Cortec CorShield® VpCI® 368 11oz 312grm Aerosol Cans | Fast Drying, Solvent Based Temporary Coating | Multi-Metal Outdoor Corrosion Protection Spray for Harsh Environments
Cortec CorShield® VpCI® 368 11oz 312grm Aerosol Cans | Fast Drying, Solvent Based Temporary Coating | Multi-Metal Outdoor Corrosion Protection Spray for Harsh Environments
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Cortec CorShield VpCI® 368® is a high performance fast action, solvent based temporary coating that provides outstanding multi metal protection in the harshest of outdoor environments.
Conforms in full to requirements of MIL PRF 16173 Grade 1 & Grade 2. Available in convenient, easy to use aerosol cans and 5 Gallon (19ltr) & 55 Gallon (208ltr) drum pails for larger, spray/brush on projects.
Designed for unsheltered, exposed environmental conditions Cortec VpCI 368 provides unbeatable multi metal protection. CorShield VpCI 368 can easily be removed with cleaners such as VpCI 414 alkaline cleaner degreaser.
VpCI 368 conforms in full to the commercial equivalents of both MIL PRF 16173 Grade 1 & MIL PRF 16173 Grade 2.
Cortec VPCI 368 produces a ‘wax-like’ consistency and offers multi metal corrosion inhibitor protection, for both ferrous and non-ferrous metals. In addition it is possible to match some custom colours if a ‘same colour as the surface’ solution is required.
NATO 6850-66-132-5848, 6099 & NSN 8030-00-062-6950.
Application Guidance for Cortec Corrosion Inhibitor VPCI 368
Surface Preparation – ensure substrate is grease, oil, dirt and fingerprint free. Also ensure the surface is free from rust inhibitors except Cortec Corporations own compatible product.
As a minimum Valdamark recommends SSPC-SP1 when using over painted surfaces. Where bare metals are concerned, we recommend a NACE ~3/ SSPC-SP6. Consult with technical services or test the systems adhesion prior to a full application works.
VPCI 368 must be agitated and mixed prior to use to obtain a uniform consistency. We recommend using a ‘squirrel cage’ type mixer or a handheld tool, equivalent also. You can also apply the solvent based coating using a spray, brush, roller or dip method.
Typical Equipment Calibrations
Using a conventional spray / HVLP:
- Tip 0.02”-0.11” (0.5-2.8mm) – varies depending on pressures & viscosity readings.
- Air pressure set to between 45 & 55 psi.
- Fluid pressure set to 10 psi.
- Fluid hose should be ⅜” (0.95cm internal dimension) keeping a maximum length of 50 ft (15.2mtr). A ¼” (0.64cm internal dimension) hose can be used but will likely need to be adjusted for proper functioning. Ensure spray gun pot is dual regulated & is kept at the same elevation as the spray gun housing itself.
For Assisted Airless (& Airless) Applications:
- Tip 0.015”-0.035” (0.38-0.89mm) – varies depending on pressure and viscosity readings.
- Pressure set between 1800 & 2500 psi.
- Ensure the hose is ⅜” (0.95cm internal dimension) as a minimum requirement but also a ¼” (0.64cm internal dimension) airless spray gun extension wand may be also be used for convenience. Here a maximum length of 100 ft (30.5 mtr) is suggested.
Post Application & Clean up
You should clean any tools and equipment immediately after use with butyl acetate when the coat is still well. When dry use butyl cellusolve or alternatively MEK for further treatment.
Packaging & Storage
The patented VPCI 368 formula is available in a variety of deliveries & packaging’s. Either as an CorShield® anti corrosion aerosol spray or in 5-gallon (19 litre) pails & 55 gallon (209 litre) steel drums.
Please Note - This product is classified as a speciality chemical product. They are also classified as dangerous goods with the UN number UN1950 as per the ADR transport regulations. Please refer to our terms and conditions & refund policy for specific information around this.
Product Specifications (.PDF)
Frequently Asked Questions
• What exactly is Cortec CorShield VPCI-368, and what's its main purpose?
