Description
Premium Series: NPT-Type High-End Nylon Cable Glands
1. Product Overview
The Clifnor NPT-Type High-End Series is engineered specifically for the North American market and global projects utilizing tapered pipe thread standards. Constructed from premium Polyamide 66 (PA66) and featuring high-performance EPDM seals, these glands provide an exceptional, high-pressure barrier for electrical enclosures and control panels. With an IP68 – 10 Bar rating, they ensure a liquid-tight seal that excels in the most demanding industrial environments.
2. Technical Specifications
| Feature | Industrial Specification |
| Thread Standard | NPT (ANSI/ASME B1.20.1) |
| Ingress Protection | IP68 – 10 Bar (High-pressure water resistance) |
| Body Material | Premium PA66 (Nylon) |
| Standard Sealing | EPDM Rubber (Superior weather & ozone resistance) |
| Static Temp. Range | -40°C to 100°C (Instantaneous 120°C) |
| Dynamic Temp. Range | -20°C to 80°C (Instantaneous 100°C) |
| Flammability | UL-94 V2 (V0 available on request) |
3. Engineering & Performance Advantages
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Advanced Sealing System: Utilizing EPDM as the standard sealing material provides significantly better resistance to heat, weather, and aging compared to standard NBR.
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Audible “Click” Locking: The sealing nut is designed with a tactile and audible “click” mechanism. This ensures the installer that the gland is fully torqued and locked, while allowing the unit to be re-opened for cable maintenance without thread damage.
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Tapered Thread Integrity: The NPT thread profile ensures a secure, wedge-fit connection into threaded entries, providing superior vibration resistance in heavy machinery applications.
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Superior Strain Relief: The high-end clamping claw offers an extra-wide cable range, holding the cable firmly to prevent pull-out while protecting the jacket from localized stress.
4. Advanced Customization (“Super Rubber” Options)
To meet specialized sector requirements, we offer custom sealing compounds:
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Thermal Extremes: High-temperature resistant silicone for industrial ovens or foundry applications.
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Chemical Aggression: Specialized rubber formulations (such as FKM) to resist strong acids or strong alkalis in chemical processing plants.
5. Strategic Industry Applications
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Oil & Gas: Secure cable entry for instrumentation and control boxes in refineries.
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Heavy Machinery: Vibration-proof connectivity for motors, pumps, and industrial generators.
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Renewable Energy: UV-stabilized connections for solar tracking systems and wind power nacelles.
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Infrastructure: High-pressure wash-down areas in food processing or water treatment facilities.
6. Technical Selection Table (NPT)
| Item No. | Thread Size (NPT) | Cable Range (mm) | Thread Length (mm) | Spanner Size (mm) |
| GS-NPT1/4 | NPT 1/4″ | 3 – 6.5 | 11.5 | 15 |
| GS-NPT3/8 | NPT 3/8″ | 4 – 8 | 11.5 | 19 |
| GS-NPT1/2 | NPT 1/2″ | 6 – 12 | 13.0 | 24 |
| GS-NPT3/4 | NPT 3/4″ | 13 – 18 | 13.0 | 33 |
| GS-NPT1″ | NPT 1″ | 18 – 25 | 15.0 | 42 |
7. Ordering & Logistics
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Standard Colors: Jet Black (RAL 9005) and Light Grey (RAL 7035).
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Notes: Custom thread lengths and V0 flame-retardant ratings are available for OEM requirements.
| Code 产品编号 |
Thread 螺牙规格 |
Cable Range (mm) 适用电缆 |
Thread Diameter C1 (mm) 螺纹外径 |
Thread Length C2 (mm) 螺纹长度 |
Spanner Size A/E (mm) 扳手径 |
|---|---|---|---|---|---|
| NPT1/4-NLH | NPT1/4″ | 4 – 8 | 13.6 | 8.5 | 18/19 |
| NPT3/8-NLH | NPT3/8″ | 5 – 10 | 17 | 10 | 22/22 |
| NPT1/2-NLH | NPT1/2″ | 6 – 12 | 21.2 | 10 | 27/24 |
| NPT3/4-NLH | NPT3/4″ | 12 – 18 | 26.568 | 15 | 36/33 |
| NPT1-NLH | NPT1″ | 18 – 25 | 33.2 | 15 | 46/41 |
| NPT1-1/4-NLH | NPT1-1/4″ | 24 – 32 | 41.91 | 15 | 57/52 |