DESCRIPTION
    Chieftain
    ®
    is James Walker’s premium grade universal sheet jointing. Its
    formulation contains an advanced carbon fibre material and a nitrile rubber
    (NBR) binder. An anti-stick finish to both surfaces is supplied as standard.
    PRIME FEATURES
    ●
    Carbon fibre for strength and stability.
    ●
    450°C maximum temperature.
    ●
    Outstanding chemical and steam resistance.
    ●
    User friendly – easy to cut, handle and remove from flanges.
    SPECIFICATIONS
    ●
    Easily meets the requirements of BS7531 Grade X.
    ●
    Suitable for ASME Class 300 flange ratings to at least 260°C.
    PHYSICAL PROPERTIES
    (Typical values for 1.5mm thick material)
    Density, Mg/m
    3
    1.6
    Transverse tensile strength, MPa 9.0 (ASTM F152)
    Residual stress, MPa 28.0 (BS7531)
    Compressibility, % 10.0 (BS7531)
    Recovery, % 60.0 (ASTM F36J)
    Flexibility after accelerated ageing Pass (BSF125)
    Gas permeability, ml/min <1.0 (BS7531)
    Leachable chloride ion content, ppm <100
    FLUID IMMERSION PROPERTIES
    ASTM oil 3, % thickness increase, 5h @ 150°C 6.0 (BS7531)
    Water, % thickness increase, 5h @ 100°C 5.0 (BS7531)
    ASTM fuel B, % thickness increase, 5h @ RT 8.0 (ASTM F146)
    Sodium hydroxide, % thickness increase, 10h @ 100°C
    13.0
    SERVICE CAPABILITY
    For applications falling into the green zone of each graph, the product may
    normally be used without consultation. In the amber zone we recommend
    that our technical services team be contacted for confirmation of suitability.
    If the pressure/temperature combination is in the red zone then we must be
    consulted before the product is used. Class lines refer to ASME B16.5.
    HOW SUPPLIED
    Precision cut gaskets to any shape, size and quantity. In sheets 2.0m x 1.5m,
    1.5m x 1.0m. Thicknesses: 0.5mm, 0.75mm, 1.0mm, 1.5mm, 2.0mm. Please
    note that 3.0mm is also available but is not recommended (see page 30 for
    advice on gasket use).
    100
    80
    60
    40
    20
    0
    100 200
    300
    TEMPERATURE ( C)
    PRESSURE (BAR)
    400
    0
    120
    140
    CLASS 600
    CLASS 400
    CLASS 300
    CLASS 150
    CHIEFTAIN, up to and including 0.75mm thickness: maximum
    working pressure against temperature guidelines.
    100
    80
    60
    40
    20
    0
    100 200
    300
    TEMPERATURE ( C)
    PRESSURE (BAR)
    400
    0
    120
    140
    CLASS 600
    CLASS 400
    CLASS 300
    CLASS 150
    CHIEFTAIN, up to and including 1.0mm thickness: maximum
    working pressure against temperature guidelines.
    100
    80
    60
    40
    20
    0
    100 200
    300
    TEMPERATURE ( C)
    PRESSURE (BAR)
    400
    0
    120
    140
    CLASS 600
    CLASS 400
    CLASS 300
    CLASS 150
    CHIEFTAIN, up to and including 1.5mm thickness: maximum
    working pressure against temperature guidelines.
    100
    80
    60
    40
    20
    0
    100 200 300
    TEMPERATURE ( C)
    PRESSURE (BAR)
    400
    0
    120
    CLASS 600
    CLASS 400
    CLASS 300
    CLASS 150
    CHIEFTAIN, up to and including 2.0mm thickness: maximum
    working pressure against temperature guidelines.
    SERVICE CAPABILITY GRAPHS
    CHIEFTAIN
    ®

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