FOR HIGH THERMAL AND CHEMICAL LOAD; FOR PASSENGER CAR AIR-CONDITIONING SYSTEMS; HNBR RUBBER O-RING SEAL; INCLUDING: 20PCS 3MM I.D. DIAMETER 1MM; 20PCS 4MM I.D. DIAMETER 1MM; 20PCS 4.5MM I.D. DIAMETER 2MM; 20PCS 5MM I.D. DIAMETER 2MM; 20PCS 6MM I.D. DIAMETER 2MM; 20PCS 6MM I.D. DIAMETER 2.5MM; 20PCS 6MM I.D. DIAMETER 3MM; 20PCS 7MM I.D. DIAMETER 2MM; 20PCS 8MM I.D. DIAMETER 2MM; 5PCS 9MM I.D. DIAMETER 2MM; 5PCS 10MM I.D. DIAMETER 2MM; 5PCS 12MM I.D. DIAMETER 3MM; 5PCS 13MM I.D. DIAMETER 3MM; 5PCS 14MM I.D. DIAMETER 2.5MM; 5PCS 17MM I.D. DIAMETER 2.5MM; 5PCS 18MM I.D. DIAMETER 4MM; 5PCS 20MM I.D. DIAMETER 2MM; 5PCS 22MM I.D. DIAMETER 2MM