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
Carbon steel knockout seal KO125, silver-grey finish

L.H. DOTTIE

L.H. DOTTIE KO125 Knockout Seal Carbon Steel NOVAL conduit

SKU CH-YJQ0-3MP87

Carbon steel knockout seal closes unused 125 openings in electrical boxes

  • Product typeElectrical Boxes & Covers
  • Carbon steel construction resists impact and corrosion
  • 125 size fits standard knockout openings
  • Seals unused holes to maintain enclosure rating
  • DOTTIE brand trusted by electrical professionals
  • New condition ensures reliable performance out of the box

Knockout Seal 125

The L.H. DOTTIE KO125 knockout seal is a carbon steel component designed to close unused openings in electrical boxes or enclosures. It suits electricians and maintenance technicians who need a secure, code-compliant way to blank off a 125 trade-size knockout during installation or retrofit work.

Carbon steel construction

The seal mounts directly into the knockout hole without additional hardware, relying on a friction or tabbed fit that locks it in place. It requires a compatible electrical box with a matching 125 knockout diameter and frees the installer from improvising covers or leaving live enclosures exposed.

Trade size 125 capacity

The seal handles a single 125 knockout aperture, providing a durable barrier against dust, moisture and accidental contact. It does not accommodate larger or smaller knockout sizes, nor does it serve as a cable entry gland or a structural support for heavy conduit runs.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $62.99
Pricier than about 73% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameDOTTIE
Product typeElectrical Boxes & Covers

Questions about this item

What size knockout does the 125 seal cover?

The KO125 knockout seal is sized for a 125 trade-size opening in electrical boxes and covers.

Does the carbon-steel construction heat up during continuous electrical load?

Carbon steel dissipates heat well; the seal itself carries no current so temperature rise is minimal under normal operation.

Which electrical box or cover must I already have for this seal to fit?

You need a box or cover with a standard 125 trade-size knockout opening for the seal to install correctly.

More in Electrical Conduit & Fittings

Similar items