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Securing the bonded door seal into E3000 / E3100 door

This bulletin describes simple way to   prevent the bonded door seal from falling out of its recess  whilst the E3000 (or E3100) critical point dryer door is being screwed into place. Bonded seals consist of an outer metal ring with a Nitrile or EPDM component bonded to its inner face. Bonded seals (sometimes referred to as "Dowty seals") normally push fit into the recess in the E3000 and E3100 door. However, sometimes the fit is not exact and therefore   when the door is positioned next to the CPD chamber the bonded seal can fall forward, making closure difficult.

Bonded door seals: E3100 (left) and E3000 (right)

The solution is to very slightly deform the metal part of the seal so that it will then push-fit into the CPD door recess. The best way to do this is to grip the seal in a workshop clamping vice (across the circumference of the seal) and slightly deform the seal so that it push fits into the recess in the CPD door. Please note that Bonded seals work by expanding sideways, and so a small deformation will not effect the sealing characteristics of the seal

Note: All new E3000 and E3100 model critical point dryers are fitted with seals that have been carefully adjusted to be a push fit.