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PVC/Nylon Cable Glands

Cable glands are sealing connectors that clamp onto cables to secure and protect the cable entry into equipment. PVC and nylon are common materials: PVC glands are cost-effective and often color-coded, while Nylon (typically polyamide 6) glands are more robust and UL-rated. High-quality glands provide a strain-relieved, watertight seal (commonly IP68) around the cable, preventing dust, oil, and water ingress. The gland’s rubber grommet grips the cable, and the threaded body attaches to the enclosure.

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Key Features

Material Options: PVC (plastic) or Nylon (PA66). Nylon glands are inherently more durable and usually UL94 V2/V0 flame rated, while PVC glands can be UL94 V0 (as noted for high-end PVC).
IP68 Seal Rating: Effective sealing against dust and submersion (per manufacturer ratings).
Multiple Thread Types: Metric, PG, NPT or BSP threads available to match equipment ports.
Wide Cable Range: Adjustable grommet size to grip different cable diameters securely (often ±10–20% range).
Color Coding (PVC): PVC glands often come in red, gray, yellow etc., allowing easy cable identification.

Benefits

Environmental Protection: Maintain enclosure’s waterproof rating by sealing cable entries; keeps electronics clean.
Strain Relief: Prevents cable tugging forces from transmitting to internal terminals, enhancing reliability.
Electrical Insulation: Non-metallic glands eliminate grounding issues and prevent corrosion (no metal interface).
Easy Assembly: Simple nut tightening gives an automatic seal (“click” sound on proper locking).

Applications

Industrial Controls: Used on junction boxes, panelboards, and sensor housings in machinery.
Outdoor Equipment: Solar panel or lighting fixture cable entries that require IP68 protection.
Data Centers: Sealing power and fiber cables entering wall-mounted enclosures.
Marine and Automotive: Plastic glands in boats or vehicles where salt spray would corrode metal glands.

Technical Specifications

Sealing Material: Usually EPDM or NBR rubber inner grommet.
Flammability: Nylon glands typically UL94 V2 or better; PVC glands often V0.
Temperature Range: Nylon: –20°C to +100°C; PVC: –10°C to +60°C (approx).
Certifications: Many are UL, CE, RoHS certified; IP and NEMA ratings as specified by maker.

Unique Selling Points (USPs)

High-Grade Standards: For example, some PVC glands are made of PA66 and UL94 V0 for maximum safety.
Corrosion Resistance: Unlike brass glands, plastic glands won’t corrode in harsh chemicals or humidity.
Wide Variety: Available from miniature sizes for telecommunications to large armored cable glands for machinery.