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: 5 mm Nominal Inside Dia., 8 mm Nominal Outside Dia., 8 mm Actual Outside Dia., Black, 25 PK O-Ring: 447, 9 in Nominal Inside Dia., 9 1/2 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 174.2 mm Nominal Inside Dia., 185.6 mm Nominal Outside Dia., 70 Shore A, Black, 2 PK O-Ring: 12 mm Nominal Inside Dia., 16 mm Nominal Outside Dia., 16 mm Actual Outside Dia., 100 PK O-Ring: 54.2 mm Nominal Inside Dia., 65.6 mm Nominal Outside Dia., 70 Shore A, Black, 20 PK O-Ring: 84 mm Nominal Inside Dia., 91 mm Nominal Outside Dia., 91 mm Actual Outside Dia., 10 PK Backup Ring: Hytrel, For 340, 0.065 in Thick, Orange, 10 PK O-Ring: 21 mm Nominal Inside Dia., 27 mm Nominal Outside Dia., 27 mm Actual Outside Dia., 10 PK O-Ring: 109, 5/16 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 29.1 mm Nominal Inside Dia., 32.3 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 100 PK X-Ray and Metal Detectable O-Ring: 008, 3/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia. O-Ring: 294.5 mm Nominal Inside Dia., 311.3 mm Nominal Outside Dia., 311.3 mm Actual Outside Dia. O-Ring: 109, 5/16 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 75 Shore A, Brown, 50 PK O-Ring: 450, 10 1/2 in Nominal Inside Dia., 11 in Nominal Outside Dia., 90 Shore A, Black, Inch O-Ring: 449, 10 in Nominal Inside Dia., 10 1/2 in Nominal Outside Dia., 90 Shore A, Black O-Ring: 018, 3/4 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 80 Shore A, Black, Inch, 25 PK O-Ring: 415, 3 1/4 in Nominal Inside Dia., 3 3/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 100 mm Nominal Inside Dia., 112 mm Nominal Outside Dia., 112 mm Actual Outside Dia., 2 PK O-Ring: 12 mm Nominal Inside Dia., 14 mm Nominal Outside Dia., 14 mm Actual Outside Dia., Std, 25 PK O-Ring: 321, 1 3/16 in Nominal Inside Dia., 1 9/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK ◀◀ ◀ ▶ ▶▶
