A newly developed FKM is well-suited for use as a Fluorocarbon sealing material. Volume swell in all CIP media was minimal and in some virtually zero. The materials engineered by Trelleborg Sealing Solutions for its new range of static seals for hygienic-design couplings have undergone testing in Cleaning-In-Process (CIP) media. Ethylene Propylene Diene Monomer (EPDM) E7502, FKMs V8605 and Fluorocarbon (FKM) V8T41 tested well as a fluorocarbon sealing material.
One test the EPDM E7502, FKMs V8605 and V8T41, underwent was immersion in 21 commonly used CIP fluids. The sealing materials were measured for volume swell. In all cases but one the volume change of the materials was well below ten percent. In fact, in most CIP media the change was less than five percent.
In a combination of a two percent solution of acidic acid, citric acid and formic acid at +140°F/+60°C volume swell of V8T41 was well below five percent. In a one percent concentration of acidic CIP media with oxygen at +104°F /+40°C, almost no swell was recorded. The material is also suitable for applications up to +338°F/+170°C.
Trelleborg