Polyurethane And Millable

 Polyurethane and Millable MILLABLE polyurethene is outstanding over most other O-ring elastomers in abrasion resistance and tensile strength.Key Use: Seals
for high hydraulic pressures. Situations where highly stressed parts
are subject to wear. Wiper seal for axially moving piston rods.Working Temperature Range: - 40 oF to + 175 oF. (Dry Heat Only).Features:
Millable Polyurethene offers superior seal performance in hydraulic
situations, where high pressure, shock loads, or abrasive contamination
is anticipated. At temperature up to approximately
158 oF, Millable Polyurethene possesses chemical compatibility similar
to that of Nitrile, offering good resistance to petroleum-based oils,
hydrocarbon fuels and hydraulics fluids, the oxidizing effects of
ozone, and the aging effects of sunlight.Good low temperature flexibility is also a feature of many Millable Polyurethene elastomer compositions.Limitations: Unless
specially compounded, at elevated temperature Millable Polyurethane
begins to soften, losing its physical strength and chemical resistance
advantages over other polymers.Tending to rapidly
deteriorate when exposed to concentrated acid, ketones, esters
chlorinated and nitro hydrocarbons, Millable Polyurethane is also prone
to hot water and steam digressions.