IP68 Waterproof Junction Box | Submersible Cable Potting Seal
IP68 Waterproof Junction Box | Submersible Cable Potting Seal
IP68 Waterproof Cable Potting Junction Box – Built for Outdoor & Underground Use
Keep your outdoor cable connections completely protected with this heavy-duty waterproof junction box. Engineered with advanced potting compound filling technology, it creates an airtight, fully sealed enclosure around cable connection points — ideal for buried, submerged, and exposed outdoor installations such as garden lighting, LED light strips, landscape wiring, and underground electrical runs.
Made in Mainland China.
Key Features
- IP68 Waterproof Rating: Potting compound completely seals all cable entry points, delivering maximum protection against water ingress, moisture, and humidity — even when buried or submerged.
- Excellent Insulation Performance: High-grade potting compound and PP housing deliver outstanding insulation resistance, minimizing leakage risk and keeping your wiring and equipment safe.
- Corrosion & Chemical Resistant: The junction box shell is made from high-quality modified PP plastic with strong resistance to acids and alkalis, significantly extending its service life in harsh outdoor environments.
- Quick & Easy Installation: Simply pull off the partition strip of the included aluminum foil bag to mix the potting compound — no mess, no splashing, no overflow. Fast and clean installation every time.
- High Compressive Strength: The robust PP shell resists crushing and impact, protecting internal connections even under soil pressure, foot traffic, or accidental force.
- Transparent Design: Clear housing lets you visually verify the fill level and connection quality without disassembly.
- 1kV Rated: Suitable for low-voltage cable connections up to 1kV for added versatility.
Specifications
| Material | Modified PP Plastic |
| Color | Transparent |
| Dimensions | 180×40×45 mm (7.09×1.57×1.77 in) & 270×55×55 mm (10.63×2.17×2.17 in) |
| Weight | 175g (small) / 365g (large) |
| Waterproof Rating | IP68 |
| Voltage Rating | 1kV |
| Package Includes | 1 × Cable Potting Waterproof Junction Box Set |
| Origin | Mainland China |
Ideal Use Cases
- Underground cable splices and buried wiring runs
- Outdoor LED strip light and garden lighting connections
- Pond, fountain, and landscape irrigation wiring
- Exterior wall and pathway lighting installations
- Any cable junction requiring long-term weatherproofing
For further information on electrical safety standards and best practices for outdoor wiring, visit the U.S. Consumer Product Safety Commission – Electrical Safety.
Frequently Asked Questions
Q: What is the waterproof rating of this junction box, and can it be fully buried underground?
A: This waterproof junction box carries an IP68 rating, meaning it is fully protected against continuous water immersion. It is specifically designed for buried and submersible outdoor applications, making it safe for underground cable splices and garden wiring installations.
Q: How does the potting compound work, and is installation difficult?
A: The included potting compound comes pre-measured in an aluminum foil bag separated by a partition strip. Simply pull off the strip to allow the two compounds to mix, then pour the mixture into the junction box over your cable connections. There is no splashing or overflow — the compound cures to form a permanent, waterproof, insulating seal around all connection points. Installation is straightforward and requires no special tools.
Q: What size options are available, and which should I choose?
A: This junction box is available in two sizes: a smaller 180×40×45 mm (approx. 7.1×1.6×1.8 in) option suited for compact cable runs and LED strip connections, and a larger 270×55×55 mm (approx. 10.6×2.2×2.2 in) option for thicker cables or multiple wire splices. Choose based on the diameter and quantity of cables you need to seal.
Q: Is this junction box suitable for LED light strip connections outdoors?
A: Yes — this box is specifically referenced for outdoor LED light strip protection. Its IP68 seal, corrosion-resistant PP shell, and 1kV-rated insulation make it an excellent choice for protecting LED strip junctions, garden light wiring, and similar low-voltage outdoor lighting cable connections.