DeoxIT D55 Maximum Strength Contact Cleaner – 5 oz Aerosol for Aerospace Electrical Restoration

DeoxIT D55S-6-LMH is the maximum-strength formulation of CAIG’s world-renowned DeoxIT contact treatment product, providing the highest concentration DeoxIT contact cleaning and conditioning chemistry in an aerosol format for aerospace electrical contacts, connectors, switches, and circuit breakers where heavily oxidized, severely contaminated, or high-resistance contact restoration is required. The D55 maximum strength formula is the choice for challenging contact cleaning applications where stubborn oxide films and heavy contamination require the most powerful DeoxIT concentration available.

DeoxIT’s unique contact treatment chemistry goes beyond simple solvent cleaning — the DeoxIT formula chemically reduces metal oxides on contact surfaces, breaking the insulating oxide layer back to clean metal and simultaneously depositing a protective treatment that slows future oxidation development. This dual action provides restoration of electrical contact performance that pure solvent cleaners cannot achieve on oxidized contact surfaces.

The 5 oz aerosol provides a practical field supply of maximum-strength DeoxIT D55 for aircraft electrical maintenance technicians performing connector restoration and contact troubleshooting on aircraft where high-resistance connections are causing avionics and electrical system faults.

Technical Information

DeoxIT D55 contains CAIG’s DeoxIT D-Series active compound at maximum (55%) concentration in a solvent carrier system. The DeoxIT active compound is a proprietary cleaning and oxide-reduction chemistry that reacts with metal oxides — particularly copper, brass, aluminum, and tin oxides common on electrical contact surfaces — reducing them to the base metal and restoring metallic electrical conductivity at the contact interface. This chemical oxide reduction is distinct from the purely physical oxide removal that abrasive contact cleaners or mechanical cleaning provides.

The S-6-LMH suffix indicates the specific nozzle type and application rate of this particular D55 aerosol variant — the LMH (Low-Medium-High) nozzle allows the user to select the spray application rate appropriate for the target (low for delicate components, high for heavy flushing applications). This spray rate control makes the D55 aerosol versatile across the range of aerospace contact cleaning applications.

After applying DeoxIT D55, allow the solvent carrier to evaporate before re-mating connectors. The DeoxIT active compound remains on the treated contact surface as a thin, invisible protective film that maintains contact performance. DeoxIT is compatible with the contact materials and connector body materials of standard aerospace electrical connectors.

Why Choose?

• ✅ Maximum Concentration — Highest DeoxIT strength for stubborn contamination
• ✅ Chemical Oxide Reduction — Beyond simple solvent cleaning
• ✅ Contact Protection — Slows future oxidation after treatment
• ✅ LMH Nozzle Control — Adjustable spray rate for delicate to heavy applications
• ✅ DeoxIT World Standard — The industry’s trusted contact treatment brand

Applications

DeoxIT D55 is used for restoring high-resistance aerospace electrical connectors, avionics interface connections, circuit breaker contacts, switch terminals, and battery terminals where maximum-strength contact treatment is required for effective restoration.

Frequently Asked Questions

Q: What is DeoxIT D55 Maximum Strength?
A: D55 is the maximum-concentration DeoxIT contact treatment — cleaning, chemically reducing oxides, and protecting electrical contacts on aerospace connectors and switches where standard-concentration products are insufficient.

Q: MPN for DeoxIT D55 5oz?
A: MPN is D55-6-LMH.

Q: How is DeoxIT D55 different from other contact cleaners?
A: D55 chemically reduces metal oxides (not just cleans them) and deposits a protective film — providing restoration that pure solvent contact cleaners cannot achieve on oxidized contacts.

Q: What does LMH nozzle mean?
A: LMH (Low-Medium-High) nozzle allows selection of spray application rate — low for delicate components, medium for standard use, high for heavy flushing. This controls product delivery to suit the application.

Q: Should connectors be re-mated immediately after D55 application?
A: Allow the solvent carrier to evaporate before re-mating connectors. The DeoxIT active compound remains as a protective film — the contact surfaces should be clean and dry before connector re-engagement.