OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Buna-N 70



$26.000

Qty Discounts Prices
1
$26.000
2-9
$20.800
10+
$19.500
  • Model: K250X12N70-900
  • 12 in Stock
Add to Cart:

OSK™ SAE Boss O-Ring Seal Kit

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.

This Kit contains 250 pieces and 12 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.

OSK™ SAE Boss O-Ring Seal Kit Includes:

  • 35pc -904 Boss O-Rings Tube Size OD: 1/4", SAE Dash Size -4, Thread Size 7/16-20 UNF
  • 30pc -905 Boss O-Rings Tube Size OD: 5/16", SAE Dash Size -5, Thread Size 1/2-20 UNF
  • 30pc -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
  • 20pc -909 Boss O-Rings Tube Size OD: 9/16"
  • 20pc -910 Boss O-Rings Tube Size OD: 5/8", SAE Dash Size -10, Thread Size 7/8-14 UNF
  • 15pc -911 Boss O-Rings Tube Size OD: 11/16"
  • 15pc -912 Boss O-Rings Tube Size OD: 3/4", SAE Dash Size -12, Thread Size 1-1/16-12 UN
  • 15pc -913 Boss O-Rings Tube Size OD: 13/16"
  • 10pc -914 Boss O-Rings Tube Size OD: 7/8", SAE Dash Size -14, Thread Size 1-3/16-12 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 70 Duro (NBR) Nitrile:

Nitrile, 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

Operating temperature: -40° to +225°F

Copyright © 2024 The O-Ring Store, LLC
1847 Wilma Dr, Clarkston WA 99403
Phone 208-413-6377 - Fax 208-413-6719