HN-5508AB Chemical Resistant Epoxy Potting Compound with Shore D 85-95 Hardness and 20-22 kV/mm Dielectric Strength for Electronics

HANAST HN-5508 A/B Chemical Resistant Black Epoxy Potting Compound (Bulk Supply) for Electronics and Transformer Encapsulation

HN-5508 A/B is a two-component, room-temperature or heat-curable epoxy potting compound engineered for chemical and mechanical protection of industrial electronics. Mixed at a 5:1 ratio by weight, it flows with low viscosity and long pot life, penetrates narrow gaps, and cures into a smooth, glossy, high-hardness (Shore D 85-95) black encapsulant. Its outstanding acid/alkali resistance, moisture proofing, aging resistance and high dielectric strength make it a reliable choice for transformers, power supplies, sensors and other components exposed to harsh industrial, automotive and marine environments. Available for bulk supply with factory-direct pricing.

Key Features

• Excellent chemical resistance: acid and alkali resistant, moisture proof and aging resistant for harsh conditions
• High hardness Shore D 85-95 for rigid, impact- and compression-resistant protection
• High dielectric strength of 20-22 kV/mm with volume resistivity of 1.1 x 10¹⁵ ohm.cm
• High temperature resistance from -30°C to 130-150°C heat distortion temperature
• 5:1 two-component epoxy system, room-temperature cure or 60-80°C accelerated cure
• Low viscosity and long pot life (2-3 h) for easy casting and narrow-gap penetration
• High compressive strength (18-22 kg/cm²) and high bonding strength
• Cures to a bubble-free, smooth, glossy surface with low shrinkage (0.35-0.55%)
• RoHS compliant and classified as non-dangerous goods for global shipment
• Bulk supply and custom OEM/ODM formulation of colour, viscosity, pot life, hardness and cure speed.

Technical Specifications

Chemical & Environmental Resistance

HN-5508 A/B is formulated to withstand demanding industrial conditions. The cured encapsulant resists attack by acids and alkalis, repels moisture and humidity, and resists aging, protecting sensitive electronics in automotive, marine, industrial, outdoor and other harsh environments where ordinary potting materials degrade.

Applications

HN-5508 A/B is widely used for potting and protection of electronic and electrical components: transformers, resistors, filters, power supply modules, sensors and temperature controllers, high-voltage packages, high-voltage ignition coils, circuit boards (PCB), aquarium equipment, ultrasonic atomizers, negative-ion generators, and industrial, automotive and marine electronics exposed to chemicals, moisture and vibration.

Factory Direct & Bulk Supply

Hanast is a direct potting compound factory based in Guangdong, China, with a dedicated R&D laboratory. We supply HN-5508 A/B in bulk across Asia and worldwide with factory-direct wholesale pricing, and offer custom OEM/ODM formulation of colour, viscosity, pot life, hardness and cure speed to match your design, with samples delivered in 3-5 working days.

Packaging & Storage

Supplied as Component A (25 kg plastic barrel) and Component B (5 kg plastic pot), or as a ready 30 kg/set kit, with bulk packaging available for volume orders. Store in original, tightly sealed containers in a cool, dry, well-ventilated area at around 25°C, protected from direct sunlight, moisture and extreme temperatures. Shelf life is 6 months from date of manufacture. Classified as non-dangerous goods for transport.

About this supplier

Shenzhen Hanast New Material Co., Ltd. is a premier high-tech enterprise and leading source manufacturer specializing in the R&D, manufacturing, and global supply of industrial silicone materials. As a strategic branch of the renowned Shenzhen Kanglibang Technology Co., Ltd., Hanast integrates over a decade of chemical adhesive expertise with a cutting-edge 40,000-square-meter modern production base (including our newly expanding Jiangmen facility) to deliver high-capacity, reliable material solutions worldwide.

We serve as a vital tier-one supplier and OEM/ODM partner for global factories, procurement managers, and engineering teams across diverse sectors, including electric vehicles (EV), battery energy storage systems (BESS), solar inverters, LED lighting, and industrial automation.

FAQ

Q1: What is HN-5508 A/B and what makes it chemical resistant?
A1: HN-5508 A/B is a 5:1 two-component black epoxy potting compound. Its cured matrix provides excellent acid and alkali resistance, moisture proofing and aging resistance, so it protects electronics in harsh chemical and humidity environments.

Q2: Which environments and applications is it suitable for?
A2: It suits transformers, resistors, filters, power supplies, sensors, high-voltage packages, aquarium equipment and industrial, automotive and marine electronics exposed to chemicals, moisture, heat and vibration.

Q3: What are the mix ratio and curing schedule?
A3: Mix Component A and Component B at a 5:1 ratio by weight. Pot life is 2-3 hours at 25°C (100 g mix); it is tack-free in 6-8 hours and fully cured in 12-16 hours at 25°C, or in 1.5-2 hours at 60-80°C.

Q4: What are the hardness, insulation and temperature properties?
A4: Cured hardness is Shore D 85-95, dielectric strength is 20-22 kV/mm and volume resistivity is 1.1 x 10¹⁵ ohm.cm. It withstands -30°C and a heat distortion temperature of 130-150°C.

Q5: Do you supply it in bulk, and what are the MOQ, packaging and delivery time?
A5: Yes, we offer bulk supply across Asia and worldwide with factory-direct pricing. MOQ is 1 kg, supplied in 30 kg/set kits (25 kg A + 5 kg B). Samples ship in 3-5 working days and bulk orders in 7-15 days.