table of resistances

Material Perbunan
Viton B
Combosition   
NBR
Aerylonitrile-butadiene rubber
FKM
Fluorelastomer rubber
Colour VI black/VA anthracite anthrazit
Distinguishing mark no yellow dot
Temperature range in °C (at the sealing lip) –30° until120° C  –25° until +250° C
Shore hardness 75 ±5 Shore A 75 ±5 Shore A
Abrasion resistance to DIN 53516 very good good
Flame resistant no yes  no yes
Gas permeability --- xxx
Weather (light, ozone)  x xxxx
Water below 100° C xxx xxxx
Lubrication oils
xxxx xxxx
Hydraulic oils x until xxxx xxxx
Fuel oils xx xxxx
Silicon oils and greases xx xxxx
Animal and vegetable fats xxxx xxxx
Brake fluidsn --- x
Petrol
High-octane petrol
xx xxxx
Kerosene  xxx xxxx
Alcohols x until xxxx x until xxxx
Aromatic hydrocarbons x xxxx
Aliphatic hydrocarbons xxx xxxx
Chlorinated hydrocarbons x xxxx
Acids (organic) --- ---
Alkalis --- until xxx x until xxx
Acids (inorganic) --- until xxx x until xxx



Explanation of symbols
xxxx = very good
xxx = good
x = average
x = limiotit
--- = unsuitable
Registrated Trademarks
Perbunan® is a registered trademark of Bayer AG Leverkusen
Viton® is a registered trademark of DuPont Dow Elastomers