Flexible graphite main attributes: resistance to heat, fire, corrosion and aggressive chemicals make it the most universally applicable sealing solution on the market today Sterling Seal & Supply style 7000T products provide a tight seal after repeated exposure to the harshest environments Flexible graphite achieves optimal results where other materials fail to a wide range of temperatures including a minimum of [-400 Degrees F (-240 Degrees C), and maximum of +850 Degrees F (+454 Degrees C), (in atmosphere)] [+1200 Degrees F (+650 Degrees C) to +5432 Degrees F (+3000 Degrees C) in continuous reduction or inert media] seals easily under moderate bolt loads and reduces gasket damage in handling and installation Homogeneous graphite sheets are manufactured from high carbon content (> 98 percent ) natural graphite Ideal material for sealing applications like flange gaskets and Valve stuffing boxes External performance tests and approvals ROTT - room temperature tightness Test ARLA - Aged relaxation leakage Test (TTRL) hats - high temperature tensile relaxation screen Test HOTT - high temperature tightness Test Superior seal ability under low flange loads, high surface conformity to irregularities, unlimited shelf life are a few more major benefits of style 7000T Style 7000 eliminates potential fluid from binder residue 7000T is made with grafoil grade 7000 flexible graphite mechanically bonded to both faces of a 0004 thick flat or mesh 316 stainless steel insert Please be advised to wear gloves when handling this product, some styles with inserts can be sharp when cut Sterling Seal & Supply of NJ style 7000T made of expanded flexible graphite have proven their long-term reliability under extreme operating conditions over the course of many years While maintaining an effective seal, Sterling Seal & Supply Styles 7000, 7000I & 7000T exhibit virtually no creep relaxation As a result, the need for periodic bolt tightening is greatly reduced