Polyurethane

Polyurethane possesses outstanding abrasion resistance and tensile strength over most other O-ring elastomers.

Key Uses: Seals for high hydraulic pressures. Situations where highly stressed parts are subject to wear.

Polyurethane offers superior seal performance in hydraulic situations, where high pressures, shock loads, or abrasive contamination is anticipated. Polyurethane possesses chemical compatibility similar to that of Nitrile, offering good resistance to petroleum-based oils, hydrocarbon fuels and hydraulic fluids, the oxidizing effects of ozone, and the aging effects of sunlight. It also has good tear resistance.

General specifications (actual specifications may vary)

ASTM D1418 Designation

• AU, EU

Standard Colour

• Clear

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Unless specially compounded, at elevated temperatures Polyurethane begins to soften, losing its physical strength and chemical resistance advantages over other polymers. Tending to rapidly deteriorate when exposed to concentrated acids, ketones, esters, chlorinated and nitro hydrocarbons, Polyurethanes are also prone to hot water and steam degradation.

Please note: This Material Data Sheet section is to be used as a professional guide only. Eastern Seals (UK) Ltd may source their products from a variety of Quality Approved Suppliers and the data shown should not be relied upon by any purchaser without verification of material source.

ES REF	Colour	Temp Range	Shore	Notes	Data Sheet
PU70	CLEAR	-50°C to +80°C	70	POLYURETHANE 70 SHORE – PEROXIDE CURED	PU70
PU90	CLEAR	-50°C to +80°C	90	POLYURETHANE 90 SHORE	PU90