O-RING; INTERIOR DIAMETER: 15.6 MM; OUTER DIAMETER: 19.16 MM; THICKNESS: 1.78MM; MATERIAL: BUNA ”N” NITRILE; SHORE HARDNESS: 70 "A" CIRCULAR SECTION TORICS. ACCORDING TO ASTM D2000-70B STANDARD. CLASSIFICATION 3CH720-A25 B14 E16 E36. CHARACTERISTICS AND TESTS: ACCORDING TO NOR MAS IRAM 113082 AND 113087. NOTE: TOLERANCE FOR CORD DIAMETER 1.78 (+/-0.08); APPLICATIONS: STATIC AND DYNAMIC USE OF VAIVEN; HYDRAULIC OR PNEUMATIC FOR COMPRESSED AIR. ADMISSIBLE TEMPERATURES IN CONTINUOUS SERVICES: -40º C TO 121º C.; FLUID FOR MINE RAL OILS, DERIVED FROM PETROLEUM, WATER AND FREON 12; BRAND 1: PARKER; N-PART 1: 2-016