We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Gray steel conduit hole seal for 3.62 in openings

HOFFMAN

HOFFMAN AS300 Conduit Hole Seal 3.62 In Steel

SKU CH-V4TK-63996

Steel conduit hole seal covers a 3.62 inch opening to protect unused pushbutton or conduit holes

  • TypeElectrical Replacement Parts
  • Seals 3.62 in openings against debris
  • Steel construction resists corrosion and impact
  • Designed for 3 in conduit hole compatibility
  • Gray finish matches standard enclosure aesthetics
  • Packaged as single unit for direct replacement

HOFFMAN AS300 Conduit Hole Seal

The HOFFMAN AS300 is a steel conduit hole seal designed to close unused pushbutton or conduit openings in electrical enclosures. It fits a 3.62 inch diameter hole and matches a 3 inch conduit size. The gray finish provides a clean appearance in industrial settings. This component helps maintain enclosure integrity by blocking dust and moisture ingress.

Installers closing 3.62 inch knockouts

Electrical contractors and maintenance technicians use this seal when decommissioning a 3 inch conduit run or removing a pushbutton station. The steel construction withstands mechanical abuse in factories and outdoor cabinets. It is not suited for holes smaller or larger than 3.62 inches. Buyers needing a non-metallic or stainless alternative should look elsewhere.

3.62 inch hole diameter

The critical specification is the 3.62 inch hole diameter that this seal covers. The part is stamped from steel and coloured gray. It is supplied as a single piece. Matching this exact hole size ensures a proper friction fit and maintains the enclosure rating.

Highlights

  • Seals 3.62 in openings against debris
  • Steel construction resists corrosion and impact
  • Designed for 3 in conduit hole compatibility
  • Gray finish matches standard enclosure aesthetics
  • Packaged as single unit for direct replacement

Specifications

BrandHOFFMAN
TypeElectrical Replacement Parts

Questions about this item

How do I confirm the 3.62 in steel seal is seated correctly after installation?

Press the seal firmly into the 3.62 in hole until the steel flange sits flush with the enclosure surface; a uniform grey ring visible around the perimeter shows it is working as intended.

What comes in the box and what must I source separately for the AS300?

The package contains one grey steel hole seal sized for a 3.62 in opening; mounting hardware or tools are not included and must be supplied by the installer.

Which version of the Hoffman conduit hole seal matches a 3 in conduit?

Choose the AS300 model — it is built for a 3.62 in hole that corresponds to 3 in conduit size.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.