Gaskets and Sheet Jointings

338C - Commercial Butyl (IIR)

Isobutylene-isoprene (butyl) rubber (IIR), black in colour, with a smooth finish as standard.

Typical applications
Duties where the extremely low permeability of butyl is required, together with its good resistance to phosphate esters, dilute acids and alkalis. Temperature range is -40°C to +120°C.

Physical properties
(Unless otherwise stated, values are typical)
Hardness, IRHD: 60
Density, Mg/m³ :  1.50
Tensile strength, MPa minimum:  5
Elongation at break, % minimum:  500

How supplied
Precision cut gaskets to any shape, size or quantity. Also in rolls and sheets, width: 1.4m. Thicknesses: 1.5mm, 3mm, 5mm, 6mm. Other dimensions can be supplied.