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: 30 mm Nominal Inside Dia., 33 mm Nominal Outside Dia., 33 mm Actual Outside Dia., Std, 25 PK O-Ring: 215, 1 1/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 75 Shore A, Black, 5 PK Backup Ring, Contoured: Buna N, For 164, 0.053 in Thick, 0.129 in Radius, 10 PK O-Ring: 71 mm Nominal Inside Dia., 77 mm Nominal Outside Dia., 77 mm Actual Outside Dia., 10 PK O-Ring: 319, 1 1/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 80 Shore A, Black, 5 PK O-Ring: 019, 13/16 in Nominal Inside Dia., 15/16 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 034, 2 1/8 in Nominal Inside Dia., 2 1/4 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 51 mm Nominal Inside Dia., 57 mm Nominal Outside Dia., 57 mm Actual Outside Dia., Std, 25 PK O-Ring: 8.5 mm Nominal Inside Dia., 12.5 mm Nominal Outside Dia., 12.5 mm Actual Outside Dia., 50 PK O-Ring: 226, 2 in Nominal Inside Dia., 2 1/4 in Nominal Outside Dia., 70 Shore A, Black, 4,600 PK O-Ring: 36.5 mm Nominal Inside Dia., 40.5 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 102 mm Nominal Inside Dia., 112 mm Nominal Outside Dia., 112 mm Actual Outside Dia., 2 PK O-Ring: 157, 4 1/2 in Nominal Inside Dia., 4 11/16 in Nominal Outside Dia., 70 Shore A, Red, Inch O-Ring: 6 mm Nominal Inside Dia., 9 mm Nominal Outside Dia., 9 mm Actual Outside Dia., Black, 10 PK O-Ring: 363, 6 1/2 in Nominal Inside Dia., 6 7/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 375, 9 1/2 in Nominal Inside Dia., 9 7/8 in Nominal Outside Dia., 90 Shore A, Black, Inch O-Ring: 134, 1 7/8 in Nominal Inside Dia., 2 1/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 312, 5/8 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 913, 13/16 in Nominal Outside Dia., 1.218 in Actual Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 28 mm Nominal Inside Dia., 34 mm Nominal Outside Dia., 34 mm Actual Outside Dia., Red, 2 PK ◀◀ ◀ ▶ ▶▶
