Rubber and Polyurethane Engineering

Rubber & Polyurethane

Neoprene, Nitrile, EPDM, Viton, natural are all commonly known grades of rubber. This page is intended to illustrate the wide range of grades available and the many variations they have. All of the product areas listed on the left hand menu are manufactured using one of these compounds. This list is by no means definitive and should not be used as a complete solution, but should illustrate as a guide to the main compound choices available to suit your requirement whether you need a moulding, a seal or an expansion joint.

Introduction to Rubber Grades

For Rubber Sheeting Spec Sheets - Click Here

Compound Suitability Chart

Application	Natural/SBR	Neoprene	Nitrile	EPDM	Butyl	Hypalon
Temp Cont (ºC)	75	95	100	130		130
Temp Int (ºC)	105	125	130	150		160
Petrol	Poor	Poor	Good	Poor	Poor	Poor
Lubricating Oils	Poor	Fair	Good	Poor	Poor	Fair
Acid	Fair	Fair	Good	Excellent	Excellent	Excellent
Alkali	Fair	Fair	Fair	Good	Excellent	Excellent
Abrasion Resistance	Excellent	Good	Good	Good	Good	Good
Tear Strength	Good	Good	Good	Fair	Good	Fair
Impact Resistance	Excellent	Good	Fair	Good	Good	Good
Resilience	Excellent	Good	Good	Good	Fair	Good
Impermeable to Gases	Fair	Good	Good	Good	Excellent	Excellent
Compression Set	Good	Good	Good	Fair	Fair	Fair
Physical Strength	Excellent	Good	Good	Good	N/A	Good
Ozone & Weathering	Poor	Good	Fair	Excellent	N/A	Excellent
Oxidation	Fair	Good	Good	Excellent	N/A	Excellent
Electrical Strength	Excellent	Good	Poor	Excellent	N/A	Good
Water Resistance	Good	Excellent	Good	Excellent	N/A	Good

Application	Silicone	Viton®	Polyurethane	Santo-prene®	Therban®	Fluor-silicone
Temp Cont (ºC)	205	205		110	125	180
Temp Int (ºC)	300	300		115	160	200
Petrol	Poor	Excellent		Poor	N/A	Fair
Lubricating Oils	Good	Excellent		Good	Good	Excellent
Acid	Fair	Good		Good	Good	Good
Alkali	Fair	Fair		Good	Good	Fair
Abrasion Resistance	Fair	Good		Good	Excellent	Poor
Tear Strength	Poor	Fair		Good	Good	Poor
Impact Resistance	Fair	Fair		Good	Fair	Fair
Resilience	Poor	Fair		Good	Fair	Fair
Impermeable to Gases	Poor	Excellent		Fair	Good	Poor
Compression Set	Good	Good		Fair	Good	Good
Physical Strength	Poor	Good		Good	Good	Poor
Ozone & Weathering	Excellent	Excellent		Good	Good	Excellent
Oxidation	Excellent	Excellent		Good	Excellent	Excellent
Electrical Strength	Excellent	Good		Excellent	Poor	Excellent
Water Resistance	Good	Good		Good	Good	Good

Viton is a registered trademark of Dupont
Santoprene is a registered trademark of Monsanto
Therban is a registered trademark of Bayer

PAR manufacture and supply items made from all of these compounds,
please contact your nearest sales office for further information