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    Water / Sanitation NSF/ANSI 61 Gaskets – Durlon® 7910

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    Application:

    DURLON® 7910 is a good quality general service gasket for applications where an NSF/ANSI 61 certified gasket material is required. It is suitable for potable water, steam, oil, water, mild alkalis and acids, hydrocarbons and solvents; and for applications in the water treatment and reclamation, wastewater and plumbing industries.

    Composition:

    DURLON® 7910 is a compressed fibre sheet gasket material that was specially developed to meet the requirement of NSF/ANSI 61 for potable water applications. It contains high strength mineral fibers bonded with nitrile (NBR) synthetic rubber.

    Anti-Stick Properties:

    Much effort has gone into improving the anti-stick release agents of all compressed Durlon® products. All Durlon® compressed gasket materials have passed the MIL-G-24696B Navy Adhesion Test (366°F/48hrs).

     

    Typical Physical Properties:

    Colour White
    Fibre System Aramid/Inorganic
    Binder NBR
    Temperature
    Min
    Max
    Max, continuous
    -73°C (-100°F)
    371°C (700°F)
    260°C (500°F)
    Pressure, max, bar (psi) 83 (1,200)
    Density, g/cc (lbs/ft3) 1.7 (106)
    Compressibility, %
    ASTM F36
    9-20
    Recovery, %
    ASTM F36
    40
    Creep Relaxation, %
    ASTM F38
    20
    Tensile Strength across grain,
    ASTM F152, MPa (psi)
    10.3 (1,500)
    Fluid Resistance, ASTM F146
    IRM 903 Oil 5 hrs. at 300°F
    Thickness Increase, %
    Weight Increase, %
    ASTM Fuel B 5 hrs. at 70°F
    Thickness Increase, %
    Weight Increase, %
    0-15
    15
    0-10
    12
    Sealability, ml/hr
    ASTM 2378 (Nitrogen)
    0.05
     Gasket Factors
    m
    Y, psi (MPa)
    Gb
    a
    Gs, psi (MPa)
    1/16″                 1/18″
    1.5                     1.5
    2,416 (16.7)     3,576 (24.7)
    502 (3.5)          736 (5.1)
    0.289                0.237
    0.001 (0)          9.1 (0.06)
    Flexibility
    ASTM F147
    10x

    *ASTM Testing