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OSK™ SAE Boss O-Ring Seal Kit - SAE 900 - 155 Piece Buna-N 90



$10.00

Quantity Discount Prices
1-9
$10.00
10-24
$9.00
25+
$7.50

  • Model: K155X8N90-900
  • 17 in Stock

OSK™ SAE Boss O-Ring Seal Kit

This Kit contains 155 pieces and 8 of the most popular 900 series O-Rings. These Boss Seal O-Rings are used in sealing straight thread tube fittings (Boss Type) in the design and service of hydraulic equipment.

The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the 9 identify the nominal tube size in 16ths of an inch. The tube size is its outside diameter (OD). For example, size -903 is intended for use with 3/16-inch tube. The one exception, size -901, is intended for use with 3/32-inch tube. 1/16-inch tube is not common in aircraft use.

OSK™ SAE Boss O-Ring Seal Kit Includes:

  • 15pc -903 Boss O-Rings Tube Size OD: 3/16", SAE Dash Size -3, Thread Size 3/8-24 UNF
  • 25pc -904 Boss O-Rings Tube Size OD: 1/4", SAE Dash Size -4, Thread Size 7/16-20 UNF
  • 15pc -906 Boss O-Rings Tube Size OD: 3/8", SAE Dash Size -6, Thread Size 9/16-18 UNF
  • 25pc -907 Boss O-Rings Tube Size OD: 7/16"
  • 25pc -908 Boss O-Rings Tube Size OD: 1/2", SAE Dash Size -8, Thread Size 3/4"-16 UNF
  • 25pc -910 Boss O-Rings Tube Size OD: 5/8", SAE Dash Size -10, Thread Size 7/8-14 UNF
  • 15pc -912 Boss O-Rings Tube Size OD: 3/4", SAE Dash Size -12, Thread Size 1-1/16-12 UN
  • 10pc -916 Boss O-Rings Tube Size OD: 1", SAE Dash Size -16, Thread Size 1-5/16-12 UN

Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications.

Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and is exceptionally resistant to petroleum base oils and hydrocarbon fuels. Nitrile materials also exhibit excellent tensile strength and abrasion resistance properties. The material performs well with most dilute acids, silicone oils and lubricants and in water applications. It is not recommended for use with ketones, aromatic hydrocarbons and phosphate ester hydraulic fluids. More than 50% of the O-Rings sold are Nitrile O-Rings, commonly used in hydraulic/pneumatic motors, cylinders, pumps and valves.

Buna-N / Nitrile Recommended uses:

  • General purpose sealing.
  • Petroleum oils and fluids.
  • Gasoline
  • Hydraulic fluids
  • L.P. gases
  • Cold Water.
  • Silicone greases and oils
  • Di-ester base lubricants (MIL-L-7808).
  • Ethylene glycol base fluids (Hydrolubes)

Nitrile is not recommended for:

  • Halogenated hydrocarbons (carbon tetrachloride, trichloroethylene)
  • Nitro hydrocarbons (nitrobenzene, aniline)
  • Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul).
  • Ketones (MEK, acetone)
  • Ozone
  • Sunlight, UV
  • Weather
  • Strong Acids Ozone
  • Automotive brake fluid

Compound Info:

  • A sulfur-cured, Nitrile compound for high pressure
  • Color: Black
  • Duro: 90
  • FDA: No
  • ASTM D2000-75 Grade 7BG915 B14 E14 E34 E51 E61 F16 L14
    ASTM D2000-01 Grade M7BG910 B14 EA14 EF11 EF21 EO14 EO34 F16
  • B90 is designed to meet or exceed the properties of these popular Buna Nitrile Compounds:
    N0552-90, N552-90, N140-90, B1001, C90, H144339, 4177-90/4058-90, 8309 and 477B

Operating temperature: -40° to +250°F




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