حول Spiral Wound Gasket

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 φ3.2mm 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