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: 323, 1 5/16 in Nominal Inside Dia., 1 11/16 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 334, 2 5/8 in Nominal Inside Dia., 3 in Nominal Outside Dia., 70 Shore A, Red, Inch, 50 PK O-Ring: 65 mm Nominal Inside Dia., 77 mm Nominal Outside Dia., 77 mm Actual Outside Dia., 2 PK O-Ring: 69.4 mm Nominal Inside Dia., 75.6 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 372, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 2 mm Nominal Inside Dia., 5 mm Nominal Outside Dia., 5 mm Actual Outside Dia., Black, 25 PK O-Ring: 37 mm Nominal Inside Dia., 43 mm Nominal Outside Dia., 43 mm Actual Outside Dia., 5 PK O-Ring: 7.1 mm Nominal Inside Dia., 10.3 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 109.4 mm Nominal Inside Dia., 115.6 mm Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 35 mm Nominal Inside Dia., 39 mm Nominal Outside Dia., 39 mm Actual Outside Dia., 50 PK O-Ring: 222, 1 1/2 in Nominal Inside Dia., 1 3/4 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 029, 1 1/2 in Nominal Inside Dia., 1 5/8 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 317, 15/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 55 mm Nominal Inside Dia., 63 mm Nominal Outside Dia., 63 mm Actual Outside Dia., 75 Shore A O-Ring: 4.6 mm Nominal Inside Dia., 9.4 mm Nominal Outside Dia., 9.4 mm Actual Outside Dia., 100 PK O-Ring: 017, 11/16 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 268, 0.05 in Thick, 0.174 in Radius, 5 PK O-Ring: 340, 3 3/8 in Nominal Inside Dia., 3 3/4 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 454, 12 1/2 in Nominal Inside Dia., 13 in Nominal Outside Dia., 70 Shore A, Black, 2 PK ◀◀ ◀ ▶ ▶▶
