4.5mm X 28mm (NBR) Buna-N 70 Duro Metric O-Ring

Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer

The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings, engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to petroleum-based oils, fuels, and a wide range of hydraulic fluids, making them the most commonly used elastomer for sealing applications. Metric O-Rings are measured by their cross-section (CS) and inside diameter (ID), ensuring precise sizing for your sealing requirements.

Key Features & Benefits:

• Premium Quality Material: Made from high-performance Buna-N (Nitrile) rubber for durability and reliability.
• Traceability & Accountability: Our Certificate of Conformance allow customers to trace O-Rings back to the manufacturer, lot number, and production batch, ensuring accountability in case of defects or failures.
• Wide Temperature Range: Operates efficiently between -40°F to +250°F (-40°C to +121°C).
• Oil & Fuel Resistance: Exceptional resistance to petroleum-based oils, fuels, and lubricants.
• Superior Tensile Strength: High abrasion resistance for long-lasting performance in dynamic and static applications.
• Versatile Applications: Compatible with hydraulic and pneumatic systems, motors, cylinders, pumps, and valves.
• Metric Sizes Available: Defined by cross-section (CS) and inside diameter (ID) to ensure a perfect fit.
• Comparable to: Parker N1470-70, N0674-70 and Parco 4900-70 for seamless replacement compatibility.

Recommended Applications:

• General Purpose Sealing
• Hydraulic Fluids & Systems
• Gasoline & Diesel Fuel Sealing
• L.P. Gases & Petroleum-Based Oils
• Cold Water Sealing
• Silicone Greases & Oils
• Di-Ester Base Lubricants (MIL-L-7808)
• Ethylene Glycol Base Fluids (Hydrolubes)

Not Recommended For:

• Automotive Brake Fluid
• Ozone & UV Exposure
• Halogenated Hydrocarbons (Carbon Tetrachloride, Trichloroethylene)
• Nitro Hydrocarbons (Nitrobenzene, Aniline)
• Phosphate Ester Hydraulic Fluids (Skydrol, Fyrquel, Pydraul)
• Ketones (MEK, Acetone)
• Strong Acids & Weathering Environments

Compound Information:

• Material: Buna-N / Nitrile (NBR)
• Durometer: 70 Shore A
• Color: Black
• Cure System: Sulfur-Cured
• FDA Compliance: No
• Operating Temperature: -40°F to +250°F (-40°C to +121°C)

Value-Added Services from The O-Ring Store LLC:

• Large Inventory & Fast Shipping – Ensuring you get the right O-Rings when you need them.
• Competitive Pricing & Bulk Discounts – Get the best value for your sealing needs.
• Custom O-Ring Solutions – Cut-to-size and custom-molded options available.
• Technical Expertise & Customer Support – Knowledgeable staff ready to assist with application-specific recommendations.

Trust The O-Ring Store LLC for superior-quality Buna-N Metric O-Rings designed to outperform and outlast standard sealing solutions. Order today and experience the difference in quality, reliability, and service!