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Press Release
April 2026 – Avon OH
Polycase Expands Accessory Lineup with New Black NEMA Cable Glands and Venting Accessories
Polycase, a leading U.S. supplier of electronic enclosures and enclosure accessories, announced the availability of new black versions of its popular CG3 metric cable glands, threaded hole plugs, and threaded vent plugs. The addition of black accessories delivers the same reliable performance customers expect while pairing seamlessly with black NEMA enclosures, including the newest HN Series enclosures. These accessories are designed to help protect sensitive electronics by sealing cable entry points and supporting pressure equalization to reduce moisture-related issues, key considerations when maintaining an enclosure’s environmental protection.
Black CG3 Metric Cable Glands (Cord Grips / Strain Reliefs)
Polycase’s CG3 cable glands are designed for waterproof cable entry and strain relief, helping to keep enclosures sealed where wiring enters or exits.
Key features include:
- Designed to meet IP68 and NEMA 4, 4X, 6, and 6P requirements for waterproof applications
- Metric mounting thread sizes available in M12, M16, M20, M25, M32, and M40
- Supports cable diameters from 0.115” to 1.26”
- Nylon 6/6 body and lock nut with a ratchet sealing nut assembly for enhanced anti-vibration protection
Black Threaded Hole Plugs (Conceal Open Mounting Points)
Threaded hole plugs provide a clean way to seal unused knockout holes while supporting environmental ratings.
Key features include:
- Available in M12, M16, M20, and M32 hole sizes
- Includes an integral sealing ring (no extra O-ring required)
- Designed to meet NEMA 3R, 4, and 4X requirements
Black Threaded Vent Plug (Pressure Equalization / Moisture Management)
Vent plugs help equalize pressure caused by temperature cycling while maintaining a liquid-tight seal and blocking moisture and contaminants.
Key features include:
- M20 threaded vent plug for pressure equalization in electronic enclosures
- Pressure compensating seal with an integral sealing ring for a liquid-tight seal
- Ultrasonically welded filter membrane helps prevent moisture and contamination
- Designed for IP67 and IP68 plus NEMA 3R, 4, and 4X applications
- Maximum airflow of 16.6 LPM / 3.7 cm² at 13.5 psi
The expanded lineup reinforces Polycase’s focus on being a one-stop shop for enclosure solutions, helping customers save time and money by simplifying sourcing.