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: 28 mm Nominal Inside Dia., 36 mm Nominal Outside Dia., 36 mm Actual Outside Dia., 25 PK O-Ring: 108, 1/4 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 75 Shore A, Blue, 10 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 75 Shore A, Brown, 50 PK O-Ring: 5 mm Nominal Inside Dia., 10 mm Nominal Outside Dia., 10 mm Actual Outside Dia., 100 PK O-Ring: 339, 3 1/4 in Nominal Inside Dia., 3 5/8 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 148, 2 3/4 in Nominal Inside Dia., 2 15/16 in Nominal Outside Dia., 55 Shore D, White, 5 PK O-Ring: 8.8 mm Nominal Inside Dia., 12.6 mm Nominal Outside Dia., 12.6 mm Actual Outside Dia., 10 PK O-Ring: 129.4 mm Nominal Inside Dia., 135.4 mm Nominal Outside Dia., 70 Shore A, Black, 10 PK Backup Ring, Contoured: Buna N, For 016, 0.049 in Thick, 0.087 in Radius, 100 PK O-Ring: 212, 7/8 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 1.137 in Actual Outside Dia. Backup Ring: Hytrel, For 224, 0.045 in Thick, Orange, 50 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 18 mm Nominal Inside Dia., 21 mm Nominal Outside Dia., 21 mm Actual Outside Dia., Std, 50 PK O-Ring: 242, 4 in Nominal Inside Dia., 4 1/4 in Nominal Outside Dia., 90 Shore A, Black, Inch, 2 PK O-Ring: 022, 1 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 13 mm Nominal Inside Dia., 16 mm Nominal Outside Dia., 16 mm Actual Outside Dia., 100 PK O-Ring: 80 mm Nominal Inside Dia., 87 mm Nominal Outside Dia., 87 mm Actual Outside Dia., 5 PK O-Ring: 68 mm Nominal Inside Dia., 71 mm Nominal Outside Dia., 71 mm Actual Outside Dia., Std, 5 PK O-Ring: 3.1 mm Nominal Inside Dia., 6.3 mm Nominal Outside Dia., 6.3 mm Actual Outside Dia., 100 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Black, 100 PK ◀◀ ◀ ▶ ▶▶
