Standard Spiral Wound Gaskets

BT-SWG Spiral Wound gasket is formed of v-shape or w-shape metallic wire and soft non-metallic filler spiraling and welding. According to the various of flanges , it can be within or without inner and outer rings.

Depend on its excellent compression resilience it is suitable for sealing spots where the alteration of temperature and pressure are frequent.

Types:

SWG-R Basic Type

Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. - Suitable for tongue and groove, male and female or grooved to flat face flange assemblies.

SWG-RIR Inner Ring Type

Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion, damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring. - Suitable for male and female pipe flanges.

SWG-CG Outer Ring Type

Solid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts - Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.

SWG-CGI Inner & Outer Rings Type

A inner ring and outer ring type gasket will give an additional compression limiting stopper for gasket inner and outer side. It will prevent the corrosions on flange face at annular space. - Suitable for use with flat face and raised face flanges and specified for high pressure / temperature service - Class 900 and above or where corrosive or toxic media are present.

Typical Applications

It can be used as the static sealing element of pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc. It has been widely applied in the fields of petrochemical, mechanical manufactory, power station, metallurgy, shipbuilding, medical and pharmaceutical nuclear power station and navigation, etc.

Metallic Windings and Non-Metallic Fillers .

The color cord as ASME B 16.20 on request

Spiral Wound Gasket Stamp Marking Example:

Marking rules:Manufacture 4'' 150 316L PTFE 316L OR 316L IR ASME B16.20

Order Example:

SWG,Type CGI, Material 316L/316L/PTFE/CS(IR/WINDING/FILLER/OR), Size 4″ 150# ASME B16.20