20mm vs. M20: A Guide to Brass Cable Gland Sizing
The key difference is simple: 20mm refers to the cable outer diameter that fits through the gland, while M20 refers to the metric thread size (20mm diameter) that screws into your equipment.
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The key difference is simple: 20mm refers to the cable outer diameter that fits through the gland, while M20 refers to the metric thread size (20mm diameter) that screws into your equipment.
Introduction I’ve seen it happen too many times: a procurement manager orders nylon cable glands for a chemical processing plant, only to find them cracked and brittle within months. The cost of replacement? Thousands of dollars. The safety risk? Even higher. Nylon (polyamide) cable glands offer excellent value and versatility,
Here is the direct answer: For non-armored cables in standard industrial environments, switching from brass to high-grade PA66 nylon cable glands can reduce your component costs by 40-60% and shipping weight by over 80%, while maintaining the exact same IP68 ingress protection rating.
Spiral strain relief glands are essential for robotics because they provide critical bend protection, preventing cables from exceeding their minimum bending radius during dynamic movement, thereby extending cable life and ensuring system reliability.
Properly selected nylon cable glands can extend LED fixture lifespan by 3-5 years by preventing moisture ingress that causes driver failure, corrosion, and electrical shorts.
Displacement seal in cable glands refers to a sealing mechanism that maintains consistent compression and contact pressure on the cable sheath regardless of minor cable movement, thermal expansion, or installation tolerances.
UV exposure causes plastic cable glands to undergo photodegradation, leading to brittleness, discoloration, cracking, and compromised sealing performance.
Selecting cable glands for mining and tunneling applications requires prioritizing explosion-proof certifications (ATEX/IECEx), armored cable compatibility, IP68 sealing against water and dust ingress, mechanical durability for vibration resistance, and corrosion-resistant materials like brass or stainless steel.
PG16 metal cable glands are designed for cables with outer diameters ranging from 10-14mm, featuring M16×1.5 threading and providing IP68 waterproof protection.