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: 36 mm Nominal Inside Dia., 41 mm Nominal Outside Dia., 41 mm Actual Outside Dia., 5 PK O-Ring: 220, 1 3/8 in Nominal Inside Dia., 1 5/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 347, 4 1/4 in Nominal Inside Dia., 4 5/8 in Nominal Outside Dia., 90 Shore A, Black O-Ring: 020, 7/8 in Nominal Inside Dia., 1 in Nominal Outside Dia., 80 Shore A, Black, 10 PK O-Ring: 265, 7 3/4 in Nominal Inside Dia., 8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 217, 1 3/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 75 Shore A, Brown, 25 PK O-Ring: 351, 4 3/4 in Nominal Inside Dia., 5 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 112 mm Nominal Inside Dia., 118 mm Nominal Outside Dia., 118 mm Actual Outside Dia., 5 PK O-Ring: 229, 2 3/8 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 4.4 mm Nominal Inside Dia., 8 mm Nominal Outside Dia., 8 mm Actual Outside Dia., 50 PK O-Ring: 12 mm Nominal Inside Dia., 15 mm Nominal Outside Dia., 15 mm Actual Outside Dia., Std, 50 PK O-Ring: 74 mm Nominal Inside Dia., 84 mm Nominal Outside Dia., 84 mm Actual Outside Dia., 5 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 55 Shore D, White, 25 PK O-Ring: 010, 1/4 in Nominal Inside Dia., 3/8 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 427, 4 3/4 in Nominal Inside Dia., 5 1/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 188 mm Nominal Inside Dia., 192 mm Nominal Outside Dia., 192 mm Actual Outside Dia., 2 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 100 mm Nominal Inside Dia., 110.6 mm Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 119, 15/16 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 55 Shore D, White, 10 PK O-Ring Assortment: SAE, Buna N, 436 Pieces, 36 # of Sizes, 70 Shore A ◀◀ ◀ ▶ ▶▶