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: 256, 5 3/4 in Nominal Inside Dia., 6 in Nominal Outside Dia., 70 Shore A, Red, 10 PK O-Ring: 10 mm Nominal Inside Dia., 12 mm Nominal Outside Dia., 12 mm Actual Outside Dia., 100 PK O-Ring: 58 mm Nominal Inside Dia., 64 mm Nominal Outside Dia., 64 mm Actual Outside Dia., 2 PK O-Ring: 231, 2 5/8 in Nominal Inside Dia., 2 7/8 in Nominal Outside Dia., 85 Shore A O-Ring: 14 mm Nominal Inside Dia., 19 mm Nominal Outside Dia., 19 mm Actual Outside Dia., X, 10 PK O-Ring: 87 mm Nominal Inside Dia., 93 mm Nominal Outside Dia., 93 mm Actual Outside Dia., 10 PK O-Ring: 333, 2 1/2 in Nominal Inside Dia., 2 7/8 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 429, 5 in Nominal Inside Dia., 5 1/2 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 78 mm Nominal Inside Dia., 83 mm Nominal Outside Dia., 83 mm Actual Outside Dia., 2 PK Backup Ring, Contoured: Buna N, For 445, 0.117 in Thick, 0.344 in Radius, 5 PK O-Ring: 50 mm Nominal Inside Dia., 58 mm Nominal Outside Dia., 58 mm Actual Outside Dia., 75 Shore A O-Ring: 115, 11/16 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 50 Shore A, Black, 25 PK O-Ring: 128 mm Nominal Inside Dia., 138 mm Nominal Outside Dia., 138 mm Actual Outside Dia., Black O-Ring: 024, 1 1/8 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 55 Shore D, White, 10 PK Backup Ring, Contoured: Buna N, For 131, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 030, 1 5/8 in Nominal Inside Dia., 1 3/4 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 313, 11/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 70 Shore A, Red, 50 PK O-Ring: 12.8 mm Nominal Inside Dia., 17.6 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 100 PK O-Ring: 261, 6 3/4 in Nominal Inside Dia., 7 in Nominal Outside Dia., 7.012 in Actual Outside Dia. O-Ring: 217, 1 3/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 90 Shore A ◀◀ ◀ ▶ ▶▶
