Durga Automotive

Mangolpuri, Delhi

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.

Stainless Steel of spring quality and of thin thickness is coated is coated with special quality binder and is cut to desired shape and size of Cylinder head gasket, exhaust gasket etc. Multiple layers are assembled into single gasket.

The high-temperature binder coating provides excellent fluid sealability across the outer faces and between the individual layers, while also sealing minor head and block surface imperfections. MLS head gaskets provide the ultimate in torque retention and supply extra strength to support lightweight aluminum casting designs.

Though assembled as a single unit, all the layers acts independently adjusting themselces as barrier to escaping gases. Any further microscopic deficiency in escape route of gases is taken care by high temperature coating, thereby making the multi layered gasket structure, totally impervious.

Single or double V shape Stainless steel metal strip is spirally wound along with high temperature standing gasketing material like Flexible Graphite etc, Seal structure thus formed is having very high resilience to seal fluid and hot gases at extremes of temperatures, at the joints of flanges in pipe lines .

Outer or inner metallic centering ring is provided to improve its functionality at high pressures in Industrial applications.

To seal exhaust gases in most critical conditions inside Exhaust system, encountering extremes of mechanical vibrations, thermal shocks and high temperatures, we manufacture these ring gaskets in variety of raw material like, flexible Graphite, Mica, Stainless Steel wire mesh, GI wire mesh or any other customer specified material. The most successful reinforced with knitted wire mesh, wherein F.G and Mica are responsible to seal the gases while embedded and holed by knitted wire mesh.