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Latest News...

Rubber in Engineering Group @ Clwyd - Sep 2018

Clwyd welcomed the Rubber in Engineering Group on Friday 21st September, more than 20 more

Polymer Types - BR - Polybutadiene...

Clwyd reference BR
ASTM classification BR

Polybutadiene rubber

Typical applications Winter tyres

Good tensile strength
Good low temperature performance


Poor resistance to oils and non-polar solvents
Poor steam resistance
Poor ozone and weathering resistance
Reduced resilience and abrasion resistance cf. NR and SBR

Available hardness range (Shore A) 40 – 90
Upper continuous service temp. (°C) 100
Min. temp. for sealing applications (°C) -60
Minimum non-brittle  temp.  (°C) -90
Tensile strength (up to) 20 MPa
Elongation at break (up to) 550%

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