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: 154, 3 3/4 in Nominal Inside Dia., 3 15/16 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 126, 1 3/8 in Nominal Inside Dia., 1 9/16 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 207, 9/16 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 113, 9/16 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 425, 4 1/2 in Nominal Inside Dia., 5 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 63 mm Nominal Inside Dia., 66 mm Nominal Outside Dia., 66 mm Actual Outside Dia., Std, 25 PK O-Ring: 910, 5/8 in Nominal Outside Dia., 0.949 in Actual Outside Dia., 90 Shore A, Black, 100 PK O-Ring: 022, 1 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 50 PK O-Ring: 112, 1/2 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 55 Shore D, White, 25 PK O-Ring: 29 mm Nominal Inside Dia., 37 mm Nominal Outside Dia., 37 mm Actual Outside Dia., 25 PK O-Ring: 61 mm Nominal Inside Dia., 68 mm Nominal Outside Dia., 68 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 232, 0.05 in Thick, 0.174 in Radius, 50 PK O-Ring: 385, 16 in Nominal Inside Dia., 16 3/8 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 008, 3/16 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 27 mm Nominal Inside Dia., 31 mm Nominal Outside Dia., 31 mm Actual Outside Dia., Red, 5 PK O-Ring: 36 mm Nominal Inside Dia., 42 mm Nominal Outside Dia., 42 mm Actual Outside Dia., 10 PK O-Ring: 134, 1 7/8 in Nominal Inside Dia., 2 1/16 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 74 mm Nominal Inside Dia., 77 mm Nominal Outside Dia., 77 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 249, 0.05 in Thick, 0.174 in Radius, 25 PK O-Ring: 2.2 mm Nominal Inside Dia., 5.4 mm Nominal Outside Dia., 5.4 mm Actual Outside Dia., 10 PK ◀◀ ◀ ▶ ▶▶
