Durlon Extreme Temperature Gaskets

Durlon® Extreme Temperature Gaskets - ETG - have been engineered to provide the preeminent solution to sealing gasketed joints having exposure to high temperatures, typically greater than 650°C - 1,200°F and up to 1,000°C - 1,832°F).

At extreme temperatures, flange assembly torque retention is the key component to maintaining a tight seal.

Durlon® ETG combines a oxidation boundary material with the excellent stability and sealing characteristics of flexible graphite in order to preserve seal integrity and to retain the initial assembly torque.

Durlon® ETG’s engineered design principle is focused around providing oxidation protection zones around the central oxidation inhibited flexible graphite sealing component.

Standard industrial grade flexible graphite typically begins to rapidly oxidize at around 650°C - 1,200°F.

By adding oxidation inhibitors to the graphite, the rate and amount of oxidation can be significantly reduced, thus extending the seal life of the material.

However, oxidation can still occur and at extreme temperatures, it can be fatal to the integrity of the joint.

Durlon® ETG adds an inner and outer protection boundary in the form of a mica-phyllosilicate based sealing material called Durlon® HT1000® which consists of phlogopite mica paper impregnated with an inorganic binder at less than half the binder amount found in a typical vermiculite-phyllosilicate filled product.

This lower binder content allows for superior weight retention and results in ultimate extreme temperature sealing performance.