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: 6.4 mm Nominal Inside Dia., 10.2 mm Nominal Outside Dia., 10.2 mm Actual Outside Dia., 50 PK O-Ring: 5 mm Nominal Inside Dia., 9 mm Nominal Outside Dia., 9 mm Actual Outside Dia., Black, 50 PK O-Ring: 20.5 mm Nominal Inside Dia., 23.5 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 5.5 mm Nominal Inside Dia., 8.5 mm Nominal Outside Dia., 8.5 mm Actual Outside Dia., 50 PK O-Ring: 3.4 mm Nominal Inside Dia., 7.2 mm Nominal Outside Dia., 7.2 mm Actual Outside Dia., 50 PK O-Ring: 004, 5/64 in Nominal Inside Dia., 13/64 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 55 mm Nominal Inside Dia., 59 mm Nominal Outside Dia., 59 mm Actual Outside Dia., 5 PK O-Ring: 135 mm Nominal Inside Dia., 145 mm Nominal Outside Dia., 145 mm Actual Outside Dia., Black O-Ring: 256, 5 3/4 in Nominal Inside Dia., 6 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 011, 5/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 25 mm Nominal Inside Dia., 31 mm Nominal Outside Dia., 31 mm Actual Outside Dia., Std, 50 PK O-Ring: 23 mm Nominal Inside Dia., 26 mm Nominal Outside Dia., 26 mm Actual Outside Dia., 100 PK O-Ring: 26 mm Nominal Inside Dia., 30 mm Nominal Outside Dia., 30 mm Actual Outside Dia., Std, 50 PK O-Ring: 341, 3 1/2 in Nominal Inside Dia., 3 7/8 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 208, 5/8 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 10 PK O-Ring: 22.5 mm Nominal Inside Dia., 24.5 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 130 mm Nominal Inside Dia., 135 mm Nominal Outside Dia., 135 mm Actual Outside Dia., Black O-Ring: 447, 9 in Nominal Inside Dia., 9 1/2 in Nominal Outside Dia., 70 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 044, 0.049 in Thick, 0.087 in Radius, 50 PK O-Ring: 50 mm Nominal Inside Dia., 54 mm Nominal Outside Dia., 54 mm Actual Outside Dia., 25 PK ◀◀ ◀ ▶ ▶▶
