UV Resistant Anti Yellowing Crystal Clear Epoxy Potting Compound with 2:1 Mix Ratio for LED Signage Encapsulation

HN-5506A/B is a two-component high-transparency epoxy crystal glue. It combines low viscosity, excellent self-levelling and built-in defoaming with a long room-temperature pot life, so it fills moulds and housings evenly and releases air without vacuum equipment. After curing it forms a crystal-clear, high-hardness material with strong adhesion, low cure shrinkage, moisture, water, oil and dust protection, and resistance to weathering and UV yellowing. The formula can be adjusted to customer requirements and is RoHS compliant.

• High transparency and high hardness Shore D 78-83 after cure
• UV resistant and anti-yellowing for long-term clarity in lighting and outdoor applications
• Excellent weathering resistance and low cure shrinkage
• Low viscosity 800-1400 mPa·s with good flowability and self-levelling
• Built-in defoaming for bubble-free, optical-quality surfaces
• One-time pouring up to 3-5 cm thickness at 25 °C
• Cured surface is sandable and polishable
• Excellent adhesion and mechanical properties, with shear strength above 5 mPa on ABS/ABS
• Moisture-proof, waterproof, oil-proof and dust-proof
• RoHS compliant and suitable for export

• LED and signage: LED resin luminous characters, LED signage, light boxes, label doming, crystal doming and badge doming
• Display and lighting: display modules, digital tubes, photo surface coating, underwater lights and LED lighting fixtures
• Electronics: encapsulation, bonding and sealing of electronic products, power modules, PCB assemblies and high-voltage insulation parts
• Decorative and craft: river tabletops, large transparent items, crystal craft moulding, resin art castings and DIY handicrafts
• General industry: transparent potting of sensors, connectors and small electronic assemblies

All values are measured at 25 °C after the recommended cure schedule and are for reference only.

1. Pre-mix: Stir Component A thoroughly before use. If crystallisation occurs under extreme cold, warm at 60-80 °C until fully dissolved.
2. Weighing: Accurately weigh A and B at 3:1 by weight using a precision electronic scale.
3. Mixing: Mix thoroughly until uniform and scrape the container walls and bottom.
4. Degassing: For high-clarity applications, degas under vacuum to remove entrapped air. The built-in defoaming also releases air without vacuum for general work.
5. Pouring: Pour into the clean, dry mould or device within the 20-30 minute pot life. One-time pouring up to 3-5 cm thickness is supported.
6. Curing: Cure at 25 °C for 12-16 hours, or at 80 °C for 1 hour. Do not move or stress the part during cure.

• Component A: 15 kg plastic drum; Component B: 5 kg plastic drum; custom kit sizes available
• Store sealed in a cool, dry, well-ventilated area at 5-25 °C, away from direct sunlight and moisture
• Shelf life: 12 months from the date of manufacture under recommended storage
• Transport: non-dangerous goods (general chemicals)

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 and epoxy 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 sensors, electronics, electric vehicles (EV), battery energy storage systems (BESS), solar inverters, LED lighting, and industrial automation. Headquartered in Shenzhen, Guangdong, China, we offer free samples, custom formulation and wholesale bulk supply at factory-direct pricing.

A: HN-5506A/B is a two-component 2:1 high-transparency epoxy crystal glue with Shore D 78-83 hardness, UV and anti-yellowing resistance, self-levelling and defoaming properties. It suits LED signage and resin luminous characters, label doming, crystal doming, display modules, digital tubes, photo surface coating, power modules, underwater lights, electronic encapsulation and bonding, river tabletops, crystal craft moulding, jewellery-style castings and DIY handicrafts.

A: Mix Component A and Component B at 2:1 by weight using a precision scale. Pot life is 20-30 minutes for a 150 g mix at 25 C. Initial cure is 6-8 hours and full cure is 12-16 hours at 25 C, or 1 hour at 80 C for heat-accelerated cure.

A: Cured HN-5506A/B reaches Shore D 78-83, dielectric strength 25 kV/mm, volume resistivity 4.3 x 10^15 ohm-cm, surface resistivity 2.6 x 10^14 ohm, linear expansion coefficient below 6.1 x 10^-5 cm/K, shear strength above 5 mPa on ABS/ABS, glass transition temperature above 90 C and temperature resistance from -60 to 135 C.

A: The cured material is crystal clear with UV resistance and anti-yellowing performance for long-term outdoor and lighting use. Its low viscosity, self-levelling and defoaming behaviour allow one-time pouring of 3-5 cm thickness at 25 C without vacuum equipment, and the cured surface can be sanded and polished.

A: MOQ is 1 kg. Standard packaging is Component A 15 kg plastic drum and Component B 5 kg plastic drum, with custom kit sizes available. Shelf life is 12 months when stored at 5-25 C in sealed containers. The product is RoHS compliant, classified as non-dangerous goods for transport, and OEM/private label and free samples are available. Contact us for a quotation.