For optimal results, follow this field-tested procedure:
Step 1: Surface Preparation Remove loose rust, dirt, and grease. For portable applications, a wire brush or sandpaper is often used since media blasting isn't available. CM352 has excellent wetting ability and can penetrate light surface rust.
Step 2: Shake and Prime If using an aerosol, shake for 30 seconds. If using a pump sprayer, ensure the dip tube is submerged.
Step 3: Apply Thin Coat Hold the nozzle 6-8 inches from the surface. Apply a light, even mist. Do not flood the area. A thin film (approximately 1-2 mils) is more effective than a heavy puddle because it dries uniformly.
Step 4: Allow Flash-Off The solvent carrier will evaporate within 1-5 minutes, leaving a clear, non-tacky barrier. For moving parts, cycle the mechanism once to work the inhibitor into crevices.
Step 5: Reapply as Needed In high-abrasion areas (e.g., a shovel blade), reapply after every 8 hours of use. For static storage, check every 6 months.
Despite its easy application, CM352 is tough. It is designed to withstand harsh environments, including high humidity, salt spray (marine environments), and acidic industrial atmospheres. It does not crack or peel, ensuring that the metal underneath remains pristine for months, or even years, depending on storage conditions.
The demand for Corrosion Inhibitor CM352 Portable is rising as industries shift toward decentralized, agile maintenance strategies. No longer are factories and field sites forced to choose between over-buying bulk drums or using inferior consumer-grade sprays. The portable version offers the same molecular-grade protection as the industrial standard, but in a form factor that empowers technicians to act instantly, anywhere.
Whether you are a solo contractor protecting your tools, a fleet manager winterizing heavy equipment, or a ship engineer battling salt spray, the portable CM352 solution belongs in your kit. It is compact, powerful, and most importantly—effective when you need it most.
Invest in portable protection today. Stop rust before it starts, no matter where the job takes you.
Disclaimer: Always consult the Safety Data Sheet (SDS) for the specific portable CM352 product you have purchased. Formulations may vary between regions and brands. Wear appropriate PPE (nitrile gloves and safety glasses) during application.
In aviation maintenance, a specific corrosion inhibitor recommended by Hartzell Propeller for protecting propeller components
. While "portable" is not a standard part of the product name, the inhibitor is applied manually using portable equipment like spray bottles or brushes during field inspections and service. Application & Use Cases
CM352 is primarily used to prevent oxidation and environmental degradation on critical metal surfaces of aircraft propellers: Counterweights corrosion inhibitor cm352 portable
: It is frequently applied to propeller counterweights, specifically on bolt heads, spring pins, and bolt wells. After Cleaning
: Maintenance protocols often require cleaning corroded areas with solvents (like Stoddard solvent CM23) and abrasive pads before reapplying CM352 to seal the surface. Targeted Protection
: It can be applied to all exposed surfaces of a counterweight to provide a comprehensive protective barrier against moisture and salt. Critical Safety Precautions
Because propellers often include sensitive electrical and anti-icing systems, specific cautions must be followed: Avoid Ice Protection Systems
apply CM352 to terminal strips, de-ice boots, or harnesses. The chemical can interfere with the function of these components. Manual Application
: For precision, it is recommended to spray the inhibitor into a small container first and then use a soft-bristled brush to apply it to specific recesses and hardware. Why It is Used
Propellers operate in high-stress environments where even minor surface pitting from corrosion can lead to structural failure or "unfeathering" issues. Using a specialized inhibitor like Go to product viewer dialog for this item. ensures that: Mounting hardware remains secure and free from rust-welding. Structural integrity
of counterweights is maintained over long service intervals. Field maintenance
can be performed quickly without needing heavy shop equipment. from the Hartzell Service Letter? HC-SL-61-364 - SERVICE LETTER
The CM352 Corrosion Inhibitor is a specialized consumable material primarily used in the aviation industry for the protection and maintenance of propeller blade counterweights. Overview of CM352
Purpose: It is a protective chemical applied to bolt-on steel counterweights to prevent surface corrosion.
Manufacturer Usage: Hartzell Propeller Inc. applies CM352 during the initial assembly of propellers and mandates its use in official service bulletins for ongoing maintenance.
