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: 10.1 mm Nominal Inside Dia., 13.3 mm Nominal Outside Dia., 75 Shore A, Black, Metric, 25 PK O-Ring: 016, 5/8 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 70 Shore A, Black, 25,000 PK O-Ring: 90 mm Nominal Inside Dia., 100.6 mm Nominal Outside Dia., 100.6 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 144, 0.053 in Thick, 0.129 in Radius, 50 PK O-Ring: 016, 5/8 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 169.5 mm Nominal Inside Dia., 175.5 mm Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 126, 1 3/8 in Nominal Inside Dia., 1 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 154, 3 3/4 in Nominal Inside Dia., 3 15/16 in Nominal Outside Dia., 70 Shore A, Red O-Ring: 426, 4 5/8 in Nominal Inside Dia., 5 1/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 37 mm Nominal Inside Dia., 49 mm Nominal Outside Dia., 49 mm Actual Outside Dia., 5 PK O-Ring: 59 mm Nominal Inside Dia., 65 mm Nominal Outside Dia., 65 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 355, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 112, 1/2 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 133, 1 13/16 in Nominal Inside Dia., 2 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 104, 1/8 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 0.318 in Actual Outside Dia. O-Ring: 438, 6 1/4 in Nominal Inside Dia., 6 3/4 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 192 mm Nominal Inside Dia., 198 mm Nominal Outside Dia., 198 mm Actual Outside Dia., 5 PK O-Ring: 48 mm Nominal Inside Dia., 52 mm Nominal Outside Dia., 52 mm Actual Outside Dia., Red, 10 PK O-Ring: 58 mm Nominal Inside Dia., 66 mm Nominal Outside Dia., 66 mm Actual Outside Dia., 20 PK O-Ring: 6.5 mm Nominal Inside Dia., 10.5 mm Nominal Outside Dia., 10.5 mm Actual Outside Dia., 50 PK ◀◀ ◀ ▶ ▶▶
