Made of a tough elastomeric PVC compound that meets the requirements of ASTM No. D5926, are resistant to chemicals, ultraviolet rays, fungus growth, and normal sewer gases. Stainless steel clamps are corrosion-resistant and rust-proof. For use in sewer and drain, water, and vent piping. Maximum working pressure 4.3 P.S.I. (29.6 kPa); Maximum operating temperature: 140 deg. F. nonconsistent. A = the inside diameter (I.D.) of side No. 1. B = the inside diameter (I.D.) of side No. 2. C = the length of the actual coupling, end to end.