Seal Gasket(spiral wound gasket) is formed by the V-shaped or W-shaped stainless steel belt and non-metallic filler through lamination, spiral winding, and spot welding of the tops and ends. With good compression elasticity, it is applicable to the sealing parts under the intense alternating temperature and pressure, as the static sealing elements at the flange joints of pipelines, valves, pumps, heat exchangers, towers, manholes, handholes, etc. Its widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy, aerospace and other fields.

Product Standards:
Our production is in compliance with the standards of ASME B 16.20, MSS SP-44, API 605, DIN, JIS, JPI, BS 1560, JG / T, GB / T, HG, SH, etc. Or products can be customized according to the users requirements. Please provide the specific drawings if the gasket is used in the heat exchanger with ribs.

Gasket Types:

Material Selection

Materials of Steel Belt and Inner and Outer Rings		Fillers			General Thickness (mm)
Name	Code	Name	Code	Applicable Temperature	V-shaped Gasket/Ring	W-shaped Gasket /Ring
Carbon Steel	CS	Asbestos	ASB	500	3.2/2.0 4.5/3.0 5.5/3.0	4.8/3.0 7.2/4.0
Stainless Steel	304(L),316(L)	Graphite	FG	650
Monel	Mon	Tetrafluoro	PTFE	260
Nickel, Titanium	Ni,Ti	Mica	MICA	850
Inco Nicke	Inconel	Ceramics	CER	1300
Hastelloy Alloy	HAST	Non Asbestos	NAF	500

 

The material of an inner ring is generally the same as that of the steel belt to meet the requirements of the medium and working conditions.
The material of an outer ring is the same as that of the pipelines and corresponding equipment casing, and the carbon steel outer ring is more economical.
The orders should be furnished with the specific materials, standards, nominal diameter DN, pressure rating PN, or definite sizes:

D1: Internal diameter of inner ring; D2: External diameter of inner ring; D3: Internal diameter of outer ring; D4: External diameter of outer ring

Representation: D1 × D2 × D3 × D4 the default thickness of gaskets is 4.5mm, and that of rings 3mm.