What is the effective life of the base tetra seal?
Gaskets of ALL materials have a limited life. The standard practice in the filter industry is to replace the gasket each time the filter is removed whether or not it is deteriorated or damaged. Rubber-like gasket materials take a permanent set under compression, particularly under elevated temperatures which tend to speed age hardening. A good practice would be to change the gasket on every 4th filter change. Thoroughly clean the gasket and groove when reusing or installing a new gasket. Dirt is frequently the cause of leakage.
