... is better.Anticorrosion, prevent aging, strong applicability and long use life.Wide size scope, nominal diameter of DN50-2400.Advantage of ... different rubber materials).2, non-blocking, sealing well.3, long life, trouble-free, maintenance-free.4, no moving parts and ... to meet customer needs.8, ease of installation, low cost, running cost is small.Specification:Two types: XH41 flanged type and XH81 ...