Basic Info.
Material
Stainless Steel Inner and Outer Ring
Flange Standard
ANSI B16.5
Service
for Oil and Gas Pipeline Sealing
Gasket Standard
B16.20 API 6A Norsok L-005
Pressure
150lb 300lb 600lb 900lb 1500lb 2500lb
Filler
Graphite / PTFE/ Mica/ Ceramic
Certificate
ISO 9001 ISO4001
Product Description
Company Profile
Product Description
PTFE Coated ASME B16.20 Spiral Wound Gasket Made of SS304/SS316/SS321/SS347/SS904/UNS S32750
PTFE coated ASME B16.20 spiral wound gaskets are a type of gasket that combines the strength and resilience of a metal spiral wound gasket with the non-stick and chemical-resistant properties of PTFE (polytetrafluoroethylene). These gaskets are commonly used in applications where a high level of chemical resistance is required, such as in the chemical and petrochemical industries.
The ASME B16.20 standard specifies the dimensions, tolerances, and materials for spiral wound gaskets used in flanged connections in piping systems. This standard applies to gaskets with nominal diameters from 15 mm to 3,000 mm, and pressures up to Class 2500.
The PTFE coating on these gaskets provides a smooth, non-stick surface that resists chemical attack and prevents gasket sticking, even under extreme conditions. PTFE is highly resistant to a wide range of chemicals, including acids, alkalis, and organic solvents, making it an ideal choice for use in harsh chemical environments.
In addition to its chemical resistance, PTFE also has excellent non-stick properties, which prevent the gasket from sticking to the flange surface. This is especially important in applications where the gasket may be exposed to high temperatures or high pressures, which can cause the gasket to deform or stick to the flange surface, compromising the seal.
The metal winding in these gaskets provides the necessary structural support to withstand high pressures and maintain the integrity of the gasket. The metal strip is typically made of stainless steel, which provides excellent corrosion resistance and can withstand high temperatures.
PTFE coated ASME B16.20 spiral wound gaskets are designed to conform to ASME B16.5 and B16.47 flanges, ensuring a secure and reliable seal. They are available in a range of sizes and materials, including PTFE, stainless steel, and other metals, to suit a variety of applications.
In conclusion, PTFE coated ASME B16.20 spiral wound gaskets are a highly effective sealing solution for applications where chemical resistance and non-stick properties are required. They combine the strength and resilience of a metal spiral wound gasket with the chemical resistance and non-stick properties of PTFE, providing a reliable and long-lasting seal in even the most demanding applications.
Basic Type
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
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
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
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.
Typical Applications
Pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc. Petrochemical, chemical, mechanical manufacturer, power station, metallurgy, shipbuilding, medical and pharmaceutical unclear power station and navigation, etc.
Spiral Wound gaskets, ASME B16.20 Metal Gasket,Marking
Ring & Strip Materials
| Minimum | Maximum | | GuideRing Color Code |
Material | F | C | F | C | Abberviation |
SS 304 | -320 | -195 | 1400 | 760 | 304 | Yellow |
SS 316L | -150 | -100 | 1400 | 760 | 316L | Green |
SS 347L | -150 | -100 | 1400 | 760 | 317L | Maroon |
SS 321 | -320 | -195 | 1400 | 760 | 321 | Turquoise |
SS347 | -320 | -195 | 1700 | 925 | 347 | Blue |
Carbon Steel | -40 | -40 | 1000 | 540 | CRS | Silver |
Alloy 20 | -300 | -185 | 1400 | 760 | A-20 | Black |
Hastelloy B3 | -300 | -185 | 2000 | 1090 | HASTB | Brown |
Hastelloy C276 | -300 | -185 | 2000 | 1090 | HASTC | Belge |
Incoloy 800 | -150 | -100 | 1600 | 870 | IN 800 | White |
Incoloy 825 | -150 | -100 | 1600 | 870 | IN 825 | White |
Inconel 600 | -150 | -100 | 2000 | 1090 | INC 600 | Gold |
Inconel 625 | -150 | -100 | 2000 | 1090 | INCO 625 | Gold |
Inconel X750 | -150 | -100 | 2000 | 1090 | INX | No Color |
Monel 400 | -200 | -130 | 1500 | 820 | MON | Orange |
Nickel 200 | -320 | -195 | 1400 | 760 | NI | Red |
Titanium | -320 | -195 | 2000 | 1090 | TI | Puple |
Products to our clients.
Our Superiority
Why choose Qishine?
High Quality: Qishine provide high quality products.
Reasonable and Competitive Price: Our products are sales well in oversea markets,especially in Europe, South America and Africa.
Professional Service: Qishine's sales team have rich experience in exporting and projects service.
Fast Delivery: Fast deliver the goods to all of the world.
One Stop Service: We provide gaskets,screws,flanges,pipes and fittings.Best choice for EPC companies and projects' construction.
Who choose Qishine?
Application:
FAQ
About Sample
1.We can offer samples for testing,courier freight afforded by the receiver .
2.For cost saving, freight prepaid is recommended.
3.Special requirement accepted
About Order 1.Payment Term: T/T, L/C
2.Trade Term: EXW, FCA, FOB, CFR,CIF,DDU
3.Documents: CI, PL, CO,MTC and BL.
About After Sale ServiceProduct Quality Guarantee: We guarantee our products quality for 12months from the date of BL.
Address:
Room 209-1, 318 Houhang Qianshe, Huli District, Xiamen, Fujian, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Apparel & Accessories, Auto, Motorcycle Parts & Accessories, Construction & Decoration, Furniture, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware, Transportation
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ASME
Company Introduction:
We XIAMEN QISHINE IMP. & EXP. Co., Ltd. is dedicated to supplying extensive range of Pipe, Valve, Flange, Pipe Fitting, Fastener, Gasket and related spare parts for oil, gas, petroleum industry service. And we offer Solar Power Supply System, such as Photovoltaic Panel in New Energy Field. Qishine. En. Made-in-China. com is our homepage, you are welcome to login for more details.
All Qishine′s products are manufactured by ISO, API, CE/PED and EU approved factories. Professional production, scientific management and good workforce, making our products are popular in Europe, American, Middle East, Asia and Africa. Our products are 100% inspected before packing with qualification EN10204- 3.1 certificates. And any third party inspection before delivery are welcome.
Our advantages:
One-stop shop service, save time and cost for clients. Best choice for EPC companies and projects′ construction.
Good quality goods.
Rich experience in exporting and projects service.
Competitive price.
Professional service.
Choose Qishine means you stand with reliability, high quality & Competitiveness!
The future of Qishine begins today, and it is focused on being the preferred supplier of steel pipeline materials. For this, it must be differentiated by offering maximum quality goods, giving the best service, with the best possible competitiveness, and this is what we work on continually.
Good quality + competitive price + professional service = Long-term win-win cooperation. Please give both of us the nice opportunity to work together. I believe it will be a great start. Expecting your nice enquiry and to be your long-term strategy partner soon.
Thank you for your support!