GOT-400 Spiral Wound Gasket is accumulated, hovered and wound, and spot welded beginning and end terminal by V-shaped or W-shaped stainless steel and non metal filler, which has good compression elasticity, and is suitable for the sealing parts with temperature and pressure altering violently. It is a static sealing parts used for such flange connecting joints as pipeline, valve, bump, heat exchanger, tower, manhole, and hand hole, etc. It is widely applied in departments as petrochemical, mechanical, electric power, metallurgy, boat building, medical, atomic energy, and aerospace, etc. 

Product standard:
We can produce according to standards as ANSI B 16.20,MSS SP-44,API 605,DIN,JIS,JPI,BS 1560,JG/T,GB/T,HG,SH, etc. Or the demands can be designated in detail by clients. E.g. the gasket used for heat exchanger and with ribs, please provide the detailed drawings. 

Gasket type:

Product name
 Code
 Suitable for
 Expression example
 
Basic type metal spiral wound gasket
 400 A
 Tenon slot surface
 304/PTFE
 
Metal spiral wound gasket with inner ring
 400 B
 Male-and-female face
 304 304/FG
 
Metal spiral wound gasket with outer ring
 400 C
 Convex surface
 304/ASB CS
 
Metal spiral wound gasket with inner and outer ring
 400 D
 304 304/FG CS
 
Metal spiral wound gasket with heat exchanger 
 400 T
 Heat exchanger
 304/FG with one rib 
 
Special-shaped metal spiral wound gasket
 400 S
 Special-shaped
 Elliptic
 


If the gasket is used for heat exchanger, generally we recommend the one with 3.2mm stainless steel inner ring. 
The narrow-band form is divided into sticking type and covering type  
Selectable material:

 Steel belt and the inner and outer ring profile
  Filler
 
  General thickness  mm
  
Name Code Name Code Appropriate Temperature  V-shape Gasket / Ring W-shape Gasket / Ring  
Carbon steel CS Asbestos ASB 500 3.2/2.0

4.5/3.0 4.8/3.0
5.5/4.0
7.5/5.0 
Stainless steel 304(L),316(L) Graphite FG
 650
  
 
 
 
   
 
 
 
  
 MONEL Mon PTFE
 PTFE
 250
 
Ni, Ti Ni,Ti Mica
 MICA
 950
 
Inconel INC Ceramic
 CER
 1000
 
Hastelloy, Zr HAST, ZIRC Non-asbestos
 NAF
 300
 


Generally the material of the inner ring is steel belt, to satisfy the medium and the working condition demands,
The outer ring material is the same as the pipe and the related equipment shell, the carbon steel outer ring is relatively economic.
The detailed order should indicate the detailed material, the used standard, the inside exhaust pipe nominal diameter DN, the pressure grade PN, or indicate the detailed size: 
D1: inner diameter of the inner ring; D2: outer diameter of the inner ring;
D3: inner diameter of the outer ring; D4: outer diameter of the outer ring
Writing methods: D1*D2*D3*D4 
The default thickness of the gasket is 4.5mm, and the ring 3mm