DESCRIPTION

Sentinel

®

is James Walker’s

general purpose sheet jointing. It

comprises compressed aramid

fibres with nitrile rubber (NBR)

binder. An anti-stick finish to both

surfaces is supplied as standard.

PRIME FEATURES

●

Replaces CAF for most

industrial duties up to 400°C.

●

Suitable for wide range of

media.

●

Offers outstanding performance

for its class.

SPECIFICATION

●

Exceeds the property requirements of BS7531 Grade Y.

●

WRAS approved for use with hot and cold potable water up to 85°C.

PHYSICAL PROPERTIES

(Typical values for 1.5mm thick material)

Density, Mg/m

3

1.6

Transverse tensile strength, MPa 8.0 (ASTM F152)

Residual stress, MPa 25.0 (BS7531)

Compressibility, % 13.0 (BS7531)

Recovery, % 45.0 (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 6.0 (ASTM F146)

Water, % thickness increase, 5h @ 100°C 9.0 (BS7531)

SERVICE CAPABILITY

For applications falling into the green zone, 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).

SENTINEL

®

100

80

60

40

20

0

100 200

300

TEMPERATURE ( C)

PRESSURE (BAR)

400

CLASS 600

CLASS 400

CLASS 300

CLASS 150

SENTINEL, up to and including 2mm thickness: maximum working

pressure against temperature guidelines.