Butyl Rubber Gasket
Butyl Rubber Gasket.
A vibration damping specialist with excellent chemical and weathering resistance, suited to applications where shock absorption matters as much as the seal itself.
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Material |
Isobutylene isoprene copolymer (IIR) |
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Hardness |
60° Shore A (+/- 5°) |
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Temperature range |
-40°C to +130°C |
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Tensile strength |
8.0 MPa |
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Elongation at break |
400% min |
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Abrasion resistance |
Moderate |
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Resilience |
Low |
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Specific gravity |
1.3 |
Every gasket is cut to order, from single prototypes through to full production runs. Send us your drawing or dimensions and we will come back with a quotation.
Why choose butyl rubber?
Butyl stands apart from other elastomers because of its very low resilience. Where most rubbers spring back quickly, butyl absorbs energy, which makes it the material of choice for vibration damping and shock absorption applications. If your gasket needs to quieten movement between components as well as seal them, butyl does both jobs at once.
Its chemical profile is strong too, with excellent resistance to water and alkalis, very good resistance to acids and good resistance to ketones. Excellent ozone resistance and ageing properties mean it holds its performance over long service lives outdoors, and the operating range of -40°C to +130°C is the widest of our EPDM and butyl grades. At 60° Shore A it is also softer than our EPDM gaskets, allowing it to conform to lower quality or uneven flange faces.
Butyl offers poor resistance to oils, fuels and petroleum based solvents, so for those applications nitrile remains the better option.
For further information on our services or to discuss your requirements, contact us today.
