OSK™ SAE Boss O-Ring Seal Kit – 250 Pieces
High-Performance Sealing for Hydraulic Equipment
The OSK™ SAE Boss O-Ring Seal Kit is an essential solution for sealing straight thread tube fittings (Boss Type) in hydraulic systems. This kit includes 250 pieces of the 12 most popular 900-series Boss O-Rings, ensuring compatibility with a wide range of hydraulic applications.
Why Choose the OSK™ SAE Boss O-Ring Seal Kit?
- Comprehensive Selection – Covers 12 SAE dash sizes, from -4 to -16, ensuring you have the right O-Ring for most hydraulic fittings.
- Premium Buna-N 70 Durometer (NBR) Material – Offers excellent resistance to petroleum-based fluids, hydraulic oils, and fuels, making it ideal for industrial and automotive use.
- Temperature Resilience – Operates in a wide range of -40°F to +225°F (-40°C to +107°C) for reliable performance in extreme conditions.
- Versatile Use – Compatible with hydraulic motors, cylinders, pumps, valves, and more.
- Durable & Abrasion-Resistant – Excellent tensile strength for prolonged sealing effectiveness.
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) 70 Durometer
- Outstanding Resistance to petroleum oils, gasoline, hydraulic fluids, and L.P. gases.
- Performs well with silicone greases, di-ester base lubricants (MIL-L-7808), and ethylene glycol-based fluids (Hydrolubes).
- High Tensile Strength – Designed for demanding sealing applications in hydraulic and pneumatic systems.
- Long-Lasting Durability – Resistant to wear and abrasion for extended service life.
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 +225°F (-40°C to +107°C)
Why Buy from Us?
- Industry-Leading Quality – We supply precision-engineered sealing solutions that meet ISO 9001:2015 standards.
- Bulk & Custom Orders Available – Need a specialized kit? We can create custom O-Ring kits tailored to your application.
- Exceptional Customer Support – Our team of sealing experts is here to assist with product selection, application guidance, and technical support.
Order Your OSK™ SAE Boss O-Ring Seal Kit Today!
Stay prepared with a high-quality, all-in-one O-Ring kit designed for professional hydraulic sealing applications.
