... years. Aim at working in different environment, the ball bearing for units made with POM, HDPE,PP, UPE, PTFE or PEEK ... seal installation 5.High quality ISO9001:20006.good service OEM servicePillow bolck bearing Pillow BlocksUCP200, NAP200, UKP200, UCPX00, UCP300, UCPA200, UCPH200Square Flange ...