Flexible Graphite Gaskets

natural graphite flakes are expanded to 300 times their original volume by chemical and thermal treatments, these expanded flakes are compressed under mechanical force to attain sheet of desired dimensions. During this processing all the layers of individual flakes get interlock with each other, their-by providing a regenerated single molecular structure. The sheet structure so obtained is flexble in nature and exhibit some unique properties:

• capable to with-stande temperatures from cryogenic to 2600� non-oxidizing atmosphere.
• chemically inert (with exceptions to few strong oxidizing reagents.)
• self-lubricatging.
• no binder or filler, infinite life.
• impervious structure.
• does not hardens or change its physical structure with time or when subjected to stringent conditions of high temperature and pressure.

due to its laminar structure, flexible graphite exhibits very high degree of expansion, and fills-in even any microscopic deficiency in the mating surfaces their-by providing a perfect seal. Commonly used gasketing sheets are made out of fiberous materials, wherein fibers of various types are bonded together with elestomers and binders, how so ever good the fiberous material be, but when subjected to extreme conditions of high temperatures, pressures, thermal shocks , these elestomers and binders either get charred away or harden their- by leaving the composite structure prone to leakages. Flexible graphite sheets are mechanically bonded to tanged steel sheets. This no-reorque composite structure with above stated properties is now ready for cutting in any desired shape and size.