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: 53 mm Nominal Inside Dia., 61 mm Nominal Outside Dia., 61 mm Actual Outside Dia., 75 Shore A O-Ring: 89.4 mm Nominal Inside Dia., 95.6 mm Nominal Outside Dia., 95.6 mm Actual Outside Dia., 5 PK O-Ring: 329, 2 in Nominal Inside Dia., 2 3/8 in Nominal Outside Dia., 70 Shore A, Black, 2,050 PK O-Ring: 90 mm Nominal Inside Dia., 96 mm Nominal Outside Dia., 96 mm Actual Outside Dia., Red, 2 PK O-Ring: 10.5 mm Nominal Inside Dia., 16.5 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 441, 0.117 in Thick, 0.344 in Radius, 10 PK O-Ring: 226, 2 in Nominal Inside Dia., 2 1/4 in Nominal Outside Dia., 2.262 in Actual Outside Dia. O-Ring: 227, 2 1/8 in Nominal Inside Dia., 2 3/8 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 11.5 mm Nominal Inside Dia., 15.5 mm Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 208.5 mm Nominal Inside Dia., 225.3 mm Nominal Outside Dia., 225.3 mm Actual Outside Dia. O-Ring: 145 mm Nominal Inside Dia., 152 mm Nominal Outside Dia., 152 mm Actual Outside Dia., 2 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 75 Shore A, Black, Inch, 10 PK O-Ring: 140 mm Nominal Inside Dia., 148 mm Nominal Outside Dia., 148 mm Actual Outside Dia., Red O-Ring: 024, 1 1/8 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 117, 13/16 in Nominal Inside Dia., 1 in Nominal Outside Dia., 80 Shore A, Black, 10 PK O-Ring: 10.3 mm Nominal Inside Dia., 15.1 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 50 PK Backup Ring, Contoured: Buna N, For 021, 0.049 in Thick, 0.087 in Radius, 100 PK O-Ring: 026, 1 1/4 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 75 Shore A, Black O-Ring: 57/64 in Nominal Inside Dia., 1.067 in Actual Outside Dia., 55 Shore D, White, 25 PK O-Ring: 25 mm Nominal Inside Dia., 29 mm Nominal Outside Dia., 29 mm Actual Outside Dia., Red, 5 PK ◀◀ ◀ ▶ ▶▶