Classification: It is categorized as a "locally procured" consumable material in Hartzell Standard Practices Manuals. Maintenance & Application Story Disclaimer: Always consult the Safety Data Sheet (SDS)
In the field, CM352 plays a critical role in preventing premature component failure caused by moisture or salt exposure.
Inspection: During regularly scheduled intervals—often aligned with propeller lubrication schedules—technicians visually examine counterweights for signs of pitting or rust.
Cleaning: If corrosion is detected, the surface is cleaned using a solvent (like Stoddard solvent CM23) and an abrasive pad.
Protection: CM352 is then applied to create a passivation barrier, which acts as a physical shield against corrosive agents.
Benefits: Proper application increases the reliability of the propeller system, extends the lifespan of the counterweights, and reduces overall maintenance costs by preventing the need for costly parts replacement. Where to Find
CM352 and related aircraft maintenance supplies can typically be found through aviation parts distributors such as Aircraft Spruce or PB Aviation Parts.
CM352 Corrosion Inhibitor is a specialized consumable material primarily used in the maintenance and protection of aircraft propeller components, specifically steel counterweights
. While the inhibitor itself is a chemical compound, its application is a critical "portable" field maintenance task performed by technicians to prevent oxidation on exposed metal surfaces. Hartzell Propeller Application & Purpose Target Components
: Primarily used on bolt-on steel counterweights, bolt heads, spring pins, and bolt wells. Protection Mechanism
: It forms a protective barrier to prevent corrosion and is often used after cleaning surfaces with solvents like Stoddard solvent (CM23) and abrasive pads. Standard Practice Hartzell Propeller Inc.
recommends applying CM352 during assembly and suggests periodic re-application at regular lubrication intervals to ensure extended protection Hartzell Propeller Field Application Process
Technicians typically apply this inhibitor in a "portable" manner using the following field-service steps: Preparation
: Decant the inhibitor from its original container into a smaller cup or container for easier handling. Application soft-bristled brush Dry surface: film adhesion and inhibitor performance are
to apply the compound directly to specified areas like bolt recesses and staking pins. Cautionary Measures : It is vital to keep the inhibitor away from ice protection system components
, such as terminal strips, boots, and harnesses, to avoid damage to those sensitive materials. Hartzell Propeller Related Consumables
In aviation maintenance manuals, CM352 is categorized alongside other consumable materials: : Stoddard Solvent (used for cleaning before application). : Abrasive Pad (used for surface preparation). : Gasket Sealant. Hartzell Propeller
The CM352 Corrosion Inhibitor is a critical consumable material primarily used in the aviation industry, specifically for protecting propeller components like steel counterweights from oxidation and environmental wear. Key Features & Maintenance
Target Application: Specifically formulated to coat bolt-on, steel counterweights during the assembly process to prevent surface corrosion.
Ease of Re-application: It is designed for periodic use. Hartzell Propeller Inc. recommends re-applying CM352 at regularly scheduled maintenance intervals, typically matching the lubrication schedule in the owner’s manual.
Restoration Use: In cases where existing corrosion is found during inspection, the protocol involves cleaning the surface with a solvent (like CM23) and an abrasive pad (CM47) before re-applying CM352 to restore protection.
Standard Compliance: It is listed as a standard consumable material in Hartzell Propeller Standard Practices Manual 202A. Performance Benefits
Extended Protection: Regular application provides a lasting barrier against rust and humidity, which is essential for components operating in demanding flight conditions.
Versatility: While central to propeller maintenance, it is recognized as a general-purpose corrosion inhibitor by aviation parts vendors like PartsBase. Considerations
Specialized Sourcing: CM352 is typically procured through aviation supply chains or specialized retailers like SkyGeek or Aircraft Spruce.
Process Specific: Effective use often requires pre-cleaning the metal surface to ensure the inhibitor bonds correctly and displaces any existing moisture. HC-ASB-61-376.pdf - Hartzell Propeller
Traditional corrosion inhibitors often require complex application setups: dip tanks, spray booths, or fixed piping systems. When a component needs protection at a remote drilling site, during shipping across oceans, or while sitting in a laydown yard, these permanent solutions fall short.
Leaving metal exposed to the elements, even for a short time, invites oxidation. Humidity, salt air, and industrial pollutants act quickly, turning precision machined parts into scrap metal. The industry needed a product that offers the chemical potency of a permanent inhibitor with the logistics of a handheld tool.