Urethane Polyurethane O-Rings
Urethane, AU, EU, PU
Adiprene®, Millathane®, Vibrathane®
Polyurethane is an organic polymer. Polyurethanes are formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. Polyurethane is a widely used compound due to its superior strength, tear and abrasion resistance. Polyurethane also provides excellent permeation resistance.
Hundreds more specialty compounds available. Contact a Marco Sales Consultant or Engineer for more information.
|Marco CPD#||Base Material||Color||Duro (Shore A)||Relative Price||Typical Inventory Level||High Temp (F)||Low Temp (F)||Steam < 300 F||Steam < 400 F||Compression Set||Chemical & Solvents||Sunliight, Ozone, UV||Wear Abrasion||Permeation Vacuum||Petroleum Oils & Hydraulics||Fuels & Gas||Brake Fluids|
|1 = Great 2 = Good 3 = Fair 4 = Poor|
|High performance 70 durometer Polyurethane|
|High performance 90 durometer Polyurethane|
|General purpose 90 durometer Polyurethane|
|General purpose 70 durometer Polyurethane|
Service Temperature Range:
The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.
- Good hydraulic oil and gasoline resistance
- Resistant to pure aliphatic hydrocarbons (propane, butane, fuel)
- Resistance to mineral and silicone oils and greases
- Resistant to water, oxygen, ozone and aging
- Excellent tear and abrasion resistance
- Available in multiple types and compounds to meet performance and cost requirements
- Not compatible with acids, ketones, esters, ethers, alcohols, glycols
- Hot water, steam, alkalis and amines