Appleton EXGJH and EXLK Explos...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$352.17
Appleton EXGJH and EXLK Explosionproof Flexible Couplings

Appleton EXGJH and EXLK Explosionproof Flexible Couplings

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Model: EXGJH-18

In Stock (leaves warehouse same day if ordered before 3pm ET)

$352.17
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Appleton EXGJH and EXLK Explosionproof Flexible Couplings

Appleton EXGJH and EXLK flexible couplings are explosionproof and dust-ignitionproof fittings built for areas where vibration and/or movement would damage a rigid run of conduit. They can be used in place of rigid conduit in difficult-bend situations, with 1/2 thru 2 sizes constructed of an outer bronze braid over a brass core and 2-1/2 thru 4 sizes built from an outer stainless steel braid over a stainless steel core, both with an interior insulating liner and end fittings to match. The line is explosionproof, dust-ignitionproof, and watertight, with 1-1/4 thru 4 sizes rated for Class I, Group D; Class II, Groups E, F, G; and Class III locations, and stainless steel 1/2 thru 2 sizes additionally ATEX rated.

Key Features

  • Heavy-Duty Design: Resists mechanical abuse in demanding industrial environments.
  • Interior Insulating Liner: Protects conductors from abrasion under vibrating conditions.
  • Tapered Threads: Accurately tapped, tapered threads deliver tight, rigid joints and reliable ground continuity.
  • Integral Bushing: Smooth, rounded integral bushing in each hub protects conductor insulation.
  • Explosionproof, Dust-Ignitionproof, Watertight: Rated for hazardous-location service.
  • Conductivity: Electrical conductivity equal to rigid conduit on a similar length basis, so no bonding jumper is required.
  • EXGJH Configuration: Both end fittings are female, each furnished with a removable male nipple.
  • EXLK Configuration: Female end fitting with union at one end and a female end fitting with a removable male nipple at the other end.

Certifications & Compliance

  • NEC/CEC: 1-1/4 thru 4 sizes rated Class I, Group D; Class II, Groups E, F, G; Class III
  • ATEX: Stainless steel 1/2 thru 2 sizes rated Ex II2 GD; Ex d IIC Gb; Ex t IIIC Db; IP66

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Motor, Pump, and Vibrating Equipment Connections
  • Hazardous and Classified Location Wiring
  • Difficult-Bend Conduit Runs Requiring Flexibility
  • Industrial and Petrochemical Facilities
  • Explosionproof and Dust-Ignitionproof Raceway Systems

Why Appleton?

Appleton EXGJH and EXLK couplings pair a rugged bronze/brass or stainless steel construction with an insulating liner and tapered threads to deliver reliable, code-compliant performance in the toughest hazardous-location and vibration-prone installations. With explosionproof, dust-ignitionproof, and watertight ratings backed by NEC/CEC and ATEX compliance, they give electrical professionals a dependable alternative to rigid conduit wherever movement or misalignment is a concern.

EXGJH vs. EXLK — what the model number means: Both are explosionproof, dust-ignitionproof flexible couplings built from an outer bronze braid over a brass core. They differ in end-fitting configuration, per Appleton/Emerson's own catalog: EXGJH models have matching female connections on both ends, each furnished with a removable male nipple — symmetrical, either end can go either direction. EXLK models have a union fitting on one end and a female connection with a removable male nipple on the other — asymmetrical, one end unions directly to a fixed fitting. Select EXGJH for a symmetrical run between two open connections; select EXLK when one end needs to union onto an existing fixed fitting. The number after the letters is the trade size (e.g. 1/2 through 4).

Manufacturer Resources

Product Specs

Product Type:
Flexible Coupling
Product Finish:
Natural
Product Size:
1/2" - 4"
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Flexible Conduit & Fittings

Appleton EXGJH-18 – Frequently Asked Questions

1) What is the difference between Appleton EXGJH and EXLK flexible couplings?
End-fitting configuration is the only difference. EXGJH is symmetrical: both ends are female connections, each furnished with a removable male nipple, so either end can face either direction. EXLK is asymmetrical: one end is a female fitting with a union, the other a female fitting with a removable male nipple. Pick EXGJH for a run between two open connections, and EXLK when one end has to union onto an existing fixed fitting without turning the whole assembly.
2) What materials are Appleton EXGJH couplings made from, and does it change by size?
Yes, construction splits by trade size. The 1/2 through 2 inch sizes use an outer bronze braid over a brass core. The 2-1/2 through 4 inch sizes use an outer stainless steel braid over a stainless steel core. Both carry an interior insulating liner and end fittings matched to the body material. Catalog numbers with an -SS suffix, such as EXGJH-16-SS or EXGJH-312-SS, are the stainless versions, which is what you want for corrosive or washdown service.
3) Do I need to run a bonding jumper across an Appleton EX flexible coupling?
No separate bonding jumper is required. Electrical conductivity of the coupling is equal to rigid conduit on a similar length basis, and the accurately tapped tapered threads make a tight, rigid joint that carries ground continuity through the fitting. That is a real labor and inspection saving over flex that has to be jumpered.
4) Can I use a flexible coupling instead of bending rigid conduit around an obstruction?
That is one of the intended uses. The EXGJH and EXLK couplings can replace rigid conduit in difficult-bend situations where a bend is impractical, and they are the right choice anywhere vibration or equipment movement would fatigue a rigid run, such as motor, pump, and vibrating equipment terminations. They are watertight as well as explosionproof and dust-ignitionproof, so outdoor and washdown terminations are covered.
5) Will the flexing damage conductor insulation inside the coupling?
The coupling is built against that. An interior insulating liner runs the length of the fitting to protect conductors from abrasion under vibrating conditions, and each hub has a smooth, rounded integral bushing so the conductors are not dragged across a thread edge at the entry. No separate bushing needs to be added at install.
6) Does the EXGJH coupling come with the male nipples, or are those ordered separately?
They are furnished with the coupling. On EXGJH, each of the two female end fittings comes with a removable male nipple, so you can land the coupling female to a male hub or install the nipple and thread into a female hub. On EXLK, the nipple comes on the single female end, the other end being a union fitting.
7) What finish do Appleton EX flexible couplings have?
Natural finish, meaning the metal is left as is rather than painted or plated, so the bronze braid over brass on the smaller sizes and the stainless braid on the larger ones is what you see in the field. There is no coating to chip off in a vibrating industrial location.
How fast can I get the Appleton EXGJH-18 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Appleton EXGJH-18 come with a warranty?
Absolutely. The Appleton EXGJH-18 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Appleton EXGJH-18?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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