Transition Joint Gasket Size: 2"-12" Mechanical Joint Gasket Size: 2"-48" Gasket materials compiles in all respects with physical requirements Specified in "ANSI/NSF61/AWWA/C111/A21.11.00, UI194. Superior Quality Synthetic Rubber materials like SBR/EPDM/Neoprene are used according to its application. Compound tested as per ASTM D2240. Specification: Shore Hardness Shore A: ASTM D2240 80 Tensile strength, in MPA, min: ASTM D412 10.3 Elonggation, @Break% min. ASTM D412 150 Compression Set, % ASTM D395 @70 C degree/22 hours Method B 20% Ozone Resistance 25 hrs/50pphm Ozone /40 C degree ASTM D1149 no cracks Oxygen Resistance 25 hrs