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: 018, 3/4 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 12.3 mm Nominal Inside Dia., 17.1 mm Nominal Outside Dia., 75 Shore A, Black, 50 PK O-Ring: 339, 3 1/4 in Nominal Inside Dia., 3 5/8 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 037, 2 1/2 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 242, 4 in Nominal Inside Dia., 4 1/4 in Nominal Outside Dia., 4.262 in Actual Outside Dia. O-Ring: 146, 2 5/8 in Nominal Inside Dia., 2 13/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 100 mm Nominal Inside Dia., 108 mm Nominal Outside Dia., 108 mm Actual Outside Dia., 2 PK O-Ring: 228, 2 1/4 in Nominal Inside Dia., 2 1/2 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 15 mm Nominal Inside Dia., 18 mm Nominal Outside Dia., 18 mm Actual Outside Dia., Std, 25 PK O-Ring: 45 mm Nominal Inside Dia., 48 mm Nominal Outside Dia., 48 mm Actual Outside Dia., 25 PK O-Ring: 257, 5 7/8 in Nominal Inside Dia., 6 1/8 in Nominal Outside Dia., 70 Shore A, Red, 10 PK Backup Ring: Hytrel, For 14, 0.045 in Thick, Black, 50 PK O-Ring: 24 mm Nominal Inside Dia., 28 mm Nominal Outside Dia., 28 mm Actual Outside Dia., 10 PK O-Ring: 111 mm Nominal Inside Dia., 117 mm Nominal Outside Dia., 117 mm Actual Outside Dia., 5 PK O-Ring: 44 mm Nominal Inside Dia., 56 mm Nominal Outside Dia., 56 mm Actual Outside Dia., 5 PK O-Ring: 235 mm Nominal Inside Dia., 243 mm Nominal Outside Dia., 243 mm Actual Outside Dia., 2 PK O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 75 Shore A, Black, Inch, 50 PK O-Ring: 26 mm Nominal Inside Dia., 28.4 mm Nominal Outside Dia., 28.4 mm Actual Outside Dia., 50 PK O-Ring: 79 mm Nominal Inside Dia., 86 mm Nominal Outside Dia., 86 mm Actual Outside Dia., 5 PK O-Ring: 20 mm Nominal Inside Dia., 30 mm Nominal Outside Dia., 30 mm Actual Outside Dia., 10 PK ◀◀ ◀ ▶ ▶▶
