MG Chemicals 832FX-450ML Black Flexible Epoxy, 450ml 2-Bottle Kit
MG Chemicals 832FX-450ML — Black Flexible Epoxy | 450ml 2-Bottle Kit | PCB Potting & Encapsulation
MG Chemicals 832FX is a 2-part black flexible epoxy engineered for encapsulation, potting, and protection of printed circuit boards and electronic assemblies in demanding environments. Its very low mixed viscosity (700 cP) allows it to easily penetrate small gaps, cavities, and component-dense areas, while its highly flexible, low-modulus cured state minimizes mechanical stress on components during thermal cycling and vibration. 832FX delivers the environmental sealing capability of silicone with the durability and cost-effectiveness of epoxy.
Part Number: 832FX-450ML | Mix Ratio: 1:1 by volume | Size: 450ml 2-bottle kit.
Specifications
| Part Number | 832FX-450ML |
| Type | 2-part black flexible epoxy |
| Mix Ratio | 1:1 by volume (Part A : Part B) |
| Net Volume | 450 mL (475 g) |
| Packaging | 2-bottle kit |
| Mixed Viscosity | 700 cP (very low — self-leveling) |
| Flexibility | Very flexible, low modulus |
| Color | Black |
| Cure | Room temperature or elevated temperature |
| Chemical Resistance | Water, humidity, salt water, fungus, harsh chemicals |
| Substrate Compatibility | Metals, composites, glass, ceramics, many plastics |
| Manufacturer | MG Chemicals |
Key Features
- Highly flexible, low-modulus cure — remains pliable after cure; absorbs mechanical stress from thermal cycling, vibration, and flexing without cracking or delaminating components
- Very low mixed viscosity (700 cP) — self-leveling; penetrates tight spaces, gaps, and component-dense PCB areas for complete encapsulation without voids
- 1:1 mix ratio — easy to meter by volume; compatible with 2-part dispensing equipment and static mix nozzles for production-volume potting workflows
- Excellent environmental sealing — resists water, humidity, salt spray, fungus, and harsh chemicals; suitable for outdoor, marine, and industrial electronic assemblies
- Electrical insulation — provides ESD protection and electrical isolation for sensitive PCB components
- Silicone-like flexibility without silicone drawbacks — will not migrate or contaminate neighboring surfaces in mixed-process environments
- Black color — provides UV blocking and IP protection for light-sensitive assemblies
Industries & Applications
- Electronics manufacturing — PCB potting and encapsulation for protection against moisture, vibration, and contamination
- Automotive and transportation — protection of ECUs, sensors, and control modules exposed to thermal cycling and vibration
- Marine and outdoor — waterproof sealing of electronic assemblies for submersion-rated and outdoor applications
- Industrial automation — encapsulation of control boards, relays, and sensors in harsh manufacturing environments
- Aerospace and defense — potting of assemblies requiring flexibility across wide temperature ranges and thermal shock conditions
- LED and lighting — flexible encapsulation of LED drivers and assemblies exposed to heat cycling
Frequently Asked Questions
What makes 832FX different from standard rigid epoxies?
832FX is a flexible, low-modulus epoxy — once cured, it remains pliable rather than hard and brittle. This is critical for applications involving thermal cycling, vibration, or mechanical flex, where a rigid epoxy would crack or delaminate over time. The flexibility also reduces stress on solder joints and fragile component leads during temperature excursions.
Can 832FX be used for full PCB submersion or waterproofing?
Yes — 832FX provides extreme resistance to water and humidity, including applications requiring submersion. It creates a waterproof encapsulant around components and assemblies, making it suitable for outdoor, marine, and wash-down environments.
Is 832FX compatible with dispensing equipment?
Yes — the 1:1 volume mix ratio makes it compatible with most 2-part dispensing equipment and static mix nozzles, simplifying production-volume potting and encapsulation workflows. The low 700 cP viscosity also ensures smooth flow through dispensing tips without clogging.
How does 832FX compare to silicone conformal coatings for PCB protection?
832FX provides silicone-like flexibility and environmental protection but with greater durability, better chemical resistance, and lower cost. Unlike silicone, it will not migrate or contaminate neighboring surfaces in mixed-process environments — a common concern when silicone is used near surfaces that need to be bonded or coated later.
What other sizes is MG Chemicals 832FX available in?
In addition to the 450ml 2-bottle kit (832FX-450ML), MG Chemicals 832FX is also available in a 1.7L 2-pail kit (832FX-1.7L) and a 40L 2-pail kit (832FX-40L) for higher-volume production applications.
