O-Ring Kit, Metric, Buna-N 70A Durometer, 385 Pieces, 30 Sizes

Metric Buna-N O-Ring Kit, 70A Durometer, 385 Pieces, 30 Sizes Metric O-Ring Sizes Including: 16 each (2mm cross-section) in ID's of:  3, 4, 5, 6, 7, 8, 1013 each (2.5mm cross-section) in ID's of: 10, 11, 12, 14, 16, 17, 1912 each (3mm cross-section) in ID's of: 20, 22, 24, 25, 27, 28, 30, 32, 33, 35, 36, 3811 each (3mm cross-section) in ID's of: 19  9 each (4mm cross-section) in ID's of: 38, 41, 44 Material: Buna-N (NBR) is one of the most commonly used general-purpose O-Ring elastomer compounds because of its relatively low cost, good physical properties and chemical resistance including many basic oils, fuels, and lubricants. The actual name is Acrylonitrile-Butadiene and can be referred to as Buna, Nitrile or NBR.  The standard durometer (hardness) is 70 duro or 90 duro and black in color. The operating temperature range is generally -30° to 250°F*. Buna is not recommended for automotive or aircraft glycol-based brake fluid, halogenated hydrocarbons (carbon tetrachloride, trichloroe