High-Performance Sealing for High-Pressure Hydraulic Applications
The OSK™ SAE Boss O-Ring Seal Kit is a must-have for sealing straight thread tube fittings (Boss Type) in high-pressure hydraulic systems. This kit includes 250 pieces of the 12 most commonly used 900-series Boss O-Rings, specifically made from Buna-N 90 Durometer (NBR) for superior resistance to extreme pressures and harsh environments.
Why Choose the OSK™ SAE Boss O-Ring Seal Kit with Buna-N 90?
- Designed for High-Pressure Applications – Harder 90 durometer material ensures excellent resistance to extrusion and deformation under extreme conditions.
- Superior Chemical Resistance – Ideal for hydraulic fluids, petroleum-based oils, and fuels used in industrial and automotive applications.
- Extended Temperature Range – Performs in environments ranging from -40°F to +250°F (-40°C to +121°C).
- Comprehensive Assortment – Covers 12 SAE dash sizes, from -4 to -16, ensuring compatibility with various hydraulic fitting requirements.
- Long-Lasting Durability – Exceptional tensile strength and abrasion resistance make these O-Rings perfect for high-stress environments.
Kit Contents – Most Popular SAE Boss O-Ring Sizes
- 35pcs -904 | Tube OD: 1/4" | Dash Size: -4 | Thread: 7/16-20 UNF
- 30pcs -905 | Tube OD: 5/16" | Dash Size: -5 | Thread: 1/2-20 UNF
- 30pcs -906 | Tube OD: 3/8" | Dash Size: -6 | Thread: 9/16-18 UNF
- 25pcs -907 | Tube OD: 7/16"
- 25pcs -908 | Tube OD: 1/2" | Dash Size: -8 | Thread: 3/4-16 UNF
- 20pcs -909 | Tube OD: 9/16"
- 20pcs -910 | Tube OD: 5/8" | Dash Size: -10 | Thread: 7/8-14 UNF
- 15pcs -911 | Tube OD: 11/16"
- 15pcs -912 | Tube OD: 3/4" | Dash Size: -12 | Thread: 1-1/16-12 UN
- 15pcs -913 | Tube OD: 13/16"
- 10pcs -914 | Tube OD: 7/8" | Dash Size: -14 | Thread: 1-3/16-12 UN
- 10pcs -916 | Tube OD: 1" | Dash Size: -16 | Thread: 1-5/16-12 UN
Material Benefits – Buna-N (Nitrile) 90 Durometer
- Engineered for High-Pressure Sealing – Harder compound minimizes extrusion in hydraulic applications.
- Exceptional Chemical Resistance – Compatible with petroleum oils, gasoline, hydraulic fluids, L.P. gases, and silicone greases.
- Enhanced Wear Resistance – Designed for high-stress applications, ensuring reliability and long service life.
- Performs Well in Harsh Environments – Resistant to water, ethylene glycol base fluids (Hydrolubes), and di-ester base lubricants (MIL-L-7808).
Not Recommended For:
- Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul)
- Ozone, UV, and weather exposure
- Automotive brake fluid
- Strong acids, ketones, and halogenated hydrocarbons
Temperature Rating:
- Operating Range: -40°F to +250°F (-40°C to +121°C)
Why Buy from Us?
- Premium Quality & ISO 9001:2015 Certified – We supply industry-leading O-Rings that meet strict quality control standards.
- Custom Orders & Bulk Discounts – Need specific sizes or custom kits? We can accommodate your requirements.
- Expert Support – Our sealing specialists provide technical guidance to help you find the right solution.
Order Your OSK™ SAE Boss O-Ring Seal Kit (Buna-N 90) Today!
Ensure maximum sealing performance in high-pressure hydraulic systems with this high-quality O-Ring kit designed for professional use.
