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: 12 mm Nominal Inside Dia., 16 mm Nominal Outside Dia., 16 mm Actual Outside Dia., 10 PK O-Ring: 12.6 mm Nominal Inside Dia., 17.4 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 85 mm Nominal Inside Dia., 93 mm Nominal Outside Dia., 93 mm Actual Outside Dia., 75 Shore A Backup Ring, Contoured: Buna N, For 456, 0.117 in Thick, 0.344 in Radius, 5 PK O-Ring: 29 mm Nominal Inside Dia., 36 mm Nominal Outside Dia., 36 mm Actual Outside Dia., 25 PK O-Ring: 393, 24 in Nominal Inside Dia., 24 3/8 in Nominal Outside Dia., 24.36 in Actual Outside Dia. O-Ring: 469, 20 in Nominal Inside Dia., 20 1/2 in Nominal Outside Dia., 90 Shore A, Black, Inch O-Ring: 236, 3 1/4 in Nominal Inside Dia., 3 1/2 in Nominal Outside Dia., 70 Shore A, Red, 25 PK O-Ring: 25/64 in Nominal Inside Dia., 0.496 in Actual Outside Dia., 55 Shore D, White, 50 PK Backup Ring: Hytrel, For 342, 0.065 in Thick, Orange, 10 PK O-Ring: 264, 7 1/2 in Nominal Inside Dia., 7 3/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 228 mm Nominal Inside Dia., 236 mm Nominal Outside Dia., 236 mm Actual Outside Dia., 2 PK O-Ring: 360, 5 7/8 in Nominal Inside Dia., 6 1/4 in Nominal Outside Dia., 90 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 367, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 175 mm Nominal Inside Dia., 183 mm Nominal Outside Dia., 183 mm Actual Outside Dia., 2 PK O-Ring: 14.1 mm Nominal Inside Dia., 17.3 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 75 Shore A, Black, Inch, 2 PK O-Ring: 458, 14 1/2 in Nominal Inside Dia., 15 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 354, 5 1/8 in Nominal Inside Dia., 5 1/2 in Nominal Outside Dia., 90 Shore A, Black, 2 PK ◀◀ ◀ ▶ ▶▶
