Gasket materials available on reels

The high-tem­per­a­ture gas­kets from the novaphit and novam­i­ca prod­uct fam­i­lies fea­ture the high-qual­i­ty mate­ri­als graphite and phl­o­go­pite mica. In com­bi­na­tion with intel­li­gent expand­ed met­al inserts they guar­an­tee high seal­ing per­for­mance in extreme oper­at­ing con­di­tions. Both prod­uct fam­i­lies now include mate­ri­als on reels.
In order to meet legal require­ments such as TA Luft (Ger­man Clean Air Act) in con­junc­tion with VDI direc­tive 2290, gas­kets must have very excep­tion­al tight­ness char­ac­ter­is­tics. Fren­zelit uses high-qual­i­ty, expand­ed pure graphite as a gas­ket mate­r­i­al in novaphit for this pur­pose. novaphit also has out­stand­ing chem­i­cal, ther­mal (-200 to +550 °C) and mechan­i­cal resistance.

novaphit: Pure graphite – resistant to oxidation

A spe­cif­ic and con­trolled selec­tion of raw mate­ri­als guar­an­tees that only high-qual­i­ty graphite is used in the pro­duc­tion process. This raw mate­r­i­al ensures that novaphit is very resis­tant to oxi­da­tion through­out the entire appli­ca­tion tem­per­a­ture range. novaphit thus sat­is­fies the strin­gent qual­i­ty require­ments of DIN 28091–4, which per­mits max. 4% vol­ume loss per hour at 670 °C from oxi­da­tion. Many com­mer­cial­ly avail­able graphite gas­kets are much more sus­cep­ti­ble to oxidation.
The use of XP tech­nol­o­gy fur­ther min­i­mizes mass loss under iden­ti­cal con­di­tions to no more than 3%. This is pos­si­ble thanks to inor­gan­ic nanopar­ti­cles, which pro­vide com­pact, chem­i­cal­ly inert and tem­per­a­ture-resis­tant pro­tec­tion and enhance the oxi­da­tion prop­er­ties of the gas­ket material.

Intelligent stainless steel insert

novaphit users also ben­e­fit from the cor­ro­sion and acid-resis­tant stain­less steel expand­ed met­al insert. Unlike graphite gas­kets with tanged or flat met­al inserts, this insert is espe­cial­ly char­ac­ter­ized by its opti­mized sur­face pres­sure dis­tri­b­u­tion thanks to intel­li­gent insert geom­e­try with a three-dimen­sion­al lat­tice struc­ture. The advan­tage here is that sur­face pres­sure is increased both above the lat­tice struc­ture and in the cav­i­ties for max­i­mum seal­ing performance.

novamica: For high-temperature applications

novam­i­ca gas­kets made from opti­mized phl­o­go­pite mica are suit­able for use in extreme­ly high-tem­per­a­ture appli­ca­tions. For exam­ple, unlike mus­covite mica, which under­goes cal­ci­na­tion at 600 °C, phl­o­go­pite-based novam­i­ca gas­kets remain sta­ble up to 1,000 °C. This makes the mate­r­i­al extreme­ly tem­per­a­ture resis­tant and gives it its high chem­i­cal resistance.
The adapt­able and high­ly flex­i­ble mate­r­i­al is very easy to process and guar­an­tees reli­able seal­ing per­for­mance even with com­plex gas­ket geome­tries. Mica in com­bi­na­tion with an effec­tive binder sys­tem and expand­ed met­al inserts is the basis for a wide range of appli­ca­tions, e.g. in the process indus­try or auto­mo­tive sector.