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: 212, 7/8 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 75 Shore A, Black, 5 PK O-Ring: 439, 6 1/2 in Nominal Inside Dia., 7 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 453, 12 in Nominal Inside Dia., 12 1/2 in Nominal Outside Dia., 90 Shore A, Black, Inch O-Ring: 125, 1 5/16 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 68 mm Nominal Inside Dia., 71 mm Nominal Outside Dia., 71 mm Actual Outside Dia., 25 PK O-Ring: 203, 5/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Red, 25 PK O-Ring: 205 mm Nominal Inside Dia., 217 mm Nominal Outside Dia., 217 mm Actual Outside Dia., Black O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, Black, X, 100 PK O-Ring: 474, 25 in Nominal Inside Dia., 25 1/2 in Nominal Outside Dia., 25.49 in Actual Outside Dia. O-Ring: 148 mm Nominal Inside Dia., 154 mm Nominal Outside Dia., 154 mm Actual Outside Dia., 5 PK O-Ring: 248, 4 3/4 in Nominal Inside Dia., 5 in Nominal Outside Dia., 80 Shore A, Black, 2 PK O-Ring: 146, 2 5/8 in Nominal Inside Dia., 2 13/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 015, 9/16 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 70 Shore A, Blue, Std, 5 PK Backup Ring, Contoured: Buna N, For 335, 0.076 in Thick, 0.262 in Radius, 50 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring: Hytrel, For 226, 0.045 in Thick, Orange, 50 PK O-Ring: 008, 3/16 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Green, 25 PK O-Ring: 284.5 mm Nominal Inside Dia., 301.3 mm Nominal Outside Dia., 301.3 mm Actual Outside Dia. O-Ring: 12 mm Nominal Inside Dia., 24 mm Nominal Outside Dia., 24 mm Actual Outside Dia., 10 PK ◀◀ ◀ ▶ ▶▶
