NM507-90 NBR MIL/Aero O-Rings

Nitrile 90 Durometer O-Ring, Low Temperature, Mil/Aero (NM507-90)

Extrusion Resistant Nitrile O-Rings Meet High Pressure Demands of Boss Fittings

Technical Specifications

Inside Diameter: 2.175 inch
Width: 0.103 inch
Polymer Material Options: Nitrile Butadiene Rubber (NBR, XNBR)
Trade Name: N507, Buna, Buna N, Buna 90
Durometer: 90 Shore A
Thermal Application Type: Low Temperature (< -30°F)
Minimum Operating Temperature: -65 °F
Maximum Operating Temperature: 180 °F
For Fluid Type: Oil
Industry: Aerospace
Specifications Met: MIL/Aero, AMS-P-5510, MIL-P-5510C, MS28778
Region of Origin: North America
Internally Lubricated: No
Color: Black

For more information, click here to view the brochures :

https://ph.parker.com/fr/en/product/nitrile-90-durometer-o-ring-low-temperature-mil-aero-nm507-90/nm507-a5510-139

Frequently asked questions:

1. What are NM507-90 NBR MIL/Aero O-Rings used for?
NM507-90 NBR O-Rings are high-performance nitrile rubber seals designed for demanding aerospace and military fluid systems. Their 90 Shore A hardness and extrusion-resistant properties make them suitable for aircraft hydraulic systems, straight-thread tube fittings, and aerospace boss fitting applications requiring dependable sealing under pressure.
2. Can NM507-90 O-Rings withstand high pressure and low temperatures?
Yes, NM507-90 O-Rings are engineered to provide improved extrusion resistance and low-temperature flexibility. The compound has a reported service temperature range of approximately -65°F to +160°F (-54°C to +71°C), making it suitable for demanding aerospace sealing environments. Actual pressure capability depends on gland design, clearance gaps, fluid conditions, and system requirements.
3. Are NM507-90 NBR O-Rings compatible with military hydraulic fluids?
NM507-90 nitrile O-Rings are formulated for compatibility with MIL-PRF-5606 hydraulic fluid. The compound is designed to maintain its sealing properties after fluid exposure, supporting reliable performance in aircraft hydraulic systems and other oil-based applications. Always verify fluid compatibility and operating conditions before selecting a seal.
4. Which military and aerospace specifications do NM507-90 O-Rings meet?
NM507-90 is associated with aerospace and military sealing applications requiring compliance with AMS-P-5510 and relevant AS28778 or MS28778 fitting requirements. Parker identifies NM507-90 as a qualified material for AMS-P-5510. Buyers should confirm the required specification, size standard, and certification documentation for their specific application before ordering.
5. How do I choose the right NM507-90 MIL/Aero O-Ring size?
Choose an NM507-90 O-Ring by checking the required inside diameter, cross-sectional thickness, gland dimensions, operating pressure, temperature range, and hydraulic fluid compatibility. Standard aerospace sizes and custom configurations may be available. Confirm the applicable drawing and specification requirements to ensure a correct fit, reliable sealing, and resistance to extrusion in high-pressure applications.

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