ASME B16.20 Spiral Wound Gaskets Used for Pipe and Flange Sealing
Basic type spiral wound gasket
•Pre-press forming metal corrugated belt and non-metal belt alternately overlap,spiral
wound made.Also according to the conditions required to add reinforced ring.Basic type spiral wound gasket
||stainless steel(304,304L,316L,321,310,347)CRS,Alloy 20,Hastelloy b2,Hastelloy C 276,Incoloy 800,Inconel 600,Inconel*750,Monel 400,Nickel 200,Titannium)
||As per customer’s requirement
||7days after sample confirmed
||basic,inner ring,outer ring,inner and outer ring
||ISO9001; CE; BV;API
||The delivery time and the technical services of the customer requirement arrive ahead of the scheduled time.
Even its in the midnight, if the customer need a small o-ring, it will be send regardless of the cost.
It only complete 50% of the sales when the installation finished.
Stability of the product in use will be concerned after the installation, whether the product is stable in the operation process.
24 hours service will be followed if there is any question.
In the first period whether its customer’s mistake or own’s mistake, solve the problem firstly.
We can do technical transformation for the unreasonable seal.
Spiral wound gaskets — made with an alternating combination of formedmetal wire and soft fillermaterials — form avery effective seal when compressed between two flanges.A V-shaped crown centered in the metal strip acts as a spring, giving the gaskets greater resiliency under varying conditions. Filler and wire material can be changed to accommodate different chemical compatibility requirements. If the load available to compress a gasket is limited, gasket construction and dimensions can be altered to provide an effective seal.
A spiral wound gasket may include a centering ring, an inner ring or both. The outer centering ring accurately positions the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. The inner ring also reducesflange erosion and protects the sealing element.
Resiliency and strength make spiral woundgaskets an ideal choice under a variety of conditions and applications. Widely used throughout refineries and chemical processing plants, spiral wound gaskets are also effective for power generation, aerospace, and a variety of valve and specialty applications.
The ASME B16.20 gasket specification has been updated and changed to a new recommended standard. The new criteria incorporates a default to inner rings in all graphite-filled spiral wound gaskets unless the purchaser specifies otherwise. However, a graphite-filled spiral wound gasketwithout an inner ring will still be stamped with and in compliance to the ASME B16.20 standard.
General purpose gasket suitable for flat face and raised face flanges up to Class 2500
Centering ring accurately locates the gasket on the flange face, provides additional radial strength, and acts as a compression limiter
Spiral winding (sealing element) consists of pre-formed metal and soft filler material
NOTE: An inner ring is recommended for applications above Class 600, due to the high available bolt load. See Style RWI.
Suitable for flat face and raised face flanges up to Class 2500
Recommended for higher pressure applications, for use with PTFE fillers, and when delineated by ASME B16.20
Inner ring acts as a compression limiter and protects sealing elements from process media attack
Suitable for tongue and groove, male-female, or groove-to-flat face flanges
Spiral winding only, containing preformed metal and soft filler material
Inner and outer diameters of winding are reinforced with several plies of metal without filler to give greater stability
NOTE: Also available with inner rings Style RI.
MC and MCR Gaskets
For Manhole Cover Assemblies
Marking and color coding