YouQi supplies high‑performance PTFE diaphragms and EPDM rubber diaphragms, critical industrial sealing gaskets manufactured in Shanghai, China. Crafted via hot‑press molding, these sealing parts adopt premium EPDM rubber and PTFE materials, available in black and red with hardness ranging from 30‑90 Shore. Boasting prominent oil‑resistant property, they deliver stable, durable sealing performance under complex working conditions.

Our diaphragms cover both standard and non‑standard specifications with fully customized models to match diverse client requirements. Widely applied for valve sealing, cylinder, pipeline, automotive, engine and cooling system sealing assemblies. As reliable sealing components, they effectively prevent medium leakage for mechanical equipment. Custom dimensions and technical parameters are supported to solve your individualized sealing challenges.