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: 12 mm Nominal Inside Dia., 17 mm Nominal Outside Dia., 17 mm Actual Outside Dia., 50 PK O-Ring: 156, 4 1/4 in Nominal Inside Dia., 4 7/16 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 469, 20 in Nominal Inside Dia., 20 1/2 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 041, 3 in Nominal Inside Dia., 3 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 34 mm Nominal Inside Dia., 46 mm Nominal Outside Dia., 46 mm Actual Outside Dia., 5 PK O-Ring: 50 mm Nominal Inside Dia., 62 mm Nominal Outside Dia., 62 mm Actual Outside Dia., 75 Shore A O-Ring: 214, 1 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 70 Shore A, Red, Inch, 2 PK O-Ring: 255, 5 5/8 in Nominal Inside Dia., 5 7/8 in Nominal Outside Dia., 75 Shore A, Black, 2 PK O-Ring: 120 mm Nominal Inside Dia., 128 mm Nominal Outside Dia., 128 mm Actual Outside Dia., 5 PK O-Ring: 52 mm Nominal Inside Dia., 56 mm Nominal Outside Dia., 56 mm Actual Outside Dia., 5 PK O-Ring: 28 mm Nominal Inside Dia., 35 mm Nominal Outside Dia., 35 mm Actual Outside Dia., 25 PK O-Ring: 006, 1/8 in Nominal Inside Dia., 1/4 in Nominal Outside Dia., 0.254 in Actual Outside Dia. Backup Ring, Contoured: Buna N, For 331, 0.076 in Thick, 0.262 in Radius, 50 PK O-Ring: 62 mm Nominal Inside Dia., 65 mm Nominal Outside Dia., 65 mm Actual Outside Dia., Std, 50 PK O-Ring: 42 mm Nominal Inside Dia., 51 mm Nominal Outside Dia., 51 mm Actual Outside Dia., 10 PK O-Ring: 40 mm Nominal Inside Dia., 46 mm Nominal Outside Dia., 46 mm Actual Outside Dia., 25 PK O-Ring: 214, 1 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 22 mm Nominal Inside Dia., 26 mm Nominal Outside Dia., 26 mm Actual Outside Dia., Std, 50 PK O-Ring: 87 mm Nominal Inside Dia., 91 mm Nominal Outside Dia., 91 mm Actual Outside Dia., 10 PK O-Ring: 17.8 mm Nominal Inside Dia., 22.6 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK ◀◀ ◀ ▶ ▶▶
