Top 10 Conformal Coating Suppliers in El Salvador

Founded in 2005, ESCS has grown from a small local operation to one of the most trusted names in conformal coating in Central America. What sets them apart? Their focus on high-volume production without sacrificing quality. Specializing in pcb conformal coating for automotive electronics, they've worked with major OEMs across Latin America, applying coatings to everything from engine control units to infotainment systems.

ESCS offers a full range of materials—acrylic for cost-sensitive projects, silicone for parts exposed to extreme temperatures, and urethane for chemical resistance. Their 30,000-square-foot facility in San Salvador houses automated coating lines that can handle up to 50,000 PCBs per month, making them ideal for large-scale orders. Certifications like IATF 16949 (automotive quality) and RoHS compliance give clients peace of mind, while their in-house testing lab conducts adhesion, salt spray, and thermal cycling tests to ensure coatings meet strict industry standards.

"We treat every PCB like it's going into our own products," says Maria Gonzalez, ESCS's quality manager. "Our clients trust us because we don't just apply coating—we partner with them to solve problems, whether it's adjusting thickness for a tight tolerance or recommending a material that stands up to coastal humidity."

For medical device manufacturers, precision and compliance are non-negotiable—and ProTech Coatings has built its reputation on delivering both. Since 2010, this San Miguel-based supplier has specialized in circuit board conformal coating for sensitive medical equipment, from heart rate monitors to diagnostic machines. Their niche focus means they understand the unique challenges of the medical industry, like the need for biocompatible materials and strict sterilization resistance.

ProTech's materials lineup includes parylene (a favorite for its ultra-thin, pinhole-free coverage), silicone (ideal for flexibility), and acrylic (for cost-effective, general-purpose use). What really stands out is their ISO 13485 certification, a rigorous standard for medical device manufacturing that ensures every step—from material sourcing to coating application—is documented and audited. Their testing services include USP Class VI testing (for biocompatibility) and humidity resistance checks, critical for devices used in hospitals and clinics.

"Medical devices save lives, so there's no room for error," explains Carlos Mendez, ProTech's founder. "We work closely with our clients' engineering teams to understand their device's intended use, then tailor our coating process to match. Whether it's a tiny sensor or a large imaging system, we ensure the coating protects the board without interfering with performance."

If you're in the consumer electronics space—think smartphones, wearables, or home appliances—CACM is a name you'll want to know. Founded in 2008 in Santa Ana, this supplier has made a name for itself with quick-turn prototypes and high-quality conformal coating electronics for mass production. Their sweet spot? Balancing speed, cost, and quality, making them a go-to for brands launching new products or ramping up production.

CACM's core materials are acrylic and urethane, chosen for their fast curing times and versatility. Their facility features both automated spray systems for high-volume runs and manual application stations for intricate prototypes, ensuring they can handle orders of 100 to 10,000+ PCBs. ISO 9001 certified, they prioritize consistency, with strict quality checks at every stage—from pre-cleaning the boards to inspecting the final coating thickness with precision tools.

"Consumer electronics move fast," says Ana Rodriguez, CACM's sales director. "A client might need a prototype coated in 48 hours to meet a trade show deadline, then scale to 5,000 units the next month. We built our process to be agile, so we can pivot without dropping the ball on quality. Our clients love that they don't have to sacrifice speed for reliability."

When it comes to high-stakes industries like aerospace and defense, precision is everything—and Precision Coat El Salvador delivers. Founded in 2012 in San Salvador, this supplier specializes in high-precision pcb conformal coating for equipment that operates in extreme environments, from fighter jet avionics to satellite components. Their focus on durability and reliability has earned them partnerships with defense contractors and aerospace firms across the Americas.

Precision Coat's material of choice is parylene, known for its ability to conform to complex geometries and provide uniform coverage, even in tight spaces. They also offer silicone coatings for parts exposed to wide temperature swings (-60°C to 200°C). Their AS9100 certification (the gold standard for aerospace quality) and ISO 9001 accreditation ensure compliance with strict industry regulations, while their testing services include altitude testing (to simulate high-flying conditions) and vibration resistance checks.

"In aerospace, a single failed circuit board can have catastrophic consequences," notes Jorge Ramos, Precision Coat's technical director. "That's why we invest in state-of-the-art equipment, like our automated parylene deposition systems, and train our technicians to the highest standards. We don't just coat boards—we engineer solutions that meet the unique stressors of each application."

For brands prioritizing sustainability, GreenShield Coatings is a breath of fresh air. Founded in 2015 in San Vicente, this forward-thinking supplier specializes in eco-friendly conformal coating electronics, using water-based acrylics and biodegradable urethanes that reduce VOC emissions and minimize environmental impact. Their focus on green solutions has made them a favorite among renewable energy companies, IoT device makers, and brands with strong corporate social responsibility goals.

GreenShield's materials are free from harmful solvents, making them safer for workers and easier to dispose of at the end of a product's life. They're also ISO 14001 certified (environmental management), ensuring their entire operation—from waste disposal to energy use—aligns with global sustainability standards. Beyond coatings, they offer consulting services to help clients design more eco-friendly PCBs, from material selection to coating thickness optimization.

