The 1427NCGPG21B is a PG21 liquid-tight cordgrip in black (RAL 9005) nylon, intended for sealing mid-size cable at the point where it enters or leaves an enclosure. With a clamping range of 13 mm (0.51 in) to 18 mm (0.71 in), it suits power and control cable runs into industrial and electronic housings.
The gland pairs a nylon body with an NBR (nitrile rubber) seal and a large opening that accepts a wide range of diameters. Strain relief elements tighten in a circular sequence on the sealing ring, holding the cable without twisting or damaging it. A nylon locknut and EPDM o-ring are included.
Mount it in a 29 mm (1.14 in) hole. The part measures 31 mm (1.22 in) in outer length (L) with an 11 mm (0.43 in) inner thread length (T). Hammond's torque guide for PG21 lists 5-6 N-m on the sealing nut and 4-7 N-m on the locknut; treat these as guidance, since actual values can vary with the application.
The 1427NCG series provides IP68 protection and is designed to meet NEMA Type 4, 4X, 6, 6P, 12 and 13. It is UL listed, rated UL94 V-2 for flammability, and RoHS and REACH compliant. Static operating temperature is -40°C to 100°C (up to 120° instantaneous); dynamic is -20°C to 80°C (up to 100° instantaneous).
| Series | 1427NCG Liquid-Tight Cordgrips (Nylon) |
| Thread Type | PG thread, standard length |
| Product Type | Cord Grip (Cable Gland) |
| Long Description | cordgrip - black nylon. |
| Short Description | CABLE GLAND |
| Thread Size (D) | PG21 |
| Outer Length (L) | 1.22 in (31 mm) |
| Wire Diameter (Max) | 0.71 in (18 mm) |
| Wire Diameter (Min) | 0.51 in (13 mm) |
| Mounting Hole Diameter | 1.14 in (29 mm) |
| Inner Thread Length (T) | 0.43 in (11 mm) |
| UPC | 623980541877 |
| UNSPSC | 39121431 |
| Part Number | 1427NCGPG21B |
| Gray Equivalent Part Number | 1427NCGPG21G |
| Torque Note | Torque values are a guide; actual values can vary depending on the application |
| Included Items | Nylon locknut and EPDM o-ring |
| Selection Guidance | Use the cordgrip with the smallest maximum diameter that will fit the application |
| Locknut Torque (Max) | 7 N-m |
| Locknut Torque (Min) | 4 N-m |
| Sealing Nut Torque (Max) | 6 N-m |
| Sealing Nut Torque (Min) | 5 N-m |
| Packaging Type | Bag |
| Shipping Weight | 0.05 lbs (0.02 kg) |
| Color | Black (RAL 9005) |
| Material | Nylon |
| Seal Material | NBR (nitrile rubber) |
| Strain Relief | Strain relief elements tighten in a circular sequence on the sealing ring without twisting or damaging the cable |
| O-Ring Material | EPDM |
| IP Rating | IP68 |
| NEMA Rating | Designed to meet NEMA Type 4, 4X, 6, 6P, 12 & 13 |
| Flame Rating | UL94 V-2 |
| Operating Temperature (Static) | -40°C to 100°C (up to 120° instantaneous) |
| Operating Temperature (Dynamic) | -20°C to 80°C (up to 100° instantaneous) |
| UL | UL listed |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Cable from 13 mm (0.51 in) up to 18 mm (0.71 in) in diameter.
The PG21 size requires a 29 mm (1.14 in) mounting hole.
The series torque guide for PG21 lists 5-6 N-m for the sealing nut and 4-7 N-m for the locknut. Hammond notes these are a guide and actual values can vary depending on the application.
The series provides IP68 protection and is designed to meet NEMA Type 4, 4X, 6, 6P, 12 and 13.
The inner thread length (T) is 11 mm (0.43 in); outer length (L) is 31 mm (1.22 in).
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