JetLube KOPR-KOTE is a copper-based anti-seize and thread lubricant engineered for extreme-temperature, high-load threaded connections. Its formulation combines micro-size copper flakes and graphite dispersed in a water-resistant, petroleum-based grease fortified with antioxidants and rust and corrosion inhibitors. The result is a compound that protects against metal-to-metal contact, resists welding and hardening, and allows rapid disassembly with minimum wrench torque.

What Is JetLube KOPR-KOTE and How Does It Work?

KOPR-KOTE works by filling thread irregularities and imperfections with a low-friction barrier of copper and graphite particles. This barrier cushions impact and shock loads while reducing stick-slip through low shear between particles. Because KOPR-KOTE will not squeeze out of threads, gum up, or wash off, the lubricating film remains intact under sustained contact stress — the product is tested at 80,000 psi contact stress on 1-inch B7 studs.

The compound carries a nut-factor (K) of 0.15, measured per the standard torque relationship T = K × D × F. A lower nut factor means a given wrench torque produces predictable and consistent bolt tension, reducing the risk of over- or under-torquing fasteners on flanges, compressor heads, and exhaust manifold bolts.

What Temperature Range Does KOPR-KOTE Cover?

KOPR-KOTE is rated for continuous service from -65°F (-54°C) to 1,800°F (982°C). This range covers cryogenic valve stems, high-pressure steam flanges, exhaust manifold bolts, and autoclaves in a single product. The compound’s dropping point exceeds 450°F (232°C) per ASTM D-566, and its flash point is above 450°F (232°C) per ASTM D-92, confirming thermal stability well beyond most competitive petroleum-based anti-seize compounds.

Oil separation is held below 3.0 wt. % loss at 212°F (100°C) per ASTM D-6184, meaning the grease matrix does not bleed excessively at elevated operating temperatures — a common failure mode in lower-quality compounds that can leave dry, abrasive solids behind after heat cycling.

How Does KOPR-KOTE Perform Under Load?

The 4-ball extreme-pressure data (ASTM D-2596) quantifies KOPR-KOTE’s load-carrying capacity:

Weld Point: 620 kgf
Load Wear Index (LWI): 125

These values confirm the compound can sustain high-contact-stress applications — pump housings, lathe centers, and autoclaves — without the film rupturing and allowing metal-to-metal welding. Copper strip corrosion rating of 1A (ASTM D-4048) demonstrates the compound does not corrode copper alloy components it contacts.

Penetration at 77°F measures 310–330 (ASTM D-217), placing KOPR-KOTE in the NLGI No. 1 consistency range — soft enough to coat threads uniformly by brush or aerosol, firm enough to stay in place vertically oriented fittings without running or dripping.

What Specifications and Registrations Does KOPR-KOTE Meet?

KOPR-KOTE satisfies multiple industry and government requirements:

NSF Registered H2 (Registration No. 120923) — suitable for incidental food-contact applications (note: aerosol package is not NSF Registered)
MIL-PRF-907F — U.S. military anti-seize performance specification
Raytheon Spec M8656839 Type II — defense/aerospace supply-chain qualification
VOC: 0 g/L — no volatile organic compounds in the base compound
Contains no lead or zinc — compliant with RoHS-aligned formulation requirements and safe for stainless and nickel alloys

Meeting MIL-PRF-907F places KOPR-KOTE in the same performance bracket as compounds used on U.S. Navy shipboard fittings and military aircraft exhaust hardware, providing purchasing engineers a recognized procurement benchmark.

Where Is KOPR-KOTE Applied?

JetLube specifies KOPR-KOTE for threaded connections, pump housings, flanges, studs, exhaust manifold bolts, compressor heads, autoclaves, and lathe centers. The compound permits reuse of fittings by preventing corrosion seizure between service intervals, reducing stud, bolt, and nut replacement costs. It is not affected by contraction, expansion, or vibration — properties critical to cyclic-temperature piping systems and rotating equipment flanges.

KOPR-KOTE is available in bulk container formats and a convenient aerosol package. Aerosol users should note that solid-particle aerosols (copper, aluminum) can clog nozzles; JetLube recommends removing the nozzle, shaking the can for approximately 30 seconds, and reinstalling the nozzle to clear any blockage.

Summary

JetLube KOPR-KOTE delivers a -65°F to 1,800°F service range using micro-size copper flakes and graphite in a petroleum-based, water-resistant grease.
A nut-factor of 0.15 at 80,000 psi contact stress (1-inch B7 studs) enables predictable bolt-tension control on flanges, compressor heads, and exhaust manifold studs.
4-ball weld point of 620 kgf and Load Wear Index of 125 (ASTM D-2596) confirm extreme-pressure film integrity under high contact stress.
KOPR-KOTE is NSF H2 Registered (No. 120923), conforms to MIL-PRF-907F and Raytheon M8656839 Type II, contains no lead or zinc, and has 0 g/L VOC.
Flash point above 450°F (ASTM D-92) and oil separation below 3.0 wt. % at 212°F (ASTM D-6184) confirm thermal stability across the full service range.

Step-by-step

Clean all threaded surfaces and mating contact areas to remove dirt, rust, and old compound before application.
Apply KOPR-KOTE evenly to threads, flanges, or stud surfaces using a brush or aerosol, ensuring complete coverage of irregularities.
If using the aerosol and a clog occurs, remove the nozzle, shake the can for approximately 30 seconds, then reinstall the nozzle to clear the blockage.
Assemble the connection using the nut-factor K = 0.15 in the torque equation T = K × D × F to calculate the correct wrench torque for the required bolt tension.
Confirm the assembly is not affected by vibration or thermal cycling — no re-application is required between service cycles under normal operating conditions.

Products discussed in this episode

KOPR-KOTE Anti-Seize Copper Anti-Seize & Thread Lubricant

Browse all JetLube products on PE Energy Industrial Supply.

JetLube KOPR-KOTE Anti-Seize: How Copper Compound Prevents Thread Seizure from -65°F to 1800°F