Customer Problem:
The customer required gaskets for the overpressure valves of marine
engines which show sufficient sealing force even when operating
at low pressures, which are heat resistant and resistant to various
chemicals, and which at the same time feature low compression set
values.
Zrunek Development:
For this purpose Zrunek developed an FPM-compound,
which has a hardness of only 45 Shore but at the same time features
very good compression set values (ZruElast® FPM 7245).
Subsequently Zrunek created the compound ZruElast® NBR 3120
for use at even lower pressures. This is a nitrile rubber-based
compound with an extremely low hardness of 20 Shore!
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