Filler material of Spiral Wound Gasket

: Office Paper Series; Printing & Writing Paper
: Flexible Graphite; Asbestos and Non-asbestos; Stainless Steel Belt
: Non-metallic Flat Gaskets; Metallic Gaskets; Gland Packing
: Carbon Black Grade N220; Carbon Black Grade N330; Carbon Black Grade N550; Carbon Black Grade N660; Carbon Black Grade N234; Carbon Black Grade N339
: Organophosphine antiscale; Polycarboxylic antiscale; Bactericide and Algicide; Chemicals For Sewage; RO Chemicals; Chemicals For Boiler; Siliphos-Dispenser; UF Chemicals; Organophosphoric Salts; Corrosion Inhibitor
: Gasket Machine; Carbon and Graphite Felt; Natural Flake Graphite

F.A.Q

date: 5/16/2010 read: 5

Flexible Graphite

This material is a high purity flexible graphite with no binders and fillers composed of 95 – 98% carbon. It exhibits superior sealability, and excellent resistance to a wide range of chemicals. Flexicarb can be used at temperatures from cryogenics to 900F in an oxidizing atmosphere, and up to 6000F in a reducing or neutral atmosphere. Its unique combination of low permeability, inherent lubricity, and compressibility make Flexicarb suitable for critical gas and vacuum service. Flexicarb also has the ability to flow into flange imperfections. The leachable chloride content of Flexicarb is 100 ppm maximum.

Polytetrafluoroethylene (PTFE)

This is used as a filler material in spiral wound gaskets where extreme chemical inertness is required for temperatures ranging from cryogenic to 482F. PTFE is unaffected by any known chemicals except molten alkali metals and fluorine precursors. Because of its low permeability, PTFE is frequently utilized on vacuum applications.