O-Ring Kits Back to O-Ring Kits page ZEXEL KIT #225x19ZX 225 rings - 19 sizes Part Description Size Quantity R134a Manifold Cover - HNBR 7.8 x 1.9 10 pcs R134a Manifold Cover - HNBR 17.8 x 2.4 10 pcs R134a Manifold Cover - HNBR 21.8 x 2.4 10 pcs R134a 5/16 Liquid Groove Type - HNBR 6.8 x 1.9 10 pcs R134a 1/2 Discharge Groove Type - HNBR 10.8 x 2.4 10 pcs R134a 5/8 Suction Groove Type - HNBR 13.8 x 2.4 10 pcs R134a 5/16 Liquid Line - HNBR 6.7 x 1.6 10 pcs R134a 3/8 Liquid Line - HNBR 7.65 x 1.78 10 pcs R134a 1/2 Discharge Line - HNBR 10.82 x 1.78 10 pcs R134a 5/8 Suction Line - HNBR 14 x 1.8 10 pcs R134a 3/4 Suction Line - HNBR 17.17 x 1.8 10 pcs Pressure Switch - HNBR 8.8 x 1.9 10 pcs R12 5/16 Liquid Line - NBR 6.7 x 1.4 20 pcs R12 3/8 Liquid Line - NBR 7.65 x 1.78 20 pcs R12 1/2 Discharge Line - NBR 10.82 x 1.78 20 pcs R12 5/8 Suction Line - NBR 14 x 1.8 20 pcs R12 3/4 Suction Line - NBR 17.17 x 1.8 20 pcs R134a Compressor Body Shell - HNBR 108.5 x 2.4 10 pcs R134a Compressor Body Shell - NBR 112 x 3 5 pcs