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: 21 mm Nominal Inside Dia., 25 mm Nominal Outside Dia., 25 mm Actual Outside Dia., Std, 10 PK O-Ring: 395, 26 in Nominal Inside Dia., 26 3/8 in Nominal Outside Dia., 26.36 in Actual Outside Dia. O-Ring: 22 mm Nominal Inside Dia., 26 mm Nominal Outside Dia., 26 mm Actual Outside Dia., X, 5 PK O-Ring: 24 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., 75 Shore A O-Ring: 60 mm Nominal Inside Dia., 62 mm Nominal Outside Dia., 62 mm Actual Outside Dia., 10 PK O-Ring: 010, 1/4 in Nominal Inside Dia., 3/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 80 mm Nominal Inside Dia., 88 mm Nominal Outside Dia., 88 mm Actual Outside Dia., 10 PK Backup Ring, Contoured: Buna N, For 108, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 89.2 mm Nominal Inside Dia., 100.6 mm Nominal Outside Dia., 100.6 mm Actual Outside Dia. O-Ring: 901, 3/32 in Nominal Outside Dia., 0.297 in Actual Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 205, 7/16 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring Assortment: SAE, Viton(R), 461 Pieces, 33 # of Sizes, 75 Shore A O-Ring: 18.5 mm Nominal Inside Dia., 22.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 20 mm Nominal Inside Dia., 23 mm Nominal Outside Dia., 23 mm Actual Outside Dia., 100 PK O-Ring: 11.1 mm Nominal Inside Dia., 14.3 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 25 PK O-Ring: 217, 1 3/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 80 Shore A, Black, 10 PK O-Ring: 61.6 mm Nominal Inside Dia., 73 mm Nominal Outside Dia., 73 mm Actual Outside Dia., 5 PK O-Ring: 235, 3 1/8 in Nominal Inside Dia., 3 3/8 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 200 mm Nominal Inside Dia., 210 mm Nominal Outside Dia., 210 mm Actual Outside Dia., Black O-Ring: 003, 1/16 in Nominal Inside Dia., 3/16 in Nominal Outside Dia., 0.176 in Actual Outside Dia. ◀◀ ◀ ▶ ▶▶