1 / 5MG Chemicals 4226A-1L Clear Insulating Varnish, 945 ml
MG Chemicals 4226A clear insulating varnish is a liquid polyurethane coating listed for electrical insulation and protection against arc, corrosion, and moisture. Its listed 945 ml volume is less than the 1 L can wording in the title, so confirm the package size for the selected listing.
At a glance
- Listed for insulating high-voltage components, including transformers, coils, motor windings, and generator parts.
- Manufacturer describes the coating as low-viscosity, one-part, and adherent to many substrates.
- The product description claims protection under high humidity and high temperature conditions.
Pros and cons
Pros
- Liquid, one-part formulation is described as easy to use and adherent to metals, glass, and most common plastics.
- The stated protection covers arc, corrosion, and moisture, making it relevant to electrical assemblies.
Technical specifications
11 specifications| Brand | MG Chemicals |
|---|---|
| Model | 4226A-1L |
| Material listed | Polyurethane (PU) |
|---|---|
| Item form | Liquid |
| Finish | Gloss |
| Recommended use | Exterior, Interior |
| Compatible materials | Metals, Glass, Most common plastics |
| Listed protection | Arc, corrosion, and moisture protection |
| Liquid volume | 945 ml |
| Standards claim | Meets UL EIS Standards |
|---|---|
| Dielectric strength claim | 3 000 V/mil |
What to know before buying
Listing details to confirm
The title says 1 L, while the product details list 945 ml. The model ends in 1L, but the stated liquid volume remains 945 ml. Confirm the volume and selected package before purchase. The listed rating is uniformly five-star but based on only a small number of ratings, with no written feedback supplied, so it does not establish application-specific performance.
Who is it for?
A good fit for
- Electrical technicians or repairers coating transformers, coils, motor windings, and generator parts.
- Buyers seeking a clear, glossy polyurethane insulating varnish for metal, glass, or common plastic substrates.
Less suited to
- Buyers who require a confirmed full 1 L volume or an explicitly documented package inventory.
- Buyers needing an independently verified performance rating or application instructions not provided in the listing.

Customer reviews on Amazon
- 5 stars
100% 100% - 4 stars
0% 0% - 3 stars
0% 0% - 2 stars
0% 0% - 1 star
0% 0%
The supplied evidence contains only aggregate ratings, not written customer feedback. The ratings are uniformly five-star but come from a small sample, so they offer limited context and do not show whether the varnish worked well for particular electrical applications.
Frequently asked questions
How much varnish is listed?
The product details state 945 ml, while the title says 1 L. Confirm the volume in the selected listing before ordering.
What materials does the listing say it adheres to?
It lists metals, glass, and most common plastics as compatible materials.
What protection is it intended to provide?
The listing describes arc, corrosion, and moisture protection for electrical parts, including transformers, coils, motor windings, and generator parts.
Does the listing provide customer comments?
No written customer feedback is supplied. The aggregate rating reflects a small set of ratings and cannot explain user experiences or verify performance.

Alternative options

100ml Conformal Coating for Electronics, Insulating Sealant, Clear | Waterproof, Du...
$12.89

200ml Conformal Coating for Electronics, Insulating Sealant, Clear | Waterproof, Du...
$18.89

Gloss & Matte Varnish for Acrylic Painting, 2 x 100ml Clear Acrylic Varnish | Acryl...
$20.99

10AWG THHN Wire 50 FT, Single Bare Copper Conductor with PVC and Nylon Insulation, ...
$39.99

BNTECHGO 22AWG FEP Teflon Coated Wire 2 Color Each 50ft Tin-Plated Copper | 22 Gauge Strands Wire High-Temp FEP Insulation, -65°C to 200°C Rated, Aerospace Wiring, Medical Wiring, Scientific Equipment
$13.98

Acrylic Varnish High Gloss, 8.45 fl oz Acrylic Paint Sealer | Brushable & Airbrusha...
$12.16

100ml Air Dry Clay Glaze, Protect Clay Surfaces,Delivers Gloss Glaze Effect | Gloss Glaze, Air Dry Clay Varnish, Waterproof, Dustproof, Prevents Clay Scratches & Wear
$14.99

Gloss Varnish for Acrylic Painting, 100ml Clear Acrylic Varnish | Acrylic Paint Sea...
$13.99

Non-Flammable Electronic Contact Cleaner Aerosol Spray - Safely Cleans Joysticks, C...
$30.99

3140 RTV Coating 100ml Adhesive Sealant Translucent Clear Binding Agents Electrical...
$24.99

100ml Conformal Coating for Electronics, Clear Silicone PCB Sealant | Low-viscosity...
$11.99

3140 RTV 1.8 oz Tube Silicone Sealant/Adhesive High Temperature Resistant, Waterpro...
$25.99