Specifically designed for Hydrofluoric Acid (HF), to safely seal an extremely dangerous chemical, as well as where crevice corrosion is a concern, Teadit®'s Echelon-HF™ Gasket is a superior choice. This design is based on an ASME B16.20 spiral wound (primary seal), with a camprofiled Monel® inner ring, providing all the advantages of an inner ring and ePTFE facing with the added benefit of creating a secondary seal that extends towards the bore of the pipe.

Application
Typical application for the Echelon-HF™ Gasket is HF Alkylation service where carbon steel flanges can be subject to extreme crevice corrosion. Our standard and proven configuration for HF Alkylation service utilizes Flexible Graphite filler for the spiral wound portion and ePTFE facing, creating an overall Collar/Inner Ring providing enhanced crevice corrosion protection for an extremely dangerous chemical. Where this configuration is not acceptable, other facing combinations can be utilized.

Features
Camprofiled Monel Inner Ring
Compressible ePTFE Faced Inner Ring
Low Stress Design Windings
APX2 Flexible Graphite Filler
Custom Dimensions Available
Manufactured in Pasadena, TX