What is a non-metallic gasket?

What is a non-metallic gasket?

Non-metallic gaskets, or soft gaskets, are fabricated from materials such as rubber, fiber, polytetrafluoroethylene (PTFE) and graphite. The material properties make them ideal for flat-faced applications with low pressures. Metallic gaskets are fabricated from one or a combination of metals.

What are the 5 typical gasket materials used?

Gaskets are normally made from a flat material, a sheet such as paper, rubber, silicone, metal, cork, felt, neoprene, nitrile rubber, fiberglass, polytetrafluoroethylene (otherwise known as PTFE or Teflon) or a plastic polymer (such as polychlorotrifluoroethylene).

What is a metallic gasket?

Metallic gaskets are fabricated from one or a combination of metals to the desired shape and size. Often used metallic gaskets are ring-type-joint gaskets (RTJ). They are always applied to special, accompanying flanges which ensure good, reliable sealing with the correct choice of profiles and material.

What are the advantages and disadvantages of metallic gasket over non-metallic gasket?

The metal offers strength and resiliency, while the non-metallic portion allows for easy conforming and sealing. Spiral-wound gaskets are commonly comprised of semi-metallic materials. These unique properties make semi-metallic gaskets suitable for the widest range of operating conditions.

What are metallic gaskets?

Metallic Gaskets are used for sealing higher temperature and pressure applications, where non-asbestos materials will fail. Below are some of the metallic gasket materials and material manufacturers we work with to help you with your specific metal gasket needs.

What is a PTFE gasket?

Virgin grade PTFE gaskets are made from 100% pure material which is used in most general applications. It is extremely soft and formable and is often used for chemical resistant seals and gaskets. It is made directly from the resin producer and has never been processed into a shape.

What is composite gasket material?

Composite gasket materials comprising one or more layers of porous fluoropolymer film laminated to one or more layers of expanded-graphite sheet, or a subassembly of one or more layers of expanded-graphite sheet laminated to metal sheet.

What are metallic gaskets made of?

Metal Gasket Materials – The manufacturing of metal gaskets can be done using multiple materials including Stainless Steel, Copper, Cast Steel, Monel, Inconel, Brass, Bronze, 17-4, among many others. They also can be combined with various rubber products.

What is ASME B16 21 for gaskets?

ASME B16.21 : Non-metallic flat gaskets for pipe flanges. This Standard covers types, sizes, materials, dimensions, tolerances, and markings for nonmetallic flat gaskets. Gaskets shall be packaged with NPS, Class, gasket manufacturer’s name, material designation, thickness, and ASME B16.21 marked or tagged on the package or gasket.

Non-metallic gaskets are manufactured non-asbestos material or Compressed Asbestos Fibre (CAF). Non-asbestos types include : Flexible Graphite. PTFE or RPTFE are used in high corrosive applications. Flat-ring gasket : Suitable for use with raised face (RF) flanges.

What are the different types of non asbestos pipe gaskets?

Non-asbestos types include : Flexible Graphite. PTFE or RPTFE are used in high corrosive applications. Flat-ring gasket : Suitable for use with raised face (RF) flanges. ASME B16.21 : Non-metallic flat gaskets for pipe flanges. This Standard covers types, sizes, materials, dimensions, tolerances, and markings for nonmetallic flat gaskets.

What are the standard gaskets for pipe flanges?

L01516 – Nonmetallic Flat Gaskets for Pipe Flanges has been added to your cart. B16.21 Nonmetallic Flat Gaskets for P… This Standard covers types, sizes, materials, dimensions, tolerances, and markings for nonmetallic flat gaskets. These gaskets are dimensionally suitable for use with flanges described in the referenced flange standards.