SPREAD OF EXPANSION; NOMINAL DIAMETER: 6-5/8”; MAXIMUM WORKING PRESSURE: 150 MBAR; LENGTH: 6-1/2”; WORKING TEMPERATURE: 50 C; MATERIAL: NEOPRENE; ALLIED RUBBER AND SUPPLY COMPANY BRAND EXPANSION JOINT FOR AIR COMBUSTION, NEOPRENE REINFORCED WITH NYLON, 3/16” THICK, INTERIOR DIAMETER 6-5/8” AND 6-1/2” LONG; SUPPLIED WITH 4 HELICAL GEARS WORM SCREW; BRAND 1: ALLIED; N-PART 1: NEO-C