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: 178, 9 3/4 in Nominal Inside Dia., 9 15/16 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 164, 6 1/4 in Nominal Inside Dia., 6 7/16 in Nominal Outside Dia., 70 Shore A, Red, 10 PK O-Ring: 224, 1 3/4 in Nominal Inside Dia., 2 in Nominal Outside Dia., 70 Shore A, Blue, 5 PK O-Ring: 027, 1 5/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 39 mm Nominal Inside Dia., 45 mm Nominal Outside Dia., 45 mm Actual Outside Dia., Red, 5 PK O-Ring: 409, 2 1/2 in Nominal Inside Dia., 3 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 106 mm Nominal Inside Dia., 112 mm Nominal Outside Dia., 112 mm Actual Outside Dia., 2 PK O-Ring: 327, 1 3/4 in Nominal Inside Dia., 2 1/8 in Nominal Outside Dia., 60 Shore A, White Backup Ring, Contoured: Buna N, For 166, 0.053 in Thick, 0.129 in Radius, 5 PK O-Ring: 64 mm Nominal Inside Dia., 72 mm Nominal Outside Dia., 72 mm Actual Outside Dia., 20 PK O-Ring: 10 mm Nominal Inside Dia., 15 mm Nominal Outside Dia., 15 mm Actual Outside Dia., Std, 25 PK O-Ring: 143, 2 7/16 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 98 mm Nominal Inside Dia., 103 mm Nominal Outside Dia., 103 mm Actual Outside Dia., 5 PK O-Ring: 148, 2 3/4 in Nominal Inside Dia., 2 15/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 358, 5 5/8 in Nominal Inside Dia., 6 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 10.5 mm Nominal Inside Dia., 12.5 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 50 PK O-Ring: 170, 7 3/4 in Nominal Inside Dia., 7 15/16 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 455, 13 in Nominal Inside Dia., 13 1/2 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 203 mm Nominal Inside Dia., 209 mm Nominal Outside Dia., 209 mm Actual Outside Dia., 2 PK O-Ring: 21 mm Nominal Inside Dia., 25 mm Nominal Outside Dia., 25 mm Actual Outside Dia., Red, 25 PK ◀◀ ◀ ▶ ▶▶
