HPU is Hydrolysis Resistant Polyurethane. It has excellent resilience property which is perfectly suitable for hydraulic applications.
Wiper Seals also know as dust seals / scrapers / excluders. These seals are a vital part of hydraulic cylinder and prevent dust / debris / outside contamination to enter the cylinder. Wiper Seals from 3 mm to 850 mm diameter are manufactured as per temperature and fluid requirements.