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Anti-Corrosion Chemical Industry PTFE Lined Bellows Rubber Expansion Joint. PTFE Lined Construction: Features internal PTFE liner for strong corrosive media like acids and alkalis. Customizable Installation: Installation length and flange standards (DIN, ANSI, JIS) can be customized. Diverse Material Options: Rubber options include EPDM, NBR, CR, PTFE; Flanges in SS, CS, Ductile Iron. High Pressure Capacity: Rated for working pressures from PN6 to PN40. Comprehensive Certifications: Certified with ISO, TUV, Wras, CE, and Mtc standards. OEM and ODM Services: Full customization available from samples or designs with R&D support. 12 Months Warranty: Includes after-sales service support for all purchased units.