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Spiral Wound Gasket
 
Spiral Wound Gasket is the highly reliable gasket, which is widely used from low pressure line to high temperature and high pressure

Spiral wound gasket is the most ideal semi metallic gasket designed reasonably for high temperature and high pressure and its shape is to concretely weld non-ferrous metal (filter) and metallic thin plate (hoop) in W-shape section

Because it has excellent performance on heat resistance, pressure resistance, and temperature change, it is widely used from general petroleum refining to petrochemical field.
   
   
How to recognize and mark it according to ASME B16.20 standard
   
 
   
   

KUKIL INNTOT SPIRAL WOUND GASKET TYPE
   
 

Basic

Inner Ring

Outer Ring

In & Outer Ring
   
   

Spiral Wound Gasket Color Coding and Max. Temperature
   

< Hoop Material >
 
 

Material

Abbreviation

Max. Temperature [ ℃ ]

Color Code - ASME B16.20

Carbon Steel

CRS

540

Silver

304 SS

304

760

Yellow

316 L SS

316 L

760

Green

347 SS

347

925

Blue

321 SS

321

760

Turquoise

Ni-Cu
Monel 400
Grade 400

?

Mon

820

 Orange

Nickel 200

Ni

760

Red

Titanium

Ti

1,090

Purple

20 Cb-3 Alloy

A-20

760

Black

Ni-Mo
Hastelloy B
Grade B2

HAST B

1,090

Brown

Ni-Mo-Cr
Hastelloy C
Grade C-276

HAST C

1,090

Beige

Ni-Cr-Fe
Inconel 600
Grade 600

INC 600

1,090

Gold

Ni-Cr-Fe-Ti
Inconel X-750
Grade X-750

INX

1,090

No Color

Ni-Fe-Cr
Incoloy 800
Grade 800

IN 800

870

White
   
  < Filler Material >
   
 

Material

Abbreviation

Max. Temperature [ ℃ ]

Color Code - ASME B16.20

Non-Asbestos

N.A

250

No Stripe

Polytetrafluoroethylene

PTFE

250

White Stripe

Mica-Graphite

M.G

1,000

Pink Stripe

Flexible-Graphite

F.G.

650

Gray Stripe

Ceramic

CER

1,100

Light Green Stripe
   
   

Tolerances
   
 

Gasket

Compressed
Thickness

Ring(s)Inner & Outer

KUKILNO.

Thickness

Tolerances

A

3.2

± 0.13

2.3 ~ 2.5

2.0

B

4.5

± 0.13

3.2 ~ 3.4

3.0

C

6.4

± 0.13

4.6 ~ 5.1

4.0

D

7.2

± 0.13

5.1 ~ 5.6

5.0
   
 

ASME B16.20

Tolerances

[ mm ]

ANSI B16.5

ANSI B16.47-A

ANSI B16.47-B

D1

1/2" ~ 3"

4" ~ 24"

-

-

-

26" ~ 60"

-

-

26" ~ 60"

± 0.8

± 1.5

± 3.0

D2

1/2" ~ 8"

10" ~ 24"

-

-

-

-

26" ~ 34"

36" ~ 60"

-

-

26" ~ 34"

36" ~ 60"

± 0.4

± 0.8

± 0.8

± 1.3

D3

1/2" ~ 8"

10" ~ 24"

-

-

-

26" ~ 60"

-

-

26" ~ 60"

± 0.8

+ 1.5 / - 0.8

± 1.5

D4

1/2" ~ 24"

-

-

26" ~ 60"

-

26" ~ 60"

± 0.8

± 0.8