"Sustainability shouldn't mean sacrificing performance," says Laura Fernandez, GreenShield's founder. "Our water-based acrylics offer the same protection as solvent-based alternatives, but with a fraction of the environmental footprint. We're proving that you can make electronics that are tough and kind to the planet."

Industrial environments are harsh—think factories with heavy machinery, oil refineries with chemical exposure, or construction sites with dust and vibration. That's where ESEP thrives. Founded in 2003 in San Miguel, this veteran supplier specializes in heavy-duty circuit board conformal coating for industrial controls, sensors, and automation equipment. Their coatings are designed to stand up to the toughest conditions, ensuring machinery stays operational in even the most demanding settings.

ESEP's materials of choice are urethane (for chemical resistance) and silicone (for flexibility and temperature tolerance). Their coating process includes a thorough pre-cleaning step to remove oils and debris, ensuring maximum adhesion, and they offer custom thickness options for clients with specific durability requirements. CE certified, they comply with European safety standards, making them a trusted partner for exports to the EU.

"Our clients operate in environments where downtime costs thousands of dollars per minute," says Miguel Torres, ESEP's operations manager. "They need coatings that can handle oil spills, high humidity, and constant vibration. We've spent years refining our process to deliver that reliability, and it's why clients have stayed with us for decades."

Startups and small to medium-sized enterprises (SMEs) often face a unique challenge: getting high-quality conformal coating without breaking the bank. Enter CoatRight Manufacturing, a San Salvador-based supplier founded in 2018 to fill that gap. Specializing in low-cost conformal coating solutions, CoatRight offers competitive pricing for small-batch orders, making them ideal for startups launching their first product or SMEs with tight budgets.

CoatRight focuses on acrylic and basic silicone coatings, chosen for their affordability and ease of application. While they don't offer the full range of materials or certifications of larger suppliers, they prioritize transparency and customer service, with clear pricing upfront and no hidden fees. Their process is streamlined for efficiency, with quick turnaround times (often 3–5 days for small orders) and a focus on hands-on support for clients new to conformal coating.

"We started CoatRight because we saw too many startups overpay for coating services they didn't need," says Diego Alvarez, CoatRight's founder. "A prototype for a smart home device doesn't require the same coating as a medical implant. We help clients figure out the minimum they need to protect their boards, then deliver it at a price that lets them invest in other parts of their business."

Innovation is at the heart of Advanced Coatings El Salvador (ACE), a 2007-founded supplier in Santa Ana that specializes in custom conformal coating formulations for automotive and IoT devices. What makes ACE unique is their ability to develop tailored coating solutions for clients with specific challenges—whether it's a coating that cures faster, resists a particular chemical, or works with an unusual PCB design.

ACE works with silicone, urethane, and parylene, but their real strength is R&D. Their in-house lab can modify existing formulations or create new ones to meet client needs, such as a UV-curable acrylic for faster production or a flame-retardant silicone for automotive under-the-hood applications. IATF 16949 and ISO 9001 certified, they're trusted by automotive OEMs for their ability to meet strict industry standards while pushing the boundaries of what conformal coatings can do.

"The electronics industry is always evolving, and so are the threats to PCBs," says Sofia Martinez, ACE's R&D lead. "A few years ago, clients weren't worried about 5G interference; now it's a top concern. We stay ahead by investing in R&D, so we can develop coatings that address tomorrow's challenges today."

Data centers are the backbone of the digital age, and their equipment—servers, routers, switches—needs round-the-clock protection. SecureCoat Services, founded in 2013 in San Salvador, specializes in high-reliability conformal coating electronics for data center hardware, ensuring these critical systems stay operational even in the dusty, humid environments of server rooms.

SecureCoat focuses on urethane and parylene coatings, chosen for their dielectric properties (to prevent short circuits) and resistance to dust buildup. Their process includes a post-coating dielectric testing step, ensuring the coating doesn't interfere with signal transmission—a critical factor for high-speed data equipment. ISO 9001 certified, they work closely with data center operators to understand their unique needs, from coating thickness to curing times that minimize downtime during maintenance.

"A single server failure can take down thousands of websites," says Ramon Cruz, SecureCoat's technical consultant. "Our coatings are designed to prevent that by keeping dust and moisture out, while ensuring the boards can still dissipate heat effectively. We don't just protect the hardware—we protect the data that runs the world."

Rounding out our list is Coating Innovations SA, a 2011-founded supplier in San Miguel with a niche focus on medical and dental devices. What sets them apart is their expertise in ultra-thin conformal coatings—often as thin as 1–5 microns—that protect delicate electronics without adding bulk, making them ideal for small devices like hearing aids, dental scanners, and wearable health monitors.

Coating Innovations specializes in parylene and silicone coatings, both known for their ability to provide uniform coverage on small, intricate components. Their ISO 13485 certification ensures compliance with medical device regulations, and they offer biocompatibility testing to ensure coatings are safe for use in or on the human body. They also work with clients to navigate the complex regulatory landscape of medical device manufacturing, from FDA submissions to CE marking.

"Medical devices are getting smaller and more powerful every year," says Patricia Lopes, Coating Innovations' quality assurance manager. "A hearing aid might have a circuit board the size of a postage stamp, with components spaced millimeters apart. Our ultra-thin coatings protect those components without interfering with the device's functionality—something that's non-negotiable in healthcare."