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: 19.5 mm Nominal Inside Dia., 24.3 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK Backup Ring, Contoured: Buna N, For 132, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 2 mm Nominal Inside Dia., 4 mm Nominal Outside Dia., 4 mm Actual Outside Dia., Black, 100 PK O-Ring: 395, 26 in Nominal Inside Dia., 26 3/8 in Nominal Outside Dia., 26.36 in Actual Outside Dia. O-Ring: 344, 3 7/8 in Nominal Inside Dia., 4 1/4 in Nominal Outside Dia., 80 Shore A, Black, 2 PK O-Ring: 124, 1 1/4 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 80 Shore A, Black, 10 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 001-1/2, 1/16 in Nominal Inside Dia., 1/8 in Nominal Outside Dia., 70 Shore A, Red, 50 PK O-Ring: 135, 1 15/16 in Nominal Inside Dia., 2 1/8 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 23 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., 25 PK O-Ring: 52.6 mm Nominal Inside Dia., 64 mm Nominal Outside Dia., 64 mm Actual Outside Dia., 5 PK O-Ring: 128 mm Nominal Inside Dia., 134 mm Nominal Outside Dia., 134 mm Actual Outside Dia., 5 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 50 mm Nominal Inside Dia., 53 mm Nominal Outside Dia., 53 mm Actual Outside Dia., 5 PK O-Ring: 84.6 mm Nominal Inside Dia., 96 mm Nominal Outside Dia., 96 mm Actual Outside Dia., Black O-Ring: 026, 1 1/4 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 50 Shore A, Black, 25 PK O-Ring: 15.3 mm Nominal Inside Dia., 20.1 mm Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 205, 7/16 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 75 Shore A, Blue, 5 PK O-Ring: 240, 3 3/4 in Nominal Inside Dia., 4 in Nominal Outside Dia., 4.012 in Actual Outside Dia. ◀◀ ◀ ▶ ▶▶
