Spiral Wound Gasket (SWG) Asme B16.20 16.47

• Customization: Available
• Material: 316L, 304, Graphite, PTFE
• Type: Oil Seal
• Model NO.: RS1-CGI
• Shape: O-Ring
• Standard: Standard, as Requested
• Certificate: Ios9001
• Transport Package: Wooden Case, Plastic Film, Carton Box
• Specification: ASME, BS, JIS and EN(DIN) standards and others
• Trademark: RILSON
• Origin: China, Zhejiang
• HS Code: 84841000
• Production Capacity: 200, 000 PCS Per Week

Product Description

Available in a full range of styles and materials, our spiral wound gaskets are manufactured in accordance with ASME B16.20 for use in all industry flanges, including ASME/ANSI B16.5, ASME B 16.47, Series A & B. American Seal & Packing assures strict adherence to these specifications as routine inspection procedures are applied throughout the manufacturing process. In addition, we maintain trace ability of all materials used in our gasket construction to provide material certifications as required.

Normal Pressure: from 150# to 2500#
Normal Diameter: from  1/2'' to 60''

Usage: Flat and raised faced diameter flanges up to and inclusive of Class 2500.
Technical Benefits: >Metallic winding suited for cyclic loading
                                     >Outer ring center gasket
                                     >Inner/outer ring provides additional blow-out strength
                                     >Inner/outer ring provides a compression stop
                                     >Prevents flange erosion
                                     >Prevents inward buckling
                                     >Reduces turbulent flow
                                     >Recommended for high pressure/temperature applications
Applicable Standards: >ASME B16.20
                                           >BS, JIS,DIN
                                           >Suited for ASME B16.47 series A/B flanges
Metallic Strip
The standard thickness of the metallic strip is 0.2 mm.

Filler
Filler is normally used for thickness from  0.5 mm to 0.6 mm.
- Flexible graphite 
- PTFE
- Ceramic
- Asbestos

Centering ring
The centering ring does not come into direct contact with contained fluid. It is normally made of carbon steel and electro plated or painted to avoid corrosion. Other materials are available on request.

Inner ring
Inner ring is used to avoid excessive compression due to high seating stress in high-pressure service and it is also used to reduce turbulence in the flange area. It is normally made of the same material as the gasket metallic srtip.

Manufaturing sizes
This limitations are general and can vary according to the special customer.

Thickness

The standard manufacturing thickness for spiral wound gaskets are: 3.2 mm; 4.5 mm; 6.5 mm (measured across metallic strip not including the filler, which protrudes slightly beyond the metal).

Manufacturing tolerances
The tolerance of the gasket diameters (d1, d2, d3, d4, s, s1) are stipulated by ASME B 16.20 and  DIN 2632-2638 standards. The gaskets designed for non-standard flanges meet the recommendations by the ASME B 16.20.

Dimensions
The dimensions of the standard SWG meet the ASME, BS and EN (DIN) standards.

Style CG - Utilizes an external ring which accurately centers gasket on flange face, provides additional radial strength to prevent gasket blow-out and acts as a compression stop. A general purpose gasket suitable for use with flat face and raised face flanges up to and inclusive of class 2500. See note at bottom of page 8 for inner ring requirements.

Style CGI - A Style CG gasket fitted with internal ring which gives an additional compression limiting stop and provides heat and corrosion barrier protecting gasket windings and preventing flange erosion. Suitable for use with flat face and raised face flanges. See note at bottom of page 8 for inner ring requirements. 

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

Production Flow

Shearing==>Punching==>Lathing==>Drilling==>Assembling==>Packaging
 
All is for better life!

 

Metal Winding Strip Materials Stainless Steel 316L Stainless Steel 304  Stainless Steel 309  Stainless Steel 310  Stainless Steel 316Ti  Stainless Steel 321  Stainless Steel 347  Monel 400  Nickel 200  Inconel 600  Inronel 625  Inconel X750  Incoloy 800  Incoloy 825  Hastalloy B2  Hastalloy C276  Titanium

Filler Materials   Treated Asbestos Fiber Non-Asbestos Fiber P.T.F.E Graphite Ceramic  Aluminum

Outer Ring Materials Carbon Steel Stainless Steel 304 Stainless Steel 316L Stainless Steel 316Ti Stainless Steel 321 Stainless Steel 347 Stainless Steel 4l0 Monel 400 Nickel 200 Inconel 600 Incoloy 800 Inroloy 825 Hastalloy B2 Hastalloy C276 Titanium Alloy 20