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: 224, 1 3/4 in Nominal Inside Dia., 2 in Nominal Outside Dia., 60 Shore A, White, 2 PK O-Ring: 932, 5/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 70 Shore A, Black, 40 PK O-Ring: 99 mm Nominal Inside Dia., 104 mm Nominal Outside Dia., 104 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 145, 0.053 in Thick, 0.129 in Radius, 50 PK O-Ring: 51 mm Nominal Inside Dia., 55 mm Nominal Outside Dia., 55 mm Actual Outside Dia., 25 PK O-Ring: 110 mm Nominal Inside Dia., 122 mm Nominal Outside Dia., 122 mm Actual Outside Dia., 2 PK O-Ring: 24.6 mm Nominal Inside Dia., 31.8 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 195 mm Nominal Inside Dia., 207 mm Nominal Outside Dia., 207 mm Actual Outside Dia., Black O-Ring Assortment: SAE, Silicone, 436 Pieces, 36 # of Sizes, 70 Shore A O-Ring: 14.5 mm Nominal Inside Dia., 20.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 420, 3 7/8 in Nominal Inside Dia., 4 3/8 in Nominal Outside Dia., 4.4 in Actual Outside Dia. O-Ring: 173, 8 1/2 in Nominal Inside Dia., 8 11/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 200 mm Nominal Inside Dia., 210 mm Nominal Outside Dia., 210 mm Actual Outside Dia., Black O-Ring: 5.7 mm Nominal Inside Dia., 9.5 mm Nominal Outside Dia., 9.5 mm Actual Outside Dia., 50 PK O-Ring: 78 mm Nominal Inside Dia., 90 mm Nominal Outside Dia., 90 mm Actual Outside Dia., 75 Shore A O-Ring: 20 mm Nominal Inside Dia., 24 mm Nominal Outside Dia., 24 mm Actual Outside Dia., 100 PK O-Ring: 22 mm Nominal Inside Dia., 27 mm Nominal Outside Dia., 27 mm Actual Outside Dia., 50 PK O-Ring: 018, 3/4 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 60 Shore A, White, 10 PK O-Ring: 009, 7/32 in Nominal Inside Dia., 11/32 in Nominal Outside Dia., 70 Shore A, Red, FDA, 10 PK O-Ring: 314, 3/4 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 90 Shore A, Black, 10 PK ◀◀ ◀ ▶ ▶▶
