Compressed Non-Asbestos Fiber Sheets are rolled and vulcanized sheet type gasket materials, in which special rubber binders and a small amount of filler material are mixed with organic and inorganic fibers.

These are suitable to be used as Non-asbestos gaskets for pipe flanges and equipment in various industries. The adaptability of these sheets for water apparatus has been confirmed based on JIS S 3200-7.

Description

Design Data

• Recommended tightening stress
  Tightening stress is defined as the pressure required under standard conditions without consideration to the opening force due to internal fluid.

   

  Fluid	Recommended tightening stress (MPa)
  Liquid	25.5
  Gas	40.0

• Available ranges
  Temperature and pressure classifications show individual service limits.

   

  VALQUA No.	Temperature (°C)	Pressure (MPa)
  		Water based	Oil based(2)	Gas
  6500 / 6500AC	-50～183	3.0	3.0	1.0
  6502 / 6503 / 6503AC	-50～214	3.0	3.0	1.0

  Notes:
  (1) For service conditions exceeding 100°C, please consult us.
  (2) Regarding oil gas, solvent and corrosive fluid, separate consultation is required.

• m,y values
  The m, y values for Compressed Fiber Sheets defined in Appendix G of JIS B 8265 can be applied to the m, y values of Compressed Non-Asbestos Fiber Sheets.

   

  Thickness (mm)	Gasket factor “m”	Minimum design seating stress “y”(N/mm2)
  3.0	2.00	11.0
  1.5	2.75	25.5
  1.0	3.50	44.8