Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering Oil-Film-Retaining S22 Double Lip Dust Proof Seal PU for Dusty Environments, Quality Assured S22 Double Lip PU Dust Proof Seal Wiper Seal Scraper Hydraulic Seal, Advanced S22 Double Lip Dust Proof Seal Wiper Seal Ring PU Seal Hydraulic Cylinder Seal for Cylinder Protection and so on.