ORING URETHANE

DESCRIPTION

O-rings are the most common and cost-effective sealing elements available. They seal over a wide range of pressure, temperature and tolerance. They are an excellent option where space limitations are a concern. And with proper hardware design, o-rings can seal a wide range of pressures from low vacuum up to several thousand PSI. O-rings are available in a wide range of elastomers as well as PTFE. 

Polyurethane (AU, EU): Polyurethane elastomers, as a class, have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. Permeability is good and comparable with butyl. 

Urethane o-rings are readily available in 70 and 90 durometer. 

SEAL INFORMATION

Chemical Resistance:

•  PURE ALIPHATIC HYDROCARBONS (PROPANE, BUTANE).
•  MINERAL OIL AND GREASE.
•  SILICONE OIL AND GREASE.
•  WATER UP TO 125F (HYDROLYSIS-RESISTANT COMPOUNDS CAN RESIST UP TO 180F).

Not compatible with:

•  KETONES, ESTERS, ETHERS, ALCOHOL, GLYCOLS.
•  HYT WATER, STEAM, ALKALIS, AMINES, ACIDS.

Durometer (Shore A): 70 

Temperature Range (F): -40 TO 180 

Max Pressure (psi): 1,450 DEPENDING ON APPLICATION 

Max Pressure (psi) WITH BACKUP RINGS: 5,000 DEPENDING ON APPLICATION 

Max Speed (ft/sec): 1.5 

Mating Surface Roughness - Ra (µin) - DYNAMIC: 16 MAX 

Mating Surface Roughness - Ra (µin) - STATIC: 32 MAX 

Part Number Definition (Inch): (AS568 3-DIGIT NUMBER)U70 

Additional Part Number Definition (Inch): 4"ID X .210"CS = 345U70