Rubber Expansion Joint Main Products: Single Sphere Rubber Expansion Joint, Twin Sphere Rubber Expansion Joint, spool Type Rubber Expansion Joint, Heavy Duty Rubber Expansion Joint with DIN, BS, EN, JIS, ANSI ... and Twin Sphere Union Rubber Expansion Joint with BSP or NPT Threaded. Size: DN32-DN3000 Material: EPDM, NBR, NR, Silicon. Pressure: PN6, PN10 ...