419-Piece Metric Black Nitrile O-Ring Assortment Kit - NBR Rubber - Chemical-Resistant

This 419-piece metric O-ring assortment kit features durable black nitrile butadiene rubber (NBR) construction, ideal for sealing applications exposed to oils, fuels, and hydrocarbons. Designed for professional automotive and industrial maintenance, the set includes a wide range of sizes organized for quick identification and use.

Specifications & Features

• Material: Nitrile Butadiene Rubber (NBR)
• Color: Black
• Chemical Compatibility: Resistant to hydrocarbons, fats, oils, and gas
• Not Suitable For: Brake fluid applications
• Performance: Good abrasion resistance and compression set; high tensile strength
• Total Pieces: 419
• Inner Diameter Range: 3mm to 50mm
• Section Widths: 1.5mm, 2.0mm, 2.5mm, 3.5mm
• Packaging: Plastic organizer box with labeled compartments

O-Ring Size Breakdown

• R-01 – 3 × 1.5 mm – 20 pcs
• R-02 – 4.4 × 2.0 mm – 20 pcs
• R-03 – 5 × 2.0 mm – 18 pcs
• R-04 – 7 × 1.5 mm – 23 pcs
• R-05 – 10 × 1.5 mm – 23 pcs
• R-06 – 13 × 1.5 mm – 23 pcs
• R-07 – 10 × 2.5 mm – 14 pcs
• R-08 – 11 × 2.5 mm – 13 pcs
• R-09 – 13 × 2.5 mm – 14 pcs
• R-10 – 14 × 2.5 mm – 13 pcs
• R-11 – 16 × 2.5 mm – 14 pcs
• R-12 – 18 × 2.5 mm – 14 pcs
• R-13 – 19 × 2.5 mm – 13 pcs
• R-14 – 21 × 2.5 mm – 14 pcs
• R-15 – 22 × 2.5 mm – 13 pcs
• R-16 – 18 × 3.5 mm – 10 pcs
• R-17 – 20 × 3.5 mm – 10 pcs
• R-18 – 22 × 3.5 mm – 10 pcs
• R-19 – 23.5 × 3.5 mm – 10 pcs
• R-20 – 25 × 3.5 mm – 10 pcs
• R-21 – 26.5 × 3.5 mm – 10 pcs
• R-22 – 28 × 3.5 mm – 10 pcs
• R-23 – 30 × 3.5 mm – 10 pcs
• R-24 – 31 × 3.5 mm – 10 pcs
• R-25 – 33 × 3.5 mm – 10 pcs
• R-26 – 34.5 × 3.5 mm – 10 pcs
• R-27 – 36 × 3.5 mm – 10 pcs
• R-28 – 38 × 3.5 mm – 10 pcs
• R-29 – 41 × 3.5 mm – 10 pcs
• R-30 – 44 × 3.5 mm – 10 pcs
• R-31 – 47 × 3.5 mm – 10 pcs
• R-32 – 50 × 3.5 mm – 10 pcs