Shore D 85-95 Two Component Epoxy Potting Compound with 20-22 kV/mm Dielectric Strength and 5:1 Mix Ratio

HANAST HN-5508 A/B 85-95 Hardness Electrical Epoxy Potting Compound for Temperature Sensors & Controllers

HN-5508 A/B is a two-component, room-temperature or heat-curable epoxy potting compound developed for the electrical and electronics industry. 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 with high dielectric strength. It is especially suitable for encapsulating temperature sensors, temperature controllers and other electrical components that require reliable insulation, mechanical and moisture protection.

Key Features

• High hardness Shore D 85-95 for rigid, compression- and impact-resistant protection of sensors and controllers
• High dielectric strength of 20-22 kV/mm with volume resistivity of 1.1 x 10¹⁵ ohm.cm for electrical insulation
• Two-part 5:1 system with flexible cure: room temperature (12-16 h) or 60-80°C accelerated (1.5-2 h)
• Low viscosity and long pot life (2-3 h) for easy casting, narrow-gap penetration and automatic dispensing
• High temperature resistance from -30°C to 130-150°C heat distortion temperature
• Acid and alkali resistance, moisture proofing and aging resistance for harsh environments
• 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
• Custom OEM/ODM formulation of colour, viscosity, pot life, hardness and cure speed

Technical Specifications

Cure Options: Room Temperature or Heat Cure

As a two-component system, HN-5508 A/B can be cured at room temperature for 12-16 hours (tack-free in 6-8 hours), or accelerated at 60-80°C in 1.5-2 hours for higher production throughput. Its low viscosity, long pot life and 5:1 mix ratio make it suitable for manual casting as well as automatic dispensing and vacuum degassing production lines.

Applications

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

Factory Direct & Custom OEM / ODM

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

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 which applications does it suit?
A1: HN-5508 A/B is a 5:1 two-component epoxy potting compound with Shore D 85-95 hardness and high dielectric strength. It is widely used for temperature sensors, temperature controllers, transformers, resistors, filters, power supplies, high-voltage packages and circuit boards.

Q2: Is it one-part or two-part, and what are the cure options?
A2: It is a two-part (two-component) epoxy with a 5:1 mix ratio by weight. It can be cured at room temperature in 12-16 hours (tack-free in 6-8 hours), or accelerated at 60-80°C in 1.5-2 hours.

Q3: What are the hardness and electrical insulation properties?
A3: Cured hardness is Shore D 85-95 for rigid protection, with a dielectric strength of 20-22 kV/mm and volume resistivity of 1.1 x 10¹⁵ ohm.cm for reliable electrical insulation.

Q4: What is its temperature and environmental performance?
A4: It withstands -30°C and a heat distortion temperature of 130-150°C, and provides acid/alkali resistance, moisture proofing and aging resistance for harsh environments.

Q5: Can I request samples, and what are the MOQ, packaging and delivery time?
A5: Yes, samples are available. 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, with bulk supply and factory-direct pricing.