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Rittal
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Rittal 8018244 Oiltight Hole Seal, Carbon Steel
The Rittal 8018244 Oiltight Hole Seal is built to close off unused or empty pushbutton holes, conduit openings, and knockout openings on enclosures and panels. Constructed from carbon steel with a powder-coated RAL 7035 finish, this 56 mm diameter hole seal includes an oil-resistant gasket that helps keep the opening sealed against oils and other fluids commonly found in industrial and machine-building environments. It ships as a single piece (packaging unit: 1 pc(s).) for straightforward field installation anywhere a pushbutton, conduit, or knockout opening needs to be closed off, helping maintain the integrity of the enclosure it is installed on.
Key Features
- Diameter: 56 mm sizing for sealing standard pushbutton, conduit, and knockout openings.
- Durable Construction: Carbon steel body provides long-term structural integrity in enclosure applications.
- Finish: Powder-coated in RAL 7035, matching the standard grey finish used across many Rittal enclosure systems.
- Oiltight Sealing: Supplied oil-resistant gasket maintains an oiltight seal against oils and fluids.
- Purpose-Built Function: Used to seal unused or empty pushbutton holes, conduit openings, and knockout openings.
- Retrofit Friendly: Simple, single-piece design allows an unused opening to be closed off quickly during a panel modification or retrofit.
- Compact Packaging: Supplied 1 pc(s). per packaging unit, weighing 0.114 kg per unit, for easy handling and stocking.
Technical Specifications
- Diameter: 56 mm
- Material: Carbon Steel
- Surface Finish: Powder-coated
- Color: RAL 7035
- Packaging Unit: 1 pc(s).
- Weight per Packaging Unit: 0.114 kg
Typical Applications
- Sealing Unused Pushbutton Holes
- Sealing Empty Conduit Openings
- Sealing Unused Knockout Openings
- Enclosure and Panel Modifications
- Industrial Control Panel Retrofits
- Electrical Enclosure Maintenance
Why Rittal?
Rittal builds this hole seal from carbon steel with a powder-coated RAL 7035 finish and an oil-resistant gasket, giving panel builders and electricians a dependable way to close unused openings without compromising enclosure protection. The single-piece design and compact 0.114 kg packaging make it easy to keep spares on hand for ongoing enclosure maintenance, modifications, and field installations, whether on a new panel build or an existing installation being reconfigured.
Manufacturer Resources
Rittal Product Catalog
Product Specs
- Product Type:
- Gland Plate & Entry Seal
- Product Finish:
- Powder-Coated
- Product Material:
- Carbon Steel
- Product Color:
- RAL 7035
- Department:
- Electrical
- Product Group:
- Boxes & Enclosures
- Product Subgroup:
- Enclosure Accessories
Rittal 8018244 – Frequently Asked Questions
1) What size opening does the Rittal 8018244 hole seal close off?
The 8018244 is a 56 mm diameter hole seal, sized for standard pushbutton holes, conduit openings, and knockouts in enclosures and panels. Measure the bare hole in the panel, not the old device body, before ordering.
2) Will a hole seal keep an enclosure sealed against cutting oil and coolant?
Yes. The Rittal 8018244 ships with an oil-resistant gasket that maintains an oiltight seal against oils and fluids, which is why it gets used in machine-building and industrial panel work rather than a plain blanking disc.
3) Is there an alternative to the Rittal 8018244 hole seal from another manufacturer?
The Hoffman AS250 Hol-Sealer is a comparable enclosure hole seal built from painted galvanized steel. The Rittal 8018244 is a carbon steel oiltight hole seal with a powder-coated RAL 7035 finish and a 56 mm diameter, supplied with an oil-resistant gasket. If the panel is an existing Rittal enclosure in RAL 7035, the 8018244 finish matches the surrounding grey; if finish match is not a concern and you are closing an opening on a Hoffman enclosure, the AS250 Hol-Sealer is the in-family part.
4) Will the finish on this Rittal hole seal match my existing grey enclosure?
It is carbon steel, powder-coated in RAL 7035, the standard grey used across many Rittal enclosure systems. On a Rittal panel it blends in; on another manufacturer's enclosure, compare your RAL number first.
5) Can I install a hole seal on an existing live panel without pulling it apart?
It is a single-piece seal with its own gasket, so an unused opening can be closed from the panel face during a modification or retrofit without disassembling the enclosure. Standard safe-work practice on an energized panel still applies.
6) Is a steel hole seal the right choice, or should I use a plastic plug?
For an industrial control panel exposed to oils, a steel seal with an oil-resistant gasket like the 8018244 holds up better than a snap-in plastic plug and keeps the panel's structural face consistent. Plastic plugs are a dry-location convenience part; this one is intended for oiltight service on enclosures and panels.
7) What is the difference in material between the Rittal 8018244 and the Hoffman AS250 Hol-Sealer?
The Rittal 8018244 body is carbon steel with a powder-coated finish in RAL 7035. The Hoffman AS250 Hol-Sealer is painted galvanized steel. Both are steel seals for closing unused pushbutton, conduit, or knockout openings; the difference is the base metal and coating system, which matters mainly where you want the plug to blend with an existing grey enclosure or where a specification calls out a galvanized substrate.
8) I need to seal a conduit opening that is not 56 mm - will the Rittal 8018244 work?
No. The Rittal 8018244 is sized at 56 mm diameter and is intended for openings of that size, typically standard pushbutton and knockout holes. For an opening of a different diameter, look to another seal size rather than forcing this one; the Hoffman