Polyurethane (PU / PUR)

What is polyurethane (PU / PUR)?

Polyurethane (abbreviation PUR, in common usage also PU for short) is a synthetically produced elastic plastic similar to natural rubber.

AU (polyester urethane) is mostly used in vibration control technology. In addition, there is the waterproof type EU (polyether urethane). PU is a synthetic polymer and is used in two variants for vibration damping:

• cellular soft plastic
• solid soft plastic

PU has better chemical and mechanical resistance compared to NR (natural rubber). Due to the more complex processing – which is also reflected in the price – PU is rarely used as a 1:1 replacement to rubber-to-metal products. Due to their higher load-bearing capacity, combined with a longer service life, PU articles are used where classic rubber elements reach their limits.

The material PU is known under various brand names:

• Vulkollan ®
• Urepan ®
• Elastollan ®
• Adiprene ®
• …

The trade names are registered trademarks of the respective manufacturer.