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Used for superheated and saturated steam, gases, alkalis, mild acids, oils, solvents and most chemicals.



Related Terms

NITRILE BOUND COMPRESSED ASBESTOS FIBRE GASKET

Used for oils, solvents and petrols. Used in refineries as it is resistant to aromatic hydrocarbons.

WIRE REINFORCED COMPRESSED ASBESTOS FIBRE GASKET

Usually with a Graphite Surface. Used for areas of severe physical conditions where high temperatures and pressures exist. Suitable for diesel exhaust manifolds and cylinder head joints where vibration can be a problem.

INSULATING FLANGE

An insulating device usually a gasket and washers placed between the flanges to prevent electrical continuity between hose or pipeline connections.

CORK - RUBBER JOINTING

Hard Types

Used for petroleum fuels, oils and lubricants

Medium Hardness Types

Used for solvents, greases, oils refrigerants, coolants, water and air as well as lubricating and numeral oils.

Soft Types

Used in a wide range of general purpose applications including minor automotive Rocker cover joints

NON ASBESTOS COMPRESSED FIBRE JOINTING

This jointing is used where asbestos in any form is acceptable and would be used for sealing against steam, water, oils, gases, dilute acids and alkalis. It can also be provided with a fine steel mesh for applications requiring greater strength.

P.T.F.E. GASKET

The extraordinary characteristics of P.T.F.E. have already been used in many applications. It can replace materials such as asbestos, glass, ceramic and rubber for some applications.

Temperature Range: 240°C to + 315°C

Operating Pressure:- Vacuum to 210 bar.

Factors which affect Sealing Characteristics

To enable a gasket to accommodate unevenness and surface roughness, it needs to be compressible within the contours resolved. At high temperatures not only is there a reduction in the force exerted by the clamping bolts, due to thermal expansion, but also the polymeric binding of the gasket material undergoes a chemical change and the gasket relaxes. These processes must not reduce the pressure between the gasket and the surface to which it is sealing as the gasket can be damaged by the internal pressure. This property of a gasket is determined by the British Standards Relaxation Test.

GASKET

A rope used to secure a sail (particularly the topsail) when stowed

INFLATABLE GASKET

A gasket whose seal is activated by inflation with compressed air.

CAF

Abbreviation for 'Currency Adjustment Factor.' A charge, expressed as a percentage of a base rate, that is applied to compensate ocean carriers of currency uctuations.

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