Asbestos-free compression gasket 7900

  • Asbestos-free compression gasket 7900

Asbestos-free compression gasket 7900

This dyeing material is an economical alternative material in the case of insufficient working conditions and applications.

Product Details
Asbestos-free compression gasket 7900 is a general purpose economical compression gasket material plate for use in weak corrosion conditions of pipelines, equipment and licensed equipment where the medium is steam, hydrocarbons and refrigerants.
1. Good sealing performance greatly reduces the user's production cost
2. Multifunctional gasket properties are better than traditional economy film
3. Anti-viscosity reduces the cleaning time of sealing surface
4. Good compressibility and resilience to ensure its good sealing.
Asbestos-free compression gasket 7900 contains high strength aramid fibre and its adhesive is high quality nitrile butadiene rubber (NBR)
Viscosity resistance:
All compression gasket materials have done a lot of work in developing adhesive interpreters with superior anti-viscosity properties. All compression gasket materials successfully passed the MIL-G-24696B300℉/48hrs naval facility adhesion test.
ASTM standard performance is measured on 1/16 inch thickness, but ASTM F38 is measured on 1/32 inch thickness. These properties are for general reference only and cannot be used as a basis for acceptance or rejection. The data listed in this table are within the normal range of product performance and should not be used to prepare technical specifications or solely as a basis for design.
• When the public heat pressure is above Class300, please consult the representative office.
fibre Aramid fiber
Adhesive material Nitrile butadiene rubber(NBR)
Suitable fluid medium Steam, water, inert gas, oil, fuel, dilute acid, dilute base
density 1.7/cm³(106 lbs/ft³)
Tensile strength,ASTM F152 1700psi(11.7Mpa)
compressibility,ASTM F36 7-17%
Rebound rate,ASTM F36 40%
Applicable temperature range -100~70℉(-73~371℃)
Continuous operating temperature, maximum 500℉(260℃)
Fluid PH range (room temperature) 3-11
pressure,max 1200psig(83bar)
Fluid permeability resistance-ASTM F146  
IRM 903oil,5h/300℉/149℃  
thickness increase 0-15%
weight increase 15%
ASTM fuel B 5h/70℉/21℃  
thickness increase 0-10%
weight increase 12%
ASTM F37(fuelA) 0.03ml/HR
ASTM F37(Nitrogen gas) 0.5cc/min
Insulation breakdown voltage,ASTN D 149 11.0kv/mm(279v/mil)
DIN 3535 Gas permeability 0.05cc/min
Creep relaxation rate ASTM F 38 20%
flexibility 10x

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