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: 386, 17 in Nominal Inside Dia., 17 3/8 in Nominal Outside Dia., 70 Shore A, Black, 5 PK Backup Ring, Contoured: Buna N, For 334, 0.076 in Thick, 0.262 in Radius, 50 PK O-Ring: 209.5 mm Nominal Inside Dia., 226.3 mm Nominal Outside Dia., 226.3 mm Actual Outside Dia. O-Ring: 236, 3 1/4 in Nominal Inside Dia., 3 1/2 in Nominal Outside Dia., 75 Shore A, Brown, 5 PK Backup Ring: Hytrel, For 443, 0.099 in Thick, Orange, 5 PK O-Ring: 005, 3/32 in Nominal Inside Dia., 7/32 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 284, 18 in Nominal Inside Dia., 18 1/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 331, 2 1/4 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 75 Shore A, Brown, 5 PK O-Ring: 19 mm Nominal Inside Dia., 25 mm Nominal Outside Dia., 25 mm Actual Outside Dia., 25 PK O-Ring: 255, 5 5/8 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 145 mm Nominal Inside Dia., 151 mm Nominal Outside Dia., 151 mm Actual Outside Dia., 5 PK O-Ring: 210 mm Nominal Inside Dia., 222 mm Nominal Outside Dia., 222 mm Actual Outside Dia., Black O-Ring: 24 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., 50 PK O-Ring: 35 mm Nominal Inside Dia., 40 mm Nominal Outside Dia., 40 mm Actual Outside Dia., Red, 10 PK O-Ring: 26.5 mm Nominal Inside Dia., 30.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 365, 7 in Nominal Inside Dia., 7 3/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 75 Shore A, Blue, 5 PK O-Ring: 211, 13/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 149, 2 13/16 in Nominal Inside Dia., 3 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 110 mm Nominal Inside Dia., 120 mm Nominal Outside Dia., 120 mm Actual Outside Dia., Black ◀◀ ◀ ▶ ▶▶
