PU the full name polyurethane is good material. Because it has many good property such as resistance abrade, good elastic etc. it is used widely such as PU hydraulic seals, PU shaft coupling, various PU seals, customize PU products etc. We can offer a wide range of PU hydraulic seals such DH, UN etc and all size are available. According to customer's sample, drawing, we also can customize various PU products.