tubing and films since 1969
Semi-caps have a closed radius that ensures the easy and damage-free insertion of gaskets in mechanical parts with sharp edges.
They are predominately used for gaskets, cylinder heads, shims, valve, valve guides and bearings.
They are also used for the easy insertion and protection of O-rings in combustion engines to avoid damage; the closed radius also prevents caps from slipping on the valve.
This product is also used when inserting Dunlop, Schrader and Presta valves in tyres to prevent the valve metal from damaging the tyre.