O-RING; INTERIOR DIAMETER: 78.97 MM; OUTER DIAMETER: 86.03 MM; THICKNESS: 3.53MM; 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 IRAM RMAS 113082 AND 113087. NOTE: TOLERANCE FOR CORD DIAMETER; 3.53 (+/-0.10); APPLICATIONS: STATIC AND DYNAMIC USE OF VAIV EN; HYDRAULIC OR PNEUMATIC FOR COMPRESSED AIR. ADMISSIBLE TEMPERATURES IN CONTINUOUS SERVICES: -40º C TO 121º C.; MINERAL OIL FLUID, DERIVED FROM PETROLEUM, WATER AND FREON 12; BRAND 1: PARKER; N-PART 1: 2-235