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Your cart is empty.Our 4223F polyurethane conformal coating is a heat curing, one part product that provides an excellent scratch, chemical resistant finish, meets UL 94-V0, and free of xylene and other hazardous air pollutants. This one part coating is easy to use and repair: it does not require special or costly equipment or materials. It is ideal for chemically challenging environments. The 4223F urethane protects electric circuits against aggressive chemicals, moisture, dirt, dust, thermal shocks, and scratches. This avoids corrosion and physical damages to electric components. It insulates against high-voltage arcing, shorts, and static discharges, allowing for traces to be put closer to one another.
Jean-Pierre Bourgoin
Reviewed in France on February 24, 2025
Très bon rapport qualité prix
Hemi Power
Reviewed in Canada on March 6, 2024
The company offers acrylic, urethane and epoxy products for electronics board protection or other uses. I choose the urethane as it's more durable than the acrylic but not as tough as the epoxy. Urethane is very durable and thicker and flows well. The urethane base rests in the middle regards cost and durability. Have used these products before and work well. I will be spraying a dishwasher circuit board that is known for moisture buildup and then developing shorts. This product is good for cheap preventative maintenance. No complaints.
Nicolas Maumy
Reviewed in France on March 5, 2024
Très bon produit, c'est pas donnée mais la qualité est là.Ce vernis est idéal pour isoler les composants (circuit électronique) des perturbations externe du aux variations de température, l'humidité ...Il s'applique bien avec l'aérosol et permet avec une bombe de couvrir une belle surface.En 2-3 couches, c'est déjà bien épais et ça protège vraiment bien. Attention, une fois appliqué ça ne bouge plus, donc difficile à enlever.Attention à la buse qui se bouche vite car le vernis est épais. Ne pas respirer les émanations bien entendu.
Ben Reilly
Reviewed in the United States on March 4, 2024
This stuff lays down a nice, fairly flat, fairly thick layer of poly coating. Great for waterproofing a board I was working on and reducing the effects of vibration.
Kave
Reviewed in the United Kingdom on December 12, 2024
Excellent
Dr. B
Reviewed in the United States on September 17, 2023
I can't stress enough how valuable this conformal coating has been in safeguarding my PCBs, especially those I anticipate will be exposed to high humidity or outdoor conditions. In fact, I've made it a rule of thumb to apply conformal coating to virtually any outdoor PCB, regardless of whether it's in a covered location. The reason is simple – even humidity can be surprisingly corrosive over time, leading to damage in solder joints and sensitive components.Applying this conformal coating is a breeze, and I appreciate how user-friendly it is. It doesn't require a complicated application process, making it accessible even for those with limited experience in PCB protection. What truly sets it apart is its durability. Once applied, I can trust that it forms a reliable barrier against the elements, ensuring the longevity and performance of the PCB.In essence, this conformal coating has become an essential step in my PCB protection process, especially for any electronics exposed to outdoor or high-humidity environments. It's a cost-effective and practical solution that adds an extra layer of defense, ultimately extending the lifespan of valuable electronics. If you're looking to enhance the durability of your PCBs and safeguard them against humidity or outdoor conditions, I wholeheartedly recommend giving this conformal coating a try.
Mack Gibbons Jr.
Reviewed in the United States on August 12, 2023
Used to spray a replacement circuit board on my max fan in my camper that may be subject to moisture contamination. So far no problems.
Mr B J Cochrane
Reviewed in the United Kingdom on April 7, 2023
Bought to preserve some 70's vintage PCBs with no solder-mask following a repair (and noticing a lot of fingerprints etched into the traces...)Goes on really nicely with good build-up, dries fully in a couple of hours without too much odour so I was able to use it indoors. I missed something on one board and was able to solder through the coating with no problems - no need to strip it or use a ton of flux.I've always avoided conformal coatings but would definitely use this again.
R. A. Maston
Reviewed in the United States on December 4, 2022
Easy to apply in even coatings. I use to protect PCB assembly for harsh corrosive environments. I apply in single coat a few mils thick and is dry enough to complete assembly in a few hours at room temperature. Highly recommended over acrylic types.
J. B
Reviewed in the United States on April 11, 2022
Needs to be cured in an oven on low heat but it performed well and didn’t leave an odor or residue. Used on an RV heater board notorious for water damage. Applied this to the new board and it looks very well sealed and works great. Expect it to last much longer.
Caleb Washburn
Reviewed in the United States on October 12, 2021
This stuff is impressive. It forms a very thin but durable protective barrier after curing for a couple minutes at 100C. It even survived 24hrs in pirhana solution with zero visible corrosion!Edit: 99% IPA works great for removing it if necessary. Let the PCB boil in the alcohol for 10-15 minutes and it can be scrubbed off with a toothbrush.
Dan
Reviewed in the United States on April 19, 2020
We use this for industrial controls production. It coats well, protects well. We heat it to 105c for 1.5 hours to cure. Its leaves a nice & thick coat, which can make re-work not as easy as some, but the protection more than makes up for it in our application. Regular conformal coating remover does work, as does 99% IPA, should you need to re-work and its not a situation where you can burn through. You will want full PPE to use this stuff though, including a full face respirator and OV cartridges. This is meant for industrial use only, so be aware of that for your PPE needs! This stuff has an incredible amount of fumes, but again, its intended for the industrial market.
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