materials info...

Typical Material Chemical Compatability

	Natural Rubber	E.P.D.M.	Neoprene	Nitrile	HNBR	Flurucarbon E.G. Viton ®	Silicone	Flurosilicone
Air or Oxygen	Fair	Very Good	Good	Good	Very Good	Excellent	Very Good	Very Good
Dilute Acids or Alkalis	Very Good	Very Good	Very Good	Good	Good	Very Good	Fair	Fair
Commercial Petrols	NR	NR	Fair	Good	Very Good	Very Good	NR	Fair
Fuel and Diesel Oils	NR	NR	Fair	Good	Very Good	Very Good	NR	Fair
Mineral Lubricating Oil	NR	NR	Very Good	Very Good	Very Good	Very Good	Fair	Very Good
Synthetic Lubricating Oil	NR	NR	NR	Fair	Very Good	Fair	Good	Fair
Mineral Hydraulic Oil	NR	NR	NR	Very Good	Good	Very Good	NR	Good
Water/Glycol	Fair	Very Good	Fair	Very Good	Very Good	Very Good	Good	Good
Water in Oil Emulsions	NR	NR	NR	Fair	Very Good	Very Good	NR	Good
Oil in Water Emulsions	NR	NR	NR	Fair	Very Good	Very Good	Fair	Good
Phosphate Ester	NR	Good	NR	NR	NR	Good	Good	Fair
Water above 80c	NR	Excellent	Fair	Fair	Very Good	Fair	Excellent	Very Good
*N.R : NOT RECOMMENDED* The above information is provided as a guide only and suitability may be infuenced by other factors eg. Temp, Pressure etc. Specific recommendations will be given in response to full information

Typical Material Properties

	Natural Rubber	E.P.D.M.	Neoprene	Nitrile	HNBR	Flurucarbon E.G. Viton ®	Silicone	Flurosilicone
Max Continuous degrees C	70	120	100	120	150	200	200	180
Max Intermittent Temp degrees C	100	150	120	150	170	250	250	200
Low Temperature Flexibility	-50	-45	-40	-20	-15	-15	-60	-60
Hardness Range	30-95	40-95	30-95	40-95	50-95	50-98	20-80	40-80
Tensile Strength	Excellent	Good	Good	Good	Very Good	Very Good	Poor	Poor
Compression Set	Good	Good	Fair to Good	Good	Good	Good	Good	Good
Tear & Abrasion Resistance	Excellent	Good	Good	Good	Very Good	Good	Poor	Poor
Permeability to Gases	Poor	Fairly Low	Low	Low	Low	Very Low	Fairly Low	Fairly Low
Flame Resistance	Poor	Poor	Self Extinguishing	Poor	Poor	Self Extinguishing	Excellent	Excellent
Water Resistance below 80 degrees C	Very Good	Excellent	Good	Good	Good	Good	Good	Good
Ozone & Weathering	Poor	Outstanding	Good	Fair	Good	Outstanding	Outstanding	Outstanding
Cost Factor	1	1	2	2	6	15	4	40
The above information is provided as a guide only and suitability may be infuenced by other factors eg. Temp, Pressure etc. Specific recommendations will be given in response to full information. Viton® is a registered trademark of DuPont Dow Elastomers