Home Company Products Contacts Site map

products

James Walker® Gaskets & Jointings > Non-asbestos sheet jointings



  Non-asbestos sheet jointings
Centurion®
DESCRIPTION
Centurion® is a high performance sheet jointing, based on glass and aramid fibres with a nitrile rubber (NBR) binder. An anti-stick finish to both surfaces is supplied as standard.
PRIME FEATURES
• Well proven on industrial plants worldwide.
• Chemically and thermally stable for duties up to 440°C.
• Recommended for most fluid media.
• Non-pigmented.
SPECIFICATION
Meets the requirements of BS7531 Grade X.
 
PHYSICAL PROPERTIES
(Typical values for 1.5mm thick material)
Density, Mg/m3 1.7
Transverse tensile strength, MPa 9.0 (ASTM F152)
Residual stress, MPa 27.0 (BS7531)
Compressibility, % 9.0 (BS7531)
Recovery, % 60.0 (ASTM F36J)
Gas permeability, ml/min <1.0 (BS7531)
Leachable chloride ion content, ppm <100
 
FLUID IMMERSION PROPERTIES
ASTM oil 3, % thickness increase, 5h @ 150°C 5.0 (BS7531)
ASTM fuel B, % thickness increase, 5h @ RT 7.0 (ASTM F146)
Water, % thickness increase, 5h @ 100°C 5.0 (BS7531)
 
SERVICE CAPABILITY GRAPHS
CENTURION, up to and including 0.75mm thickness: maximum
working pressure against temperature guidelines.
CENTURION, up to and including 1.0mm thickness: maximum
working pressure against temperature guidelines.
 
CENTURION, up to and including 1.5mm thickness: maximum
working pressure against temperature guidelines.
CENTURION, up to and including 2.0mm thickness: maximum
working pressure against temperature guidelines.
 
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 (click here for advice on gasket use).