Varnishes, Adhesives and Lubricants for Electronics
Everything you need to protect, repair, and maintain your electronic devices. High-quality products for professionals and enthusiasts alike.
Why use varnishes, adhesives and lubricants in electronics?
Varnishes, adhesives and lubricants for electronics are essential elements in the world of repair, maintenance, and protection of circuits and devices. It’s not just about adding products out of habit or aesthetics, but about meeting three key technical goals:
- Protecting sensitive electronic components: Conformal coatings act as barriers against moisture, dust, harsh chemicals and extreme environmental conditions.
- Reliable component fixing: Adhesives specifically formulated for electronics ensure a durable bond, free from electrical interference and with excellent thermal resistance.
- Reducing friction and wear: Specialised lubricants for connectors, mechanisms and moving parts ensure smooth operation and extend device life.
Types of varnishes for electronics
At Electrónica Embajadores, you’ll find varnishes with specific properties designed for professional applications. The most common types include:
Acrylic varnishes
Acrylic varnishes are popular for their balance between protection and ease of application. They form a clear layer that resists moisture and offers good thermal stability. Ideal for PCBs used in standard conditions.
Silicone varnishes
Used in high-temperature environments, silicone varnishes are flexible, chemically resistant and durable. Common in automotive, robotics and industrial machinery, they withstand constant thermal cycling well.
Polyurethane varnishes
They offer superior chemical resistance and excellent moisture protection. Recommended for harsh environments or outdoor-exposed circuits. They dry more slowly but result in a more robust coating.
Epoxy varnishes
Extremely resistant, epoxy varnishes offer maximum mechanical protection. They harden into a rigid, strongly adhesive layer, although less flexible than other types.
Specialised adhesives for electronics
The use of technical adhesives in electronics not only allows for component fixing but also protects against vibrations, impacts, moisture, and contaminants. Electrónica Embajadores' catalogue includes:
- Epoxy adhesives: Two-part systems that provide excellent dielectric properties, high thermal resistance, and strong adhesion to various materials (metal, ceramic, plastic).
- Cyanoacrylate adhesives: Fast-setting glues ideal for small, precise repairs. Not heat-resistant, but very useful for quick fixes.
- Technical pastes: Epoxy pastes used to fill gaps, rebuild parts, or reinforce structures. Once cured, they can be sanded and painted.
- Conductive adhesives: Enriched with metallic particles (often silver), they allow for electrical connections without soldering. Ideal for repairing ribbon cables or fragile connectors.
Lubricants for electronic applications
Lubricants for electronics are essential to ensure the longevity and smooth functioning of moving mechanisms, switches, connectors and electrical contacts. These products reduce friction, prevent corrosion, and in some cases, improve conductivity.
Dielectric lubricants
These are insulating oils or pastes that do not conduct electricity. They protect against moisture and corrosion while preventing short circuits. They also act as sealing agents.
Conductive lubricants
Containing metallic particles (silver or carbon), they improve conductivity in weak connections. Recommended for switches, keyboards, relays or damaged tracks.
Technical greases
Lithium or silicone greases used to lubricate moving mechanisms in electronic equipment. Resistant to ageing and high temperatures, and safe for plastics. Perfect for printers, readers, or micro-gears.
Precision lubricant sprays
Sprays formulated to clean, lubricate, and protect in one application. Ideal for preventive maintenance and hard-to-reach areas. They often leave a protective film after evaporation.
Common uses in electronics maintenance and repair
Varnishes, adhesives, and lubricants have many applications, from one-off repairs to large-scale production. Examples include:
- PCB protection: Applying conformal coatings to isolate against moisture and contaminants.
- Track repair: Conductive glues or repair varnishes to restore continuity without soldering.
- Heavy component fixing: Epoxy adhesives to secure transformers, relays or large connectors to boards.
- Connector maintenance: Dielectric lubricants to ease insertion, prevent interference and avoid oxidation.
- Wear prevention: Technical greases used on internal gears and mechanisms in electronic devices.
Advantages of specialised products
Using products specifically designed for electronics, such as those offered by Electrónica Embajadores, brings many benefits:
- Extended equipment life: Less wear, less oxidation, and fewer humidity-related faults.
- Electrical reliability: Fewer short circuits, signal losses or interference.
- Lower repair costs: Good prevention is cheaper than replacing a board or component.
- Compatibility with sensitive materials: Unlike generic products, these won’t degrade plastics, polymers or silicones.
- Easy and safe application: Available in sprays, syringes or brush-cap bottles for practical use.
How to choose the right product?
The right varnish, adhesive or lubricant depends on the type of repair, operating environment, materials involved and electrical constraints. Here are some tips:
- For humid or outdoor environments, choose a polyurethane or epoxy varnish.
- For quick applications, opt for cyanoacrylate glue or fast-setting paste.
- To improve contacts, use a conductive lubricant.
- To prevent connector oxidation, use a dielectric lubricant.
- For vibration-exposed devices, go for a flexible silicone adhesive or acrylic varnish.
Available formats and product presentation
Products from Electrónica Embajadores come in various formats, suitable for professionals, hobbyists, and educational institutions. Common options include:
- Sprays: For fast, even application – used for varnishes, lubricants, or cleaners.
- Syringes and precision applicators: Allow small quantities to be applied accurately – great for conductive glues or component-level pastes.
- Tubes and bottles: Ideal for medium quantities, often used for epoxy adhesives or thermal pastes.
- Industrial packaging: Available on request for large-scale production or professional workshops.
