- Butyl Rubber
Butyl - Columbian Carbon Co.
Butyl - Exxon Chemical Co. USA
Butyl - Polysar, Ltd.
rubber is an all petroleum product made by co-polymerizing isobutylene
and just enough isoprene to obtain the desired degree of unsaturation
necessary for vulcanization. Brominated and chlorinated butyl
rubber are also available and are prepared by select replacement
of hydrogen with bromine or chlorine.
the introduction of ethylene propylene rubber, butyl was the only
elastomer which was satisfactory for Skydrol 500 service over
a temperature range of -65 to +225 degrees F (-54 to +107 degrees
addition, butyl has excellent resistance to gas permeation which
makes it particularly useful for vacuum applications, and accounts
for its wide use in the manufacture of inner tubes and the inside
layer of tubeless tires.
is recommended for:
ester type hydraulic fluids (Skydrol, Fyrquel, Pydraul)
fluids and greases
is not recommended for: