PTFE envelope gasket consists of two parts, cladding layer and insert filer. Insert filer is generally the non-metal sealing material with or without metal enhancement layer , such as asbestos rubber sheet, non-asbestos rubber sheet and graphite composite sheet board etc.
PTFE envelope gasket is mainly used in flat flanges and convex section steel pipe flanges connection. According to different structures of the inner filler, there are v-shaped,u-shaped and L-shaped.

Type

Code	Type	Cross Section
SG-G1204A	Y Type，PTFE dise in centerfrom out side.
SG-G1204B	C Type，PTFE tape heatsealed at one join
SG-G1204C	U Type，PTFE sheet mashine cut to envelope form

Service range

Cushioning Material	Cross Section	Max Temperature （℃）	Pressure （kgf/cm²）
NON-Asbestos Jointing Gasket		260	30
Reinforced Graphite Gasket		260	50
Reinforced Gasket+SS316 Corrugated Gasket		260	60

Specification