Gasket board mark АS
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Gasket board mark АS

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Board of mark  "АS" is used for sealing production which provide hermeticity between plain metal surfaces with reinforcement of drags  6,9-20,6 МPа (70-210 kg/sm2) in the following operating mediums  :
oil–with temperature 125°C;
water-with temperature to 100°C;
petrol–with temperature to 90°C;
It is produced in sheets. Size of sheets is agreed with buyer. 

Rate for mark  "AS":
Tech spec  5443-015-00278882-2007
Thickness, mm 1,0±0,12
Density,g/sm3, not less
Tensile strength in cross direction, МPа (kgs/mm2), not less: 15,7 (1,6)
Absorbability for 6 hours with full-immersion, % not more:

Linear deformation in cross direction after staying sample   in humidistat during 24 hours, %, not more 0,7
Elastic strain after unloading, %, not less 45,0
Ply separation of the board in dry condition and after staying in the water with temperature 20-25°C during 24 hours.  It should not have ply separation
Compressibility with load  6,9 МPа (70 kgs/sm2), %, not less 13
Moisture, % 12±2

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