Cortec CorShield VPCI-368 is a fantastic solvent-based, temporary wax-like coating specifically designed to provide exceptional corrosion protection for various metal surfaces, especially those exposed to really harsh outdoor conditions. Its primary goal is to shield your valuable metal assets from rust and deterioration, even when they're left unsheltered.
• How does CorShield VPCI-368 actually work to prevent rust?
This smart spray uses a unique blend of contact inhibitors and vapor phase corrosion inhibitors (VpCIs). When applied, it creates a durable, wax-like film on the metal surface that acts as a strong barrier against moisture and environmental elements. The VpCIs also vaporize and form a protective molecular layer in the surrounding air, reaching even recessed and hard-to-access areas, providing a comprehensive rust-fighting shield.
• What kind of metals can I confidently use CorShield VPCI-368 on?
You'll be pleased to know that CorShield VPCI-368 offers excellent multi-metal protection. It's perfectly suitable for safeguarding a wide range of metals, including carbon steel, stainless steel, copper, aluminum, and cast iron. So, whether you're dealing with industrial machinery or delicate parts, it's got you covered.
• Is CorShield VPCI-368 considered a temporary or permanent coating?
This is a temporary coating, which is actually a huge advantage! It's designed to provide long-term protection, often multi-year, in outdoor environments, but it can be easily removed when it's no longer needed, making it super versatile for various stages of a metal component's life cycle.
• Does this product offer good resistance to harsh weather conditions, like saltwater or UV rays?
Absolutely! CorShield VPCI-368 boasts excellent resistance to both salt-spray and UV radiation. This means it's an ideal choice for protecting metals in demanding environments, including marine settings or anywhere your equipment faces prolonged exposure to sunlight and rain.
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• What are some common applications where CorShield VPCI-368 really shines?
CorShield VPCI-368 is incredibly versatile! It's often used for protecting pipe coatings, storing spare parts, applying as an underbody coating on vehicles, safeguarding wire ropes, protecting steel plates, and preserving machined parts. It's particularly popular in the oil and gas industry for equipment lay-up and "mothballing" processes.
• Can I use CorShield VPCI-368 for long-term outdoor storage, or is it more for transit?
Yes, it's definitely engineered for long-term outdoor protection, providing coverage for multiple years even in unsheltered conditions. However, it's also excellent for protecting components during transit and shorter-term storage, giving you flexibility.
• Is there a specific version of VPCI-368 that's better for protecting hollow or recessed metal parts?
That's a great question! There's a special version called CorShield VPCI-368 EVP (Enhanced Vapor Phase) which is specifically formulated with an increased VCI effect, making it an excellent "cavity wax" for effectively protecting those tricky hollow spaces within metal parts from rust.
• Can CorShield VPCI-368 be applied directly over existing coatings or finishes, or does it need a bare metal surface?
One of the convenient aspects of this product is that it can be applied over machined, plated, or other metal surfaces, and even over existing coatings or finishes. This flexibility can really streamline your rust prevention process.
• What's the best way to prepare a metal surface before applying CorShield VPCI-368?
For optimal results, the metal surface should be clean and free from grease, oil, dirt, fingerprints, drawing compounds, or any other contaminants that could hinder adhesion. While it's quite forgiving, a minimum surface preparation of SSPC-SP1 is recommended for painted surfaces, and SSPC-SP2 (or even NACE #3/SSPC-SP6 for best results) for bare metal.
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• What are the different ways I can apply CorShield VPCI-368?
You have several options for application: it can be sprayed, rolled, brushed, or even applied by dipping. For the aerosol can version, just give it a good shake before you start spraying!
• How thick should the layer of CorShield VPCI-368 be for effective outdoor protection?
For robust outdoor applications, a recommended dry film thickness (DFT) of 2.0-3.0 mils (50-75 µm) is generally advised to ensure maximum protection against the elements.
• What does the film look like after CorShield VPCI-368 dries? Is it tacky or dry?
After application, CorShield VPCI-368 dries to a firm, non-tacky, wax-like film. This is really beneficial because it means the coated surface can be handled easily without transferring to hands and it won't attract excessive dust or dirt.
• How long does it typically take for CorShield VPCI-368 to dry to the touch and to fully cure?
You'll find that it usually dries to the touch within 0.5 to 3 hours, which is pretty quick! However, for a full cure, you should allow approximately 16-24 hours under normal conditions. In some cases, full cure can take 3-7 days.
