Graphite Sheet Gaskets Grafilit SP

MATERIAL

Gasket material with excellent creep, strength, chemical stability and high tightness. Graphite itself or laminated with flat / tanged stainless steel insertion is used as a temperature and chemical resistant gasket in chemical, petrochemical and many other industries.

PROPERTIES AND APPLICATION

GRAFILIT® SP is a gasket material which combines excellent properties of expanded graphite and the strength of stainless steel. This type of material features has very good strength and creep resistance, chemical stability and high tightness. Grafilit SP is used in the chemical and petrochemical industry, at high surface loads or high operating pressures.

BASIS

Flexible graphite sheets mechanically bonded to a tanged stainless-steel insertion (AISI 316; 0.1mm)

APPROVALS APPLIED FOR

BAM (oxigen), Germanischer Lloyd, DIN-DVGW (DIN 3535/6), DVGW KTW, Fire safe API 607, DVGW VP 401 (HTB)

TECHNICAL DATA

DATA Typical values for a thickness of 1.5 mm

DIMENSIONS OF STANDARD SHEET

CompressibilityASTM FA36%35
RecoveryASTM FA36%17
Stress resistance (16h, 300°C)DIN 52913Mpa49
Permeability to nitrogen (40bar, RT)DIN 35356mg/(s.m)<0.05
Ash content of graphiteDIN 51903%<1
Chloride contentFSA NMG 202ppm<50
Fluoride contentFSA NMG 203ppm<50
Density of the graphiteDIN 28090-2g/cm31.0
Compression modulusDIN 28090-2
At room temperature: Eksw%32
At elavated temperature: Ewsw/300°C%1.2
Percentage creep relaxationDIN 28090-2
At room temperature: Eksw%4.5
At elavated temperature: Ewsw/300°C%4.0
Recovery RDIN 28090-2mm0.086
Operating conditions
Continuous use max. temperature*
Air or oxidizing atmosphere°C/°F450/842
Reducing or inert atmosphere°C/°F700/1292
Continuous use min. temperature*°C/°F-200/-328
Continuous use max. pressure*bar/psi200/2900

* Service limits are recommended for proper sealing conditions and gasket design.