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: 11 mm Nominal Inside Dia., 18 mm Nominal Outside Dia., 18 mm Actual Outside Dia., 100 PK O-Ring: 154, 3 3/4 in Nominal Inside Dia., 3 15/16 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 24.5 mm Nominal Inside Dia., 28.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 014, 1/2 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Natural, 10 PK O-Ring: 231, 2 5/8 in Nominal Inside Dia., 2 7/8 in Nominal Outside Dia., 50 Shore A, Red, 10 PK Backup Ring: Hytrel, For 12, 0.045 in Thick, Black, 50 PK O-Ring: 56 mm Nominal Inside Dia., 62 mm Nominal Outside Dia., 62 mm Actual Outside Dia., Std, 2 PK O-Ring: 171, 8 in Nominal Inside Dia., 8 3/16 in Nominal Outside Dia., 90 Shore A, Black, Inch, 2 PK O-Ring: 20.3 mm Nominal Inside Dia., 25.1 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 25 mm Nominal Inside Dia., 29 mm Nominal Outside Dia., 29 mm Actual Outside Dia., Std, 10 PK O-Ring: 110, 3/8 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 75 Shore A, Black, Inch, 5 PK Backup Ring: Hytrel, For 344, 0.065 in Thick, Orange, 10 PK O-Ring: 124 mm Nominal Inside Dia., 132 mm Nominal Outside Dia., 132 mm Actual Outside Dia., Black O-Ring: 5 mm Nominal Inside Dia., 8 mm Nominal Outside Dia., 8 mm Actual Outside Dia., Red, 50 PK O-Ring: 215, 1 1/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 50 Shore A, Red, 10 PK O-Ring: 39 mm Nominal Inside Dia., 51 mm Nominal Outside Dia., 51 mm Actual Outside Dia., 5 PK O-Ring: 31 mm Nominal Inside Dia., 36 mm Nominal Outside Dia., 36 mm Actual Outside Dia., 10 PK O-Ring: 911, 11/16 in Nominal Outside Dia., 1.095 in Actual Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 24.6 mm Nominal Inside Dia., 30.6 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 373, 9 in Nominal Inside Dia., 9 3/8 in Nominal Outside Dia., 70 Shore A, Red, 5 PK ◀◀ ◀ ▶ ▶▶
