AMRITA ENGINEERING COMPANY, hbutt weld fittings manufacturers, socket weld fittings manufacturers, threaded fittings manufacturers, butt weld fitting dealers, butt weld fittings stockist, socket weld fitting dealers ,

AMRITA ENGINEERING COMPANY established in-house facilities for manufacturing different types of gaskets and also offering wide range of custom made gaskets as per drawing to suit piping/equipment flange joints.

Spiral Wound Gaskets
Metal Jacketed Gaskets
Heat Exchanger Gaskets
Valve gaskets
Cut gaskets /Non metallic gaskets
Custom made gaskets for Boiler manholes, vessel manholes, etc

Our regular spiral wound gaskets are manufactured as per relevant codes of ASME , ANSI, EN, DIN, BS

Typical Configuration of Spiral Wound gasket

Spiral wound gaskets are produced by spirally winding a “V” formed metal strip (SS 304/SS304L, SS316/SS316L,SS321 etc) and a strip of non-metallic filler material (Graphite,PTFE/TEFLON,Ceramic).

Outer rings/centering rings are normally of carbon steel.Inner rings are usually made of the same material as the gasket metallic strip. A few plant owners normally use of SWGs without inner rings but it is preferred that SWGs with inner rings for its long life.

Following picture shows cross-sectional view of different standard types of SWGs

First one SWG containing of sealing element without outer ring/inner ring
Second SWG containing of sealing element with only inner ring
Third one SWG containing of sealing element with only outer ring
Fourth SWG containing of sealing element with outer ring and inner ring
Fifth SWG containing of sealing element with only PTFE/TEFLON sealing zone

HOW TO ENQUIRE OR ORDER A STANDRAD SPIRAL WOUND GASKET (SWG)

PLEASE SPECIFY	EXAMPLE
GASKET STYLE	SWG with OR and with IR
SIZE	2”
PRESSURE RATING	150 class
GASKET STANDARD	ASME B16.2
WINDING MATERIAL /WINDING STRIP	304
FILLER MATERIAL	Graphite
OUTER RING MATERIAL	CS
INNER RING MATERIAL	304 (If inner ring required )

Example: “2 inch SS304 Spiral wound graphite filled gasket with SS 304 inner ring & CS outer ring as per ASME B16.20 “

GASKET STYLES	SWG with OR and IR
	SWG with OR and without IR
	SWG with IR only and without OR
	SWG without OR and without IR
	SWG with PTFE/TEFLON sealing zone, no OR, no IR

SIZES	PRESSURE RATING IN LBS	GASKET STANDARD
½ INCH TO 24 INCH	150, 300, 400, 600, 900, 1500, 2500	ASME B 16.2 FOR ASME B16.5 FLANGES
26 INCH TO 60 INCH	150, 300, 400, 600, 900,	ASME B 16.2 FOR ASME B16.47 SERIES-A FLANGES
26 INCH TO 60 INCH	150, 300, 400, 600, 900,	ASME B 16.2 FOR ASME B16.47 SERIES-B FLANGES
DN 10 TO 3000	PN 10 TO PN 400	EN 1514-2 gaskets for EN 1092-1 FLANGES

WINDING STRIP	FILLER MATERIAL	OUTER RING MATERIAL
STANDARD PRACTICE	STANDARD PRACTICE	STANDARD PRACTICE
SS 304	GRAPHITE	CARBON STEEL
304L	PTFE/TEFLON
316	CAF/ASBESTOS

SPECIAL APPLICATIONS	SPECIAL APPLICATIONS	SPECIAL APPLICATIONS
321	PTFE	304
ALLOY 20	CERAMIC	304L
MONEL		316
DUPLEX		ALLOY 20
SUPER DUPLEX
HASTELLOY C276