TOBO STEEL GROUP CHINA

Home ProductsFlange Gasket

ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir

ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir

  • ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir
  • ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir
ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir
Product Details:
Place of Origin: China
Brand Name: TOBO
Certification: ISO
Model Number: SS316L, 304
Payment & Shipping Terms:
Minimum Order Quantity: 10 PCS
Packaging Details: Plywood wooden cases
Delivery Time: 7work days
Payment Terms: D/P, T/T, Western Union
Supply Ability: 30000PCS
Contact Now
Detailed Product Description
Flange Standard: ANSI B16.5 ANSI B16.47 A/B Service: For Oil And Gas Pipeline Sealing
Pressure: 150lb 300lb 600lb 900lb 1500lb 2500lb Gasket Standard: B16.20
Specification: 1/2"-64" HS Code: 8484100000
High Light:

ASME B16.20 Metal Flange Gasket

,

600lb Metal Flange Gasket

,

Stainless Steel 304 Metal Flange Gasket

ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spiral Wound Gasket

 

 

The following table refers to tolerances for the diameter of wrapping pad (namely the nominal pipe diameters for the use of flange):

  DIM(mm) ANSI B16.5
BS1560(mm)
Mss sp-44
API605 Tolerances
Inner ring diameter
Pad inner diameter
<=600 <=24" >=26" and <=34" ±0.5
>600 and <=800 >24" and <=34 >=36" and <=60" ±0.9
>800 and <=1600 >34" and <=60"   ±1.3
>1600 >60"   ±1.6
Pad outer diameter <=600 <=24" <=24" ±0.9
>600 and <=160000 >24" and <=60"   ±1.8
1600 >60"   ±2.2
Outer ring diameter     >1/2" and <=60" ±0.9
<=600 <=24"   0-1.0
>600 and <=1000 >24" and <=34"   0-1.8
>1000 and <=1600 >34" and <=60"   0-2.2



The concept of spiral wound gasket construction was originated by Flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. The primary purpose for this development was the increasingly severe temperatures and pressures used by U.S. refinery operators in the first half of the century.

The necessity for a gasket to have the ability to recover cannot be over emphasized. The effects of pressure and temperature fluctuations, the temperature differential across the flange face, together with bolt stress relaxation and creep, demand a gasket with adequate flexibility and recovery to maintain a seal even under these varying service conditions. The Spiral Wound Gasket is the precision engineered solution to such problems, meeting the most exacting conditions of both temperature and pressure in flanged joints and similar assemblies and against virtually every known corrosive and toxic media.The spiral wound gasket meets the most exacting conditions of both temperature and pressure in flanged joints and similar assemblies and against every known corrosive and toxic media.

ASME B16.20 which covers spiral wound gaskets requires the use of solid metal inner rings in: Pressure Class 900, nominal pipe sizes 24 and larger, Pressure Class 1500 from nominal pipe sizes 12 and larger, Pressure Class 2500 from nominal pipe sizes 4 and larger and all PTFE filled gaskets. In the same standard is also described how a spiral wound gasket should be characterized, below you will find a image on it.

Basic Type
ASME B16.20 Metal Sealing Spiral Wound Gasket

Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. - Suitable for tongue and groove, male and female or grooved to flat face flange assemblies.
 

Inner Ring Type
ASME B16.20 Metal Sealing Spiral Wound Gasket

Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion, damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring. - Suitable for male and female pipe flanges.

 

Outer Ring Type
ASME B16.20 Metal Sealing Spiral Wound Gasket

Solid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts - Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.

Inner & Outer Rings Type
ASME B16.20 Metal Sealing Spiral Wound Gasket

 

A inner ring and outer ring type gasket will give an additional compression limiting stopper for gasket inner and outer side. It will prevent the corrosions on flange face at annular space. - Suitable for use with flat face and raised face flanges and specified for high pressure / temperature service - Class 900 and above or where corrosive or toxic media are present.

Product Description

1.Name:20in 150# SUS304 Metal Graphite Spiral Wound Gasket ASME B16.20

2. Type
Type Thickness(mm)
Basic form 3.2 4.5
With inner ring   4.5
With outer ring   4.5
With inner and outer ring   4.5

3. Structure type:
Filler Hoop Inner ring Outer ring
Asbestos SUS 304 Carbon steel Carbon steel
Graphite SUS 316 SUS 304 SUS 304
PTFE SUS 316L SUS 316 SUS 316
    SUS 316L SUS 316L

Flange type and Spiral Wound Gasket form
Flange type Spiral Wound Gasket form
Flat face flange(F.F) Gasket with an outer ring
Gasket with an inner and outer ring
Raised face flange(R.F) Gasket with an outer ring
Gasket with an inner and outer ring
 


 

ASME B16.20 Metal Sealing 900# Carbon Steel Outer Ring Stainless Steel 304 Inner Ring Graphite Filler Raised Flange Spir 4

Contact Details
TOBO STEEL GROUP CHINA

Contact Person: Ellen

Tel: 15821287672

Send your inquiry directly to us
Other Products