got-403 spiral wound gasket with inner ring        
specification

spiral wound gasket with inner ring

got-403

description: got-403 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

type

cross section

material

basic type

inner, outer ring

carbon steel

stainless steel

filler material

flexible graphite

asbestos

ptfe

metal belt

stainless steel belt

with inner ring

with outer ring

with inner outer ring


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



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