Spiral Wound Gasket,Spiral Wound Gasket Manufacturer, Exporter from India

Special Spring like Metal strips are wound with an Asbestos Filler by a special process to assure a leakproof seal. The sealing is done by the Asbestos Filler and the metal strip provides the spring. This combination of metal and soft Asbestos Filler plies compresses to its predetermined thickness under bolting pressure and thereby preventing leakage within the limit of its specified pressure and temperature ranges. With the addition of Centering devices, Gaskets to use on many types of flanges and closures.
MATERIAlS
Standard materials are type 304 Stainless steel with white Canadian (Chrysotile) Asbestos Filler.
Materials available are :-
METALS

Type 304 Stainless

Type 316 Stainless

Aluminium

Copper

Monel

Steel, Plain Steel, Zinc Coated
FILLERS

Compressed Asbestos Jointing Strips

P.T.F.E. Sintered Strip

Asbestos paper

White Chrysotile Asbestos

Blue African Crocidolite

GRAFSEAL.

When installing a Spiral Wound Gasket, check the dimensions of the Gaskets for use between pipe and pressure vessel flanges. The procedure is as follows:-
Measure ID of flange contact face.
Measure Gasket ID. If Gasket ID is not 1/8" larger than flange ID, do not use it unless it can be installed perfectly centered.

A Spiral Wound Gasket does not have the same feel as other Metallic or Non-Metallic Gaskets during the bolting-up. It's different-because it gives a little bit under each bolt as it is tightened. It is therefore important to tighten the bolts in small steps in proper sequence as shown
hereunder. Final tightening must be uniform with each bolt pulling same load. This will guarantee a trouble free joint. If not uniform, the joint may leak-particularly after it has been in hot service. Tighten the bolts after 24 hours and again a week later

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