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Advanced Fastening and Sealing Technologies
ND Patch® Hi-Temp

ND Patch® Hi-Temp

ND Patch Hi-Temp is a high temperature pre-applied threadlocking coating, which is fused to internal or external threads of a fastener. Dry to the touch and ready for use right out of the box; ND Patch performs immediately upon assembly with no curing time required.


  • ND Patch Hi-Temp maintains its torque performance through temperatures as low as -70°F (-56°C) and as high as +500°F (+260°C).
  • ND Patch Hi-Temp is generally applied to a minimum of 2-3 threads back from the end of the fastener with 4-6 threads of coverage to assure ease of starting the nut/bolt assembly.
  • ND Patch Hi-Temp can be applied to virtually any fastener, from very large construction bolts to tiny cellular phone and computer screws.
  • How ND Patch Hi-Temp works: When a fastener coated with ND Patch Hi-Temp is mated to its corresponding hole or mating fastener, the material is compressed. This compression creates a dam-like action on the opposite side of the coated fastener creating very strong metal-to-metal contact. When ND Patch Hi-Temp is fully seated, it forms a positive lock that will not loosen, even under extreme vibration. This dam-like action also creates a positive seal to be used to prevent leakage.
  • As with all of our pre-applied products, ND Industries can apply Patch Hi-Temp to your fasteners at any one of our regional service centers, or we can supply you with fasteners already coated with ND Patch Hi-Temp.
Click Here for a pdf of how ND Patch works and how to properly torque test.
ProductND Hi-Temp (Reinforced Nylon)
Primary UsageLock & Seal
ColorOrange and Gray**
Reusability5 Cycles
Lead Treads1 to 3
Coating Length4 to 6 Threads
HardnessShore D (ASTM D2240) 70-80 Durometer
Salt Spray Resistance(ASTM B117) 1000+ hours (X scribe)
Taber Abrasion(ASTM D4060) 10-18 mg loss CS-10 wheel, 1000 g load, 1000 cycles. (varies with color)
Dielectric Strength(ASTM D149 short time) 800-1200 volts/mil @ 10.0 mils (varies with color)
Direct Impact Resistance(MPTM 0002) 160 in. lbs. (@10.0 mils)
Temp Resistance-70° to 500°F
On Part Life***Indefinite under ideal storage conditions [+40°F (+4°C) to +90°F (+32°C)], but recertification must occur once a year.
Competes WithNylok® Nytemp®
* When stored in dry, cool environment. ** QPL-18240 & MIL-DTL-18240F requires gray nylon
Patch PressurePatch Threads


  • Retains Full Strength: ND Patch Hi-Temp process involves no drilling or milling, so there is no loss of the fastener's strength or hardness and no troublesome burrs or chips.
  • Saves Money: ND Patch Hi-Temp saves money by pins, or castellated nuts. ND Patch Hi-Temp is also less expensive than applying bottled thread locking compounds at the point of assembly.
  • Saves Time: ND Patch Hi-Temp can be automatically fed through standard bowl feeders without the fear of material coming off.
  • Chemical Resistant: ND Patch Hi-Temp will not dry, shrink, or otherwise be effected when exposed to commercial solvents, alcohol, gasoline, oil, caustic soda, jet fuel, etc.
  • Reusable: Fasteners coated with ND Patch Hi-Temp can be re-used repeatedly without damage to the threads. ND Patch Hi-Temp is particularly resistant to deformation, which makes it ideal for repeated use.
  • Saves Effort: During the ND Patch Hi-Temp process, camera systems are used to verify the parts are coated exactly to customer's specifications. This often removes a secondary sorting operation at the end customer.
  • Fast Turn-Around: The ND Patch Hi-Temp process produces a complete, non-chemically reactive, ready to use product. The ND Patch Hi-Temp performs immediately upon assembly. There is no cure time required.
  • Areas of Application:
    • Automotive
    • Medical
    • Aerospace
    • Construction
    • Electronics
    • Military

Competes With:

Nylok® Nytemp®

ND Patch® Hi-Temp meets or exceeds the performance
requirements of the following specifications
and/or standards:
  • U.S. Military: MIL-DTL-18240F, MIL-N-25027
  • Chrysler: PF-5144, PF-5461, PF-6157, PF-6158
  • Ford: ES-382101-S100, ES-378813-S100, ES-N800688-S100, WA970, ES-21002-S100
  • General Motors: GM 6189P
  • IFI: 124
  • IFI: 524
  • John Deere: JDT905
  • Mack Trucks: 3/6 AXS5, 10 AMS1
  • FMC: 126052
  • Meritor (Rockwell): Q-70