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: 103 mm Nominal Inside Dia., 109 mm Nominal Outside Dia., 109 mm Actual Outside Dia., 2 PK O-Ring: 3 mm Nominal Inside Dia., 7 mm Nominal Outside Dia., 7 mm Actual Outside Dia., Black, 25 PK O-Ring: 3 mm Nominal Inside Dia., 9 mm Nominal Outside Dia., 9 mm Actual Outside Dia., Black, 50 PK O-Ring: 156, 4 1/4 in Nominal Inside Dia., 4 7/16 in Nominal Outside Dia., 70 Shore A, Red, 10 PK O-Ring: 12 mm Nominal Inside Dia., 17 mm Nominal Outside Dia., 17 mm Actual Outside Dia., 100 PK O-Ring: 239, 3 5/8 in Nominal Inside Dia., 3 7/8 in Nominal Outside Dia., 75 Shore A, Black O-Ring: 224, 1 3/4 in Nominal Inside Dia., 2 in Nominal Outside Dia., 70 Shore A, Black, Inch, 5 PK O-Ring: 5.1 mm Nominal Inside Dia., 8.3 mm Nominal Outside Dia., 8.3 mm Actual Outside Dia., 100 PK O-Ring: 16.1 mm Nominal Inside Dia., 19.3 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 008, 3/16 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 50 mm Nominal Inside Dia., 60 mm Nominal Outside Dia., 60 mm Actual Outside Dia., 20 PK Backup Ring: Hytrel, For 125, 0.045 in Thick, Black, 50 PK O-Ring: 019, 13/16 in Nominal Inside Dia., 15/16 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 45 mm Nominal Inside Dia., 54 mm Nominal Outside Dia., 54 mm Actual Outside Dia., 2 PK O-Ring: 471, 22 in Nominal Inside Dia., 22 1/2 in Nominal Outside Dia., 90 Shore A, Black Backup Ring, Contoured: Buna N, For 352, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 14.8 mm Nominal Inside Dia., 19.6 mm Nominal Outside Dia., 70 Shore A, Green, 50 PK O-Ring: 016, 3/8 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 80 Shore A, Black, 25 PK O-Ring: 17/64 in Nominal Inside Dia., 0.371 in Actual Outside Dia., 55 Shore D, White, 50 PK O-Ring: 19.5 mm Nominal Inside Dia., 23.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK ◀◀ ◀ ▶ ▶▶
