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11 Oz Aerosol 20 Oz Spray Bottle 1 Gallon
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LPS 3 Premier Rust Inhibitor is a specially formulated long-term corrosion inhibitor protecting metal parts in inside storage for up to two years. When applied it forms a soft, transparent, waxy film sealing out moisture, air, acid, alkali fumes, and other corrosive elements.


  • Protects for up to 2 years indoors
  • Prevents rust and corrosion
  • Safe on all metals
  • Safe to use on rubber, fabric, plastics, and paints
  • Inhibits exfoliation and filiform corrosion of aluminum
  • Safe on all metals
  • NSF Certified: H2 Registration #129027 (Aerosol); #059849 (Bulk)
  • Acceptable for use in Canadian Food Processing Establishments
  • Penetrates to displace moisture


Appearance/Physical State: Cloudy/Liquid
Odor: Mild. Cherry
Melting Point/Freezing point: Not Available
Boiling Point/Range Aerosol: Not Available, Bulk: 320-392F
Vapor Pressure Aerosol: Not Available, Bulk 2.6 mm Hg @20C
Partition Coefficient: Not Available
Percent Volatile Aerosol: 63-82 %, Bulk: 78.45%
Flammability Limit: Lower 0.6, Upper 6%
Propellant Aerosol: Carbon Dioxide, Bulk: N/A
VOC Content Aerosol: 62.8%, Bulk: 75.58%
Color: Brown
Flash Point: Aerosol 64.4F, Bulk 104.5F
Relative Density: Not Available
Evaporation Rate: Aerosol - 151 (Ethyl Ether), Bulk: 0.2 (butyl acetate=1)
Vapor Density: Aerosol: Not Available, Bulk 4.8
Auto-Ignition Temperature: 446F (230C)
Viscosity: Aerosol-Not Available, Bulk: 20-550cP
Specific Gravity (water=1): Aerosol: 0.87, Bulk: 0.81
Temperature Range F(C): Not Available
4-Ball Weld Load: Not Available


  • Aircraft Fuselages, Battery Terminals, Cables, Chains, & Pulleys, Cargo Sections, Elevators, Metal Parts, Offshore Drilling Equipment, Outdoor Electrical Connections, Outdoor Equipment & Tools, Overseas Storage or Shipments, Pumps & Hose Assemblies, Interior Sections of Vehicle Doors
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Love this stuff. Has many uses from cable lube and protect-ant for my outdoor car hoist to clean and lube my motorcycle chain. Evaporates off and leaves a waxy lube protection.

December 6, 2019

Seems to be a great product. Iâm using it as a rustproofing on my new Silverado. Time will tell the longevity but it applies well and has good even coverage. I have since used it in 3 more vehicles. Hopefully it last through one winter.

October 21, 2019

I use Lps 3 to help prevent corrosion on automotive brake lines. Great product, but difficult to find in local stores.

Rick S
October 11, 2019

fantastic product. used it to undercoat my 2019 Silverado. time will tell the longevity. great service and fast shipping from aircraft spruce.

Jeff S
September 29, 2019

Great easy to use lubricant for all your aviation needs.

W. J
March 1, 2019

Product has protected our Bell 206 blades for over thirty years. Have never had a blade corrosion repair since I started wiping blades down weekly with LPS3. Shipping from Aircraft Spruce is a problem. Two of four gallons bottoms were deformed in shipment. They arent leaking, but dont want to stay upright.

Ronald M
April 5, 2018

Ok in certain applications. does not penetrate like corrosion x or acf-50. It is NOT a lubricant, it doesnt penetrate well and leads to messy, dirt attracting buildup. I wish people would not use it as a lube. My view is that it only seals things off and should be used thoughtfully as it will also seal things like moisture IN.

Mike H
August 15, 2019


Q: Does LPS 3 premier rust inhibitor meet MIL-C-16173 Grade 2?

Yes, it meets MIL-PRF-16173E Grade 2 Class 1. Please see the Approvals tab for additional spec info.

Q: Can LPS 3 be used as primer, directly on rusty surfaces, then painted over?

LPS 3 cannot be used in the manner described. It can be applied to a dry, rusted surfaces that has had any loosely adhered corrosion removed. It will not convert the rust but will halt further corrosion from occurring. It cannot be painted over.

Q: curious if LPS 3 can be a substitute for polishing and waxing my painted Cessna 182 external fuselage if applied frequently (every 2 weeks?). The aircraft lives outside in Hawaiis salty air and hot sun.

I believe it would be safe, but it is brown in color and could stain the paint. I would not recommend it for this application.

Q: Is it safe to spray this inside an aircraft engine cylinder if its going to be parked up for a while?

This product is a common use product, not aviation specific. It does not have a specific approval application guide. You would need to check your engine manual for storage procedures.

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