Home > Products > Envelope Gaskets > Style 115 Milled Type

DAR manufactures PTFE envelope gaskets in three standard styles and with almost any combination of filler materials. Fillers and envelopes are also available individually for customer assembly. Choose from the styles below for more details.  

Style 115 Milled Type Envelope Gaskets


Envelope Description

Envelope Style 115

Style 115 is a machined or milled center envelope. When ordering PTFE envelope gaskets, the numeric designation is for the envelope type, followed by a letter or letters which designates the filler type.

Filler Types

Filler Type D - Darpak

A Milled PTFE envelope with Darpak , a high temperature compressed synthetic fiber gasket filler 

Filler Type B - Blue Felt A Milled PTFE envelope with Blue Felt Sheet is a homogeneous blend of polymers and reinforcing materials. It has good compressibility and heat and chemical resistance.

Filler Type N - Neoprene

A Milled PTFE Envelope with commercial grade Neoprene filler

Filler Type V - Viton

A Milled PTFE Envelope with commercial grade Viton filler

Filler Type BSB - Blue Felt/Corrugated Steel/Blue Felt A Milled PTFE Envelope with a corrugated Carbon Steel disk between two pieces of Blue Felt fillers

Filler Type BDB - Blue Felt/Darpak/Blue Felt A Milled PTFE Envelope filled with a compressed synthetic fiber gasket between two pieces of Blue Felt 

Filler Type BSSB - Blue Felt/Stainless Steel/Blue Felt A Milled PTFE Envelope with a corrugated Stainless Steel disk between two pieces of Blue Felt fillers
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