Stock 42

Sealing Locknut · 3/4 in steel · PVC seal yellow coating · LK.75S

SKU: MC-LK.75S

3/4 in steel sealing locknut for threaded rigid or IMC conduit entries where a raintight seal is needed at the box or enclosure wall. Web results support the product type, size, steel body, and PVC sealing element, but the exact manufacturer for LK.75S could not be verified, so brand is left as Unknown.

What this product is for

This sealing locknut is used to secure 3/4 in threaded rigid metal conduit or IMC to an unthreaded box, cabinet, or enclosure opening while adding a PVC sealing surface to help resist moisture and dust entry.

Use for

3/4 in threaded rigid conduit or IMC terminations
Outdoor or washdown-adjacent enclosure entries where a raintight seal is required
Industrial and commercial conduit runs using sealing locknuts at enclosure walls

Avoid for

Applications where the exact manufacturer listing or certification must match a specified brand and part number
Non-threaded conduit systems unless the fitting assembly is specifically designed for that use
Situations where a hub or other listed entry fitting is required by drawing, spec, or local code

Best for

Electricians and maintenance teams replacing a 3/4 in sealing locknut on rigid or IMC conduit where a steel locknut with PVC sealing face is the required form factor.

Installed in

Typically installed on 3/4 in conduit entries in panels, junction boxes, pull boxes, control cabinets, and outdoor enclosures. 3/4 in trade size is approximately 0.75 in (19 mm).

Why this product exists

A sealing locknut helps clamp the conduit fitting to the enclosure and adds a sealing element at the wall of the box. This is commonly used where standard locknuts alone may not provide the same resistance to water or contaminant ingress.

Compared with similar products

Compared with a standard steel locknut, a sealing locknut adds a PVC seal for raintight or moisture-resistant entry points. Compared with a hub-style entry, it is typically a simpler locknut-based solution for threaded conduit terminations. Actual sealing performance depends on enclosure condition, fitting compatibility, installation torque, and local electrical code.

Specifications

Product type: Sealing locknut
Trade size: 3/4 in (19 mm nominal)
Material: Steel body
Seal material: PVC sealing element
Colour: Yellow sealing element or coating indicated by market references
Typical use: Threaded rigid conduit or IMC to box or enclosure
Installation note: Commonly used where a raintight seal is needed at the enclosure wall; verify listing and compatibility before substitution

- SKU
  MC-LK.75S
- Manufacturer Part #
  LK.75S
Application
Threaded rigid conduit or IMC to box or enclosure
Colour
Yellow sealing element or coating indicated by market references
Material
Steel body
Trade Size
3/4 in (19 mm nominal)
Installation Note
Commonly used where a raintight seal is needed at the enclosure wall; verif
Seal Material
PVC sealing element
Brands
White Label
Stock in Elmira
22
Stock in Flesherton
20

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