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 unsuitable good
Weather (light, ozone)  limiotit verry good
Water below 100° C good verry good
Lubrication oils verry good verry good
Hydraulic oils limiotit until verry good verry good
Fuel oils average verry good
Silicon oils and greases average verry good
Animal and vegetable fats verry good verry good
Brake fluidsn unsuitable limiotit
Petrol High-octane petrol average verry good
Kerosene  good verry good
Alcohols limiotit until verry good limiotit until verry good
Aromatic hydrocarbons limiotit verry good
Aliphatic hydrocarbons good verry good
Chlorinated hydrocarbons limiotit verry good
Acids (organic) unsuitable unsuitable
Alkalis unsuitable until good limiotit until good
Acids (inorganic) unsuitable until good limiotit until good

Registrated Trademarks

  • Perbunan® is a registered trademark of Bayer AG Leverkusen
  • Viton® is a registered trademark of DuPont Dow Elastomers