AS568-112 U90 EU Polyether Urethane 90 Duro O-Ring



$0.300

Qty Discounts Prices
10-2,199
$0.300
2,200-5,999
$0.232
6,000+
$0.162
  • Model: U90112
    Dimensions: 1/2"ID X 11/16"OD X 3/32"CS
    Actual: 0.487"ID X 0.103"CS
    Metric: 12.37mm ID X 2.62mm CS
  • PDF Data Sheet
  • 924 in Stock
Add to Cart:
Min Qty:  10
O-ring Size: 1/2"ID X 11/16"OD X 3/32"CS

 

Description: Polyurethane

Polyurethane rubber is notable for its combination of hardness with elasticity, outstanding abrasion resistance and tear strength. Elastomeric urethane rubber, not to be confused with thermoplastic polyurethane, may be either ether (EU) or ester (AU) base, with the latter being the far more common of the two. It is often referred to as the "millable gum" urethane. The ester based polymer is superior in resistance to abrasion and heat, while the ether based polymer has better flexibility at low temperatures. Polyurethane is a moderately expensive material whose use is usually limited to applications that require its outstanding physical properties. Common end use applications are industrial seals, industrial rolls, O-Rings, caster wheels, gaskets, shoe soles and conveyor belts. Peroxide is the most commonly employed cure system, but sulfur curing is also possible in the extremely complex vulcanization chemistry involved in polyurethanes.

Composition

Polyurethane

Physical Properties*

 
Excellent
Good
Fair
Poor
Abrasion resistance
Compression Set
Elongation
Flame resistance
Gas permeability
Low temperature flexibility
Tear resistance
Tensile strength

Chemical Resistance*

 
Excellent
Good
Fair
Poor
Air
Alcohols
Aldehydes
Concentrated acids
Concentrated Bases
Ethers
Ketones
LP Gas
Mineral oil
Oxidation
Ozone
Silicone Fluids
Steam
Sunlight
Weather

Operating Temperature

-40 to 180 °F
*Excellent, good, fair and poor are intended to serve as general guidelines only. Actual testing in the application environment is always recommended.

The O-ring Store is a distributor of O-rings, Seals, Seal Kits, Hydraulic Seals, and Pneumatic seals for many applications. We provide seal products to a variety of industries and customers such as: Automotive, Pool, Spa, Pump, Restaurant, Washer, Hydraulic, Coatings, construction equipment, material handling, industrial plant applications, farming, and logging equipment. We do not imply that these kits are original replacement parts.

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