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: 170 mm Nominal Inside Dia., 178 mm Nominal Outside Dia., 178 mm Actual Outside Dia., 2 PK O-Ring: 104, 1/8 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 90 Shore A, Black, 50 PK O-Ring: 29.4 mm Nominal Inside Dia., 35.6 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 70 mm Nominal Inside Dia., 80 mm Nominal Outside Dia., 80 mm Actual Outside Dia., 5 PK O-Ring: 474, 25 in Nominal Inside Dia., 25 1/2 in Nominal Outside Dia., 25.49 in Actual Outside Dia. Backup Ring, Contoured: Buna N, For 017, 0.049 in Thick, 0.087 in Radius, 100 PK O-Ring: 924, 1 3/4 in Nominal Inside Dia., 2 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 374, 9 1/4 in Nominal Inside Dia., 9 5/8 in Nominal Outside Dia., 70 Shore A, Red, 5 PK O-Ring: 259, 6 1/4 in Nominal Inside Dia., 6 1/2 in Nominal Outside Dia., 75 Shore A, Blue O-Ring: 6.8 mm Nominal Inside Dia., 10.31 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 289.5 mm Nominal Inside Dia., 306.3 mm Nominal Outside Dia., 306.3 mm Actual Outside Dia. O-Ring: 121, 1 1/16 in Nominal Inside Dia., 1 1/4 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 204, 3/8 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 014, 1/2 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 75 Shore A, Black, Inch, 25 PK O-Ring: 462, 16 1/2 in Nominal Inside Dia., 17 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 36.2 mm Nominal Inside Dia., 42.2 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 36 mm Nominal Inside Dia., 46 mm Nominal Outside Dia., 46 mm Actual Outside Dia., 2 PK O-Ring: 47 mm Nominal Inside Dia., 55 mm Nominal Outside Dia., 55 mm Actual Outside Dia., 75 Shore A O-Ring: 205 mm Nominal Inside Dia., 211 mm Nominal Outside Dia., 211 mm Actual Outside Dia., 2 PK O-Ring: 017, 11/16 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Black, 100 PK ◀◀ ◀ ▶ ▶▶
