Jonal Laboratories
High Temperature Silicone Rubber Seals & O-Rings for Aerospace
img01
Design Assistance
Chemistry
Fluorosilicone
Fluorocarbon
Urethane (Castable, Millable, Foam)
Nitriles
Chloroprene
Butyl
Ethylene-propylene
Natural Rubber
Styrene-butadiene
Laboratory
Quality
img02

Urethane (Castable, Millable, Foam)

Urethane rubber are prepared by the reaction of a long chain polyol with a diisocyanate. The polymers are based on either a polyether or a polyester backbone. Urethane is outstanding over most other elastomers in abrasion resistance and tensile strength.

Urethane rubber offers superior performance in hydraulic situations, where high pressures, shock loads or abrasion is anticipated. They also possess chemical compatibility similar to that of nitrile, offering good resistance to petroleum-based oils, hydrocarbon fuels, hydraulic fluids, oxidizing effects of ozone, aging effects of sunlight and good tear resistance. Good low temperature flexibility  is also a feature of many urethane rubbers.

Typical uses are seals for high hydraulic pressure situations where parts are subject to wear and abrasion. Also used for rolls, seals, bumpers, shock absorbers, rings and wipers.