• What's the expected shelf life of CorShield VPCI-368 if stored correctly?
When stored in its original packaging, indoors, and out of direct sunlight between 40-100 °F (4-38 °C), CorShield VPCI-368 has a reliable shelf life of two years.
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• Does this product contain any harmful chemicals like nitrites, chromates, or phosphates?
No, thankfully, CorShield VPCI-368 is formulated without nitrites, chromates, or phosphates, which is a big plus for both environmental considerations and user safety.
• Can CorShield VPCI-368 tolerate high temperatures once it's cured?
Yes, the cured film of CorShield VPCI-368 is quite heat stable, offering protection up to 392°F (200°C), which is impressive for a temporary coating.
• Is CorShield VPCI-368 conductive, or does it offer electrical insulation?
This coating forms a non-conductive film, which is beneficial as it provides excellent insulating and resistance properties, making it an effective protector against galvanic corrosion between different metals.
• What's the flash point of CorShield VPCI-368?
CorShield VPCI-368 has a relatively high flash point of over 60°C (140°F), which contributes to its safe handling and storage.
• How easy is it to remove CorShield VPCI-368 once I no longer need the protection?
It's surprisingly easy to remove! CorShield VPCI-368 can be readily removed using alkaline cleaners, such as Cortec's VpCI-414, or even mineral spirits and other common petroleum solvents.
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• Do I need any special equipment or processes to remove the coating?
No complex equipment is typically required. Simple washing with an alkaline cleaner, or wiping with solvents, will usually suffice to remove the wax-like film.
• Are there any specific safety precautions I should take when using CorShield VPCI-368?
As with any solvent-based product, it's always wise to ensure good ventilation in your work area. Wearing appropriate personal protective equipment like gloves and eye protection is also recommended. Refer to the product's Safety Data Sheet (SDS) for detailed safety information.
• Can CorShield VPCI-368 be applied to surfaces that already have some light rust?
Yes, in many cases, CorShield VPCI-368 can be applied to surfaces that already exhibit light rust or even some oil, thanks to its penetrating and moisture-displacing film properties. However, for best results, proper surface preparation is always recommended.
• Where can I typically purchase Cortec CorShield VPCI-368?
You can find Cortec CorShield VPCI-368 from authorized distributors like Valdamark Direct, as well as on various industrial supply websites and marketplaces.
• Does Cortec CorShield VPCI-368 come in different packaging sizes?
Yes, it's available in several convenient sizes to suit different needs, including aerosol cans for smaller jobs or touch-ups, 5-gallon pails, and even larger 55-gallon drums for industrial-scale applications.
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• Is the aerosol version of CorShield VPCI-368 readily available for smaller projects?
Absolutely! The 11 oz. (312g) aerosol can is a very popular option for smaller projects, touch-ups, or when you need the convenience of a spray application without the need for bulk equipment.
• What makes Cortec CorShield VPCI-368 stand out from other temporary corrosion protection sprays?
Its unique combination of contact and vapor phase corrosion inhibitors (VpCIs) provides a more comprehensive and robust protection, especially in challenging outdoor environments. The easy removability and non-tacky film are also significant advantages compared to many other wax-based coatings.
• How does its performance compare to more traditional anti-rust oils or greases?
CorShield VPCI-368 offers superior long-term outdoor protection compared to many conventional oils. The wax-like film is less prone to wash-off and doesn't attract as much dirt, and the VpCI action provides an added layer of protection in enclosed spaces that oils might not reach as effectively.
• Does Cortec CorShield VPCI-368 conform to any industry or military specifications?
Yes, it often conforms to important specifications such as MIL-PRF-16173E (Grades 1 and 2), and other relevant NATO and NSN codes, which speaks volumes about its quality and reliability in demanding applications.
• What are the key advantages of using a VpCI-based coating like CorShield VPCI-368?
The main advantages are its multi-metal protection, ability to protect in both direct contact and vapor phases (reaching recessed areas), excellent long-term outdoor performance, UV and salt-spray resistance, non-tacky film, and easy removability. It's a comprehensive solution for challenging corrosion problems.
