best seal product spiral wound gasket

spiral wound gasket with inner & outer ring mainly used raised face flange used under extreme condition TA-LUFT 2002

Sprial wound gasket with graphite or PTFE filler, inner and outer ring

The gasket comprises a spirally-wound beaded metal band ( Standard: 316L; other materials possible ) in which a non-metallic band ( graphite or PTFE ) overlaying on both sides is inserted between the individual spirals of the metal band. The inner and outer ring serve to stabilise the spirals wherety the outer ring centres the flange screws. It is used in flanges with raised faces mainly for problem applications and under extreme conditions. One main area of appilication is the petrochemical industry.

Cross-section

Operating Limits

	Graphite	PTFE
Operating pressure	max. 320 bar	max. 320 bar
Temperature range	–200oC to +550oC	–200oC to +250oC
*from 450oC please consult manufacturer

Gasket Factors

	Graphite		PTFE
ÓVU	50N/mm2	ÓVU 0,1	45N/mm2
ÓVO	300N/mm2	ÓVO	300N/mm2
ÓBO300oC	220N/mm2	ÓBO200oC	240N/mm2
m (DIN2505)	1,4	m (DIN2505)	1,2

Approvals

TA-LUFT 2002  (VDI 2440 / VDI 2200)Fire Test as per API 607 Rev.4 (graphite filler)Blowout safe (graphite filler) as per Hot Blow-Out Test/ASTM Draft (HOBT 1)

best seal product spiral wound gasket