Parker's Extrusion-Resistant Nitrile O-Rings: Reliable Sealing for High-Pressure Boss Fittings

Extrusion-Resistant Nitrile O-Rings: Reliable Sealing for High-Pressure Boss Fittings

In aerospace and defense applications, sealing performance can make the difference between mission success and costly downtime. O-rings used in hydraulic systems must be able to resist extrusion under high pressures, perform reliably in low temperatures, and maintain compatibility with standard aerospace fluids.

That’s exactly what NM507 extrusion-resistant nitrile O-rings were designed to deliver.

Meeting Stringent Aerospace Standards

NM507 meets the demanding requirements of AMS-P-5510 SAE, a specification that requires a carefully balanced combination of low-temperature flexibility and fluid compatibility. One of the most critical tests for low-temperature sealing performance is Temperature Retraction (TR-10).

  • In original condition, NM507 achieves a TR-10 value of -46°F.
  • After a week-long immersion in Mil-PRF-5606 hydraulic oil at 158°F, the TR-10 shifts only slightly to -43°F.
  • This exceptional stability ensures that the O-rings retain flexibility and sealing integrity, even after exposure to harsh aerospace fluids.

Product Benefits Built for Aerospace

NM507 extrusion-resistant nitrile O-rings are specifically engineered to meet the needs of aerospace hydraulic systems:

  • Designed for straight-threaded, flared-tube connection fittings assembled in AS4395 & AS5202 bosses in accordance with MS21344
  • Compatible with systems containing air or MIL-PRF-5606 hydraulic oil
  • Broad service temperature range of -65°F to 160°F (-54°C to 71°C)
  • Available in O-ring part numbers designated MS28778-xxx (size indicated by xxx)
  • Manufactured from a QPL-listed material in accordance with AMS-P-5510
  • Trusted for use in aircraft Type I hydraulic systems to seal standard fittings of the AS4395 & AS5202 bosses

A Proven Solution for High-Pressure Demands

With its balance of extrusion resistance, low-temperature flexibility, and fluid compatibility, NM507 nitrile O-rings provide a reliable sealing solution for high-pressure aerospace applications. Engineers can specify these O-rings with confidence, knowing they meet the rigorous requirements of today’s hydraulic systems.

 

Need help with your sealing application? Contact Gallagher Engineers today for a customized solution.

 

This information was orignally posted to Parker.