The inner ring functions as an additional compression stop and prevents inner buckling of the sealing element. It also creates a physical barrier between the sealing element and process stream shielding from heat and media while preventing erosion.
How are gaskets sized?
The Ring Gasket is the possibly the most common shape of gasket. It is also the easiest to measure. Simply measure the diameter of the inside of the circle – also called and inside diameter or I.D. Then, measure the diameter the outside of the circle, also called the outside diameter- or O.D.
What are spiral wound gaskets made of?
Usually a spiral-wound gasket is made from PTFE or graphite, both of which come in various grades. In addition, the metal is also selected for the appropriate degree of springiness combined with corrosion resistance and durability. Spiral-wound gaskets usually come with both an inner metal core and an outer metal ring.
What is inner ring in gasket?
The inner ring prevents inner buckling of the sealing element, and creates a physical barrier that shields the sealing element from heat and media while preventing erosion.
What is a ring gasket?
A ring-type gasket is placed and installed inside of the flange bolts and around the pipe bore. It has no bolt holes and is typically used on raised face flanges since it can easily sit right on top of the flange. Due to its composition, it can be installed without disassembling the joint.
What is a spiral gasket?
A spiral wound gaskets is categorized as semi-metallic gasket that is typically used for high pressure applications. The sealing element is formed by winding two materials (one for sealing, one for resilience) into thin v-shaped spirals.
What is a spiral wound gasket used for?
Spiral wound gaskets can be used for sealing flange joints, manhole and handhold covers, tube covers, boilers, heat exchangers, pressure vessels, pumps, compressors and valves; in industries such as petrochemical, pharmaceutical, shipbuilding, and food processing, in power industries and nuclear power stations.
What is a CG spiral wound gasket?
Style CGI spiral wound gaskets are a Style CG gasket fitted with an internal ring which gives an additional compression limiting stop and provides a heat and corrosion barrier protecting gasket windings and preventing flange erosion.
What is spiral gasket?
Spiral Wound Gaskets are metal gaskets made with three key elements. 1) A metal spiral winding which is spot welded on the OD and ID. 2) A seal filler material to go between the winding layers. This material must be compatible with the application the spiral wound gasket is meant to seal.
