PTFE Envelope Gasket, Packaging Type : Depends On Supplier

A PTFE envelope gasket is a composed gasket. The product consists of an envelope of PTFE with an inlay. The envelope gasket is mainly applied as a flange gasket in applications where a high chemical and high pressure resistance is required.
PROPERTIES OF A PTFE ENVELOPE GASKET
Envelope gaskets have the chemical resistance of PTFE, but the strength and resilience of the inlay material. PTFE envelope gaskets combine the benefits of different materials:
Good chemical resistance.
Wide temperature range. This depends both on the envelope as the inlay material.
Good pressure resistance, depending on the choice of the inlay material.
APPLICATIONS OF THE PTFE ENVELOPE GASKET
In a chemical aggressive environment, where pollution of the medium is not allowed, it is complicated to apply a standard gasket. Here PTFE envelope gaskets are applied as flange gaskets. For example, in the (petro) chemical industry and in the process industry. The envelope gaskets are also ideal for application in the food industry. PTFE is physiologically inert and may be used in direct contact with food (FDA)