A.P. 6500 Hochdruck Flexible Graphite Characteristics Suitable for use at temperatures ranging from cryogenic up to approximately 9300F (5000C) Bulk density of graphite:    70 lbs per cu ft.    (1.1g/cm3) Specifications and Typical Analyses: Stainless steel foil details 1.5mm 2 SS layers 3.0mm 5 SS layers ASTM "m" factor 2.5 "y" factor 4000 Compression Recovery 4-5% Creep compression @ 3000C <4% Recovery @ 3000C 3-4% Sizes Available Stock sizes are 1.0 mm (1/32"), 1/5 mm (1/16") and 3.0 mm (1/8")thick 60" X 60". Special orders of 2.0 mm, and 4.0 mm are available. Applications For mechanical higly stressed sealed joints very high gasket pressure of up to 400 N/mm2 very high internal pressures of up to 250 bar. For gaskets meeting increased demands on operational reliability and sealablity, notably: bursting safety, fire safety hazardous service media such as inflammable gases and media listed under the German Clean Air Regulations, class 1. For gaskets in tongue-and-groove flanges meeting DIN and ANSI standards recommended as one-layer gaskets up to 1000 mm outside diameter; exceeding 1000 mm diameter as two-layer structures in segments it is recommended that the bolts be tightened up to the permitted limit. Examples of Applications Gaskets for chemical pipework and equipment with hot and/or corrosive media steam pipework in power stations heat transfer oil and heating facilities inspection glasses, pumps, fittings and vessels existing plants (after extended service). Properties High mechanical strength, e.g. very high compressive strength high bursting safety high rigidity Long-term stability of compressibility and recovery over a wide temperature range. No measurable cold or warm flow characteristics up to maximum permissible compressive stress Ease of handling, e.g. good resistance to buckling good scratch resistance antistick finish Suitability for use at temperatures ranging from cryogenic up to approximately 5000C, depending on installation and operating conditions, and the desired service life: in an inert atmosphere up to approximately 8000C (limits imposed by metal reinforcement) in steam up to approximately 5000C for applications in air at more than approximately 4000C, users should request our advice Good resistance to chemicals Absence of health hazard; asbestos-free No aging or embrittlement, owing to absence of adhesives or binders Excellent resistance to thermal shock Compressed thickness as a function of gasket pressure Back to Previous Page