#18 DIN 3869 Fluid Connector / Profile Seal PR-18N85 Nitrile - M18 X 1.5 Fitting



Qty Discounts Prices
1-259
$0.410		 260-14,899
$0.134		 14,900-62,999
$0.067		 63,000+
$0.040

$0.410

  • Model: PR18-N85
  • 9936 in Stock
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The PR-18N85 profile seal is made from high-quality 85 durometer black Nitrile (NBR) and is precision-engineered for static axial sealing in M18 X 1.5 threaded hydraulic fittings according to DIN 3869 specifications. Designed to prevent leakage, twisting, and extrusion, this profile ring ensures superior sealing performance in fluid power systems using mineral oil-based fluids.

This profile seal is commonly used in hydraulic valves, cylinders, and fluid connectors across mobile and industrial equipment. Its advanced geometry provides excellent dimensional stability and minimal deformation under load—delivering better performance than standard O-Rings in threaded ports and screw connections.

#18 DIN 3869 Fluid Connector / Profile Seal – PR-18N85 Nitrile – M18 X 1.5 Fitting

Operating temperature: -22° to +212°F (–30° to +100°C)

Common Applications:

  • Threaded hydraulic ports and screw-in fittings (M18 x 1.5)
  • Agricultural and construction equipment
  • Industrial hydraulic systems and manifolds
  • Pumps, valves, and pressure control systems

Chemical Compatibility:

  • Excellent resistance to:
    • Mineral oil-based lubricants
    • H, HL, HLP hydraulic oils
    • Water up to +80°C
  • Limited compatibility with:
    • Flame-resistant HFA, HFB, HFC fluids (up to +60°C)
  • Not suitable for:
    • Aromatic/chlorinated hydrocarbons
    • Fuels with high aromatic content
    • Glycol-based brake fluids
    • Polar solvents
    • HFD hydraulic fluids

Why Buy PR-18N85 from The O-Ring Store LLC?

Every PR-18N85 profile ring from The O-Ring Store LLC is backed by quality, compliance, and precision:

  • Commercial On The Shelf (COTS) TORS Certificate of Conformance included
  • ISO 9001:2015 certified processes for full quality assurance
  • Free material data sheets on request
  • Olypsys® AI inspection ensures dimensional and visual accuracy
  • Value-added services: kitting, custom labeling, bulk support for OEM/MRO customers

Seal with certainty—only from The O-Ring Store.