Asbestos Spiral Wound Gaskets: This sophisticated type of gasket is made from concentric layers of metal and asbestos. The product's design is extremely strong, but it still leaves nearly pure asbestos fibers exposed to the open air.
What is non-asbestos gasket made of?
These materials are now commonly comprised of aramid fibre (Kevlar), carbon and other non-organic fibres, which are in turn blended with different polymers to meet different applications: most commonly nitrile rubber, for fuel and oil resistance.
What will replace asbestos gaskets?
Manufacturers found that other compressed, resilient fibers such as Kevlar and graphite were a safe and effective replacement to asbestos gaskets. Two of the most common brands for non-asbestos gaskets, ones you'll often see on the shop floor of Breiner Non-Metallics, are Thermoseal (Klinger) and Garlock.
What is cranite gasket?
Since those materials eventually needed replacing, Crane marketed "Cranite," an asbestos-based sheet material used to produce replacement gaskets and packing, despite noting in its catalogs issued from 1923 to 1962 that replacements made of other materials were available.29 jun 2016
What is the meaning of non asbestos?
Non-asbestos gasket sheets are made using organic fibers, aramid fibers, NBR and mineral fibers. These can be used for application where water or oil resistance is required. ... Because carbon or organic materials are the base of non-asbestos gaskets, they are safer to use than asbestos gaskets.13 ago 2018