F-G | G | VG-E | E | E |
| Resistance to Flame | P | P | G | P | P | F-G | VG-E |
| Resilience | E | F-G | VG | F-G | G | G | F |
| Abrasion Resistance | E | VG-E | VG-E | VG-E | VG-E | P-F | F-G |
| Water Resistance | E | VG-E | G | VG-E | E | VG-E | G |
| CHEMICAL RESISTANCE | |||||||
| Acids | F-G | F-G | G | G | G | F | G |
| Alcohol | G | G | VG | F-G | F-G | G | F-G |
| Animal and vegetable oils | F | F | G | VG | G | G | E |
| Oils and fuel | P | P | F-G | G-E | P | P-F | E |
| Hydrocarbon solvents | P | P | G | E | P | P-F | E |
| Oxygenic solvents | G | G | P-F | P | VG | F | P |
E = EXCELLENT VG = VERY GOOD G = GOODF = FAIR P = POOR Complete data on physical properties of products are available upon request. This data and information are intended as guides only. Performance may vary within a rubber category depending on the compounds available.