Catalog Hardware O-Rings and O-Ring Kits O-rings and O-ring kits help ensure a tight seal to prevent air and fluid leaks in applications such as air conditioner repair or plumbing installations. ◀◀ ◀ ▶ ▶▶ O-Ring: 119, 15/16 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 60 Shore A, White, 5 PK O-Ring: 124 mm Nominal Inside Dia., 134 mm Nominal Outside Dia., 134 mm Actual Outside Dia., 2 PK O-Ring: 312, 5/8 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 253, 5 3/8 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 019, 13/16 in Nominal Inside Dia., 15/16 in Nominal Outside Dia., 75 Shore A, Black, 10 PK O-Ring: 42 mm Nominal Inside Dia., 52 mm Nominal Outside Dia., 52 mm Actual Outside Dia., 2 PK O-Ring: 39.6 mm Nominal Inside Dia., 44.4 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 024, 1 1/8 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 428, 4 7/8 in Nominal Inside Dia., 5 3/8 in Nominal Outside Dia., 70 Shore A, Red, 5 PK O-Ring: 211, 13/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 75 Shore A, Black, 10 PK O-Ring: 45 mm Nominal Inside Dia., 51 mm Nominal Outside Dia., 51 mm Actual Outside Dia., 25 PK O-Ring: 300 mm Nominal Inside Dia., 306 mm Nominal Outside Dia., 306 mm Actual Outside Dia., 5 PK Backup Ring: Hytrel, For 446, 0.099 in Thick, Orange, 5 PK Backup Ring, Contoured: Buna N, For 209, 0.05 in Thick, 0.174 in Radius, 100 PK O-Ring: 34 mm Nominal Inside Dia., 39 mm Nominal Outside Dia., 39 mm Actual Outside Dia., 25 PK O-Ring: 337, 3 in Nominal Inside Dia., 3 3/8 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 60 mm Nominal Inside Dia., 68 mm Nominal Outside Dia., 68 mm Actual Outside Dia., 20 PK O-Ring: 905, 5/16 in Nominal Outside Dia., 0.558 in Actual Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 216, 1 1/8 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 70 Shore A, Natural, 2 PK O-Ring: 359, 5 3/4 in Nominal Inside Dia., 6 1/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK ◀◀ ◀ ▶ ▶▶
