Technical data

8
General instructions
Safety instructions for
fluorocarbon rubber
Fluorocarbon rubber is a common material used in
seals for shafts and O-rings.
When fluorocarbon rubber is exposed to high
temperatures (over 300° C) hydrofluoric acid can be
formed, which is strongly corrosive. Contact with the
skin can result in serious burn injuries. Contact with
the eyes can result in malignant ulcers. Inhalation of
fumes can injure the respiratory passages.
WARNING! Observe great care during work on
engines which can have been exposed to high
temperatures, e.g. overheating during seizing or
fire. Seals must never be burned loose during
dismantling or subsequently burned in an
uncontrolled manner.
● Always wear gloves of chloroprene rubber (gloves
for handling chemicals) and protective goggles.
● Handle the removed seal in the same way as
corrosive acid. All residue, including ash, can be
strongly corrosive. Never use compressed air to
blow clean.
● Place the residue in a sealed plastic tin provided
with a label. Gloves are washes under running
water before taking them off.
The following seals are in all probability manufactured
of fluorocarbon rubber:
Seals for crankshafts, camshafts, intermediate
shafts.
O-rings irrespective of where they are fitted. O-rings
for cylinder lining sealing are almost always of
fluorocarbon rubber.
Note that seals which have not been exposed to
high temperatures can be handled as normal.