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Spiral Wound Gasket
   

Spiral Wound Gasket
 

SPIRAL WOUND GASKET

This gasket is wound alternatively by V or W shaped metal hoop and non-metal hoop of various materials according to specific working condition. Depend on its excellent compression resilient, it is suitable for sealing spots where the alteration of temperature and pressure are frequent, such as pipe, valve, pump, etc. They are available in all standard the flanges of sizes, such as ANSI, API, BS, JPI, DIN, etc.

 
Type Cross section Hoop material Filler material Inner, Outer Ring material
Basic type 　

AISI304, 316 etc

As specified Stainless Steel Belt

　

 Asbestos Carbon steel sheet or AISI304, 316 etc, as specified sheet
With inner ring 　 Expanded Graphite
With outer ring 　 PTFE
With inner, outer ring 　


SERVICE RANGE

Commodity Pressure (kgf/cm2) Temp (℃) Leakage rate Min Pretight Factor
Spiral Wound gasket Filled With Expanded Graphite (Under hot water, oil, etc.) 300 In Oxidizing Media –240~550 1.0x10-5 cm3/s 400 kgf/cm2 2.5~3
(Under Vapor oil, gases, etc.) 200 In Non-oxidizing Media 
–240~800
Spiral Wound Gasket Filled With Asbestos 150 -150~450 1.0x10-4 cm3/s 500 kgf/cm2 3~4

Spiral Wound Gasket Filled With
PTFE 

 150 -200~250 1.0x10-5 cm3/s 400 kgf/cm2 2.5~3
Sealing packing 　
Sealing Gasket 　
Ceramic products 　
Fiberglass products 　
Asbestos products 　
High temperature resistance 　
Heat protection 　
Rubber sheet and roll