1.Material: Body and nut are made of UL Approved Nylon PA66, washer and seal are made of NBR.
2.Waterproof Rating: IP68.
3.Flammability: UL 94V-2.
4.Features: Anti-Acid, Anti-erosion, waterproof and dust-proof, not easy to get aging.
5.Working temperature: -40℃ to 100℃.
6.Color: Black, White-Grey, other colors are available as requested.
7.Certificates: CE, RoHS, SGS
Waterproof Cable Entry, Secure Strain Relief & British Parallel Thread Compatibility
G thread nylon cable glands provide waterproof cable entry and secure cable gripping for electrical enclosures, machinery and equipment with BSPP threaded connections.
Manufactured with PA66 nylon bodies and NBR sealing components, they are available in multiple G thread sizes for industrial installation, equipment maintenance and replacement applications.
G threads follow ISO 228-1 (BSPP), a British parallel pipe thread system. They are designed for compatible G-threaded equipment entries and are not interchangeable with NPT, metric or PG threads. Unlike tapered pipe threads, G threads require an appropriate sealing interface, such as a gasket or O-ring, to seal the enclosure entry.
The compression seal grips the cable jacket, helping prevent water and dust ingress while reducing cable movement at the entry point. Correct cable diameter, panel sealing and tightening are essential for achieving the specified IP protection.
Both standard and reduced-range (T) models are available. Reduced-range versions accommodate smaller cable diameters while retaining the same G thread size, allowing greater flexibility for equipment installation and maintenance.
For proper selection, confirm the G thread size, cable outside diameter, clamping range, thread length, panel sealing requirements and installation environment.
Custom colors and packaging are available according to order requirements.
Request a Quote: Provide your thread size, cable diameter, application and quantity for product selection and quotation.
| Item No. | Suitable cable range | Thread Length(C2) | Thread Dia.(C1) | Spanner Size | |||
| mm | inch | mm | inch | mm | inch | mm | |
| G1/4 | 3-6.5 | 0.12-0.25 | 8 | 0.31 | 13.1 | 0.51 | 16 |
| G1/4T | 2-5 | 0.08-0.2 | 8 | 0.31 | 13.1 | 0.51 | 16 |
| G3/8 | 4-8 | 0.16-0.31 | 10 | 0.39 | 16.7 | 0.66 | 19 |
| G3/8T | 2-6 | 0.08-0.23 | 10 | 0.39 | 16.7 | 0.66 | 19 |
| G1/2 | 6-12 | 0.23-0.47 | 10 | 0.39 | 21 | 0.83 | 24 |
| G1/2T | 5-9 | 0.2-0.35 | 10 | 0.39 | 21 | 0.83 | 24 |
| G3/4 | 12-18 | 0.47-0.71 | 12 | 0.47 | 26.5 | 1.04 | 33 |
| G3/4T | 9-16 | 0.35-0.63 | 12 | 0.47 | 26.5 | 1.04 | 33 |
| G1 | 18-25 | 0.71-0.98 | 13.5 | 0.53 | 33.2 | 1.31 | 42 |
| G1T | 13-20 | 0.51-0.79 | 13.5 | 0.53 | 33.2 | 1.31 | 42 |
| G1-1/2 | 22-32 | 0.87-1.26 | 15 | 0.59 | 41.9 | 1.65 | 52 |
| G1-1/2T | 20-26 | 0.51-1.02 | 15 | 0.59 | 41.9 | 1.65 | 52 |
| G2 | 37-44 | 0.95-1.26 | 18 | 0.71 | 41.9 | 1.65 | 64 |
| G2T | 29-35 | 1.14-1.38 | 18 | 0.71 | 41.9 | 1.65 | 64 |
| Feature | PG Cable Glands | Metric (M) Cable Glands | NPT Cable Glands | G (BSPP) Cable Glands |
|---|---|---|---|---|
| Thread System | German PG Thread | ISO Metric Thread | American Pipe Thread | British Parallel Pipe Thread |
| Thread Standard | DIN 40430 | ISO Metric / IEC 60423 | ASME B1.20.1 | ISO 228-1 |
| Thread Shape | Parallel | Parallel | Tapered | Parallel |
| Thread Angle | 80° | 60° | 60° | 55° |
| Size Designation | PG7, PG9, PG13.5, PG21 | M12×1.5, M20×1.5, M25×1.5 | 3/8″, 1/2″, 3/4″ NPT | G1/4, G1/2, G3/4, G1 |
| Main Market | Legacy European equipment | Global industrial markets | North America and selected Latin American markets | UK-origin and BSPP-threaded equipment |
| Typical Applications | Equipment repair and replacement | Electrical panels, automation and OEM equipment | Industrial enclosures and machinery | BSPP-threaded machinery, instrumentation and equipment |
| Enclosure Entry Sealing | Appropriate gasket or sealing washer | Appropriate gasket or sealing washer | Installation-specific thread sealing method | Gasket, O-ring or sealing washer |
| Cable Sealing | Compression seal | Compression seal | Compression seal | Compression seal |
| Key Advantage | Compatibility with existing PG entries | Standardized metric equipment integration | Compatibility with NPT installations | Compatibility with BSPP parallel-thread entries |
| Best Choice For | Existing PG-threaded equipment | Metric-threaded equipment | NPT-threaded equipment | G/BSPP-threaded equipment |
Important: PG, M, NPT and G threads are not directly interchangeable. Select the cable gland according to the actual enclosure thread, cable outside diameter and sealing requirements. IP protection depends on the complete gland assembly and correct installation.
A G thread cable gland uses a British Standard Pipe Parallel (BSPP) thread according to ISO 228-1. It provides cable sealing and gripping for compatible electrical equipment entries.
G threads are parallel with a 55° thread angle, while NPT threads are tapered with a 60° angle. They are not interchangeable.
No. An appropriate gasket or O-ring is required at the enclosure entry, together with a correctly installed cable compression seal.
Both use the same G1/2 mounting thread. The standard version fits 6–12 mm cables, while the T version fits 5–9 mm cables.
Not directly. The thread dimensions and profiles are different. Use a compatible thread adapter when required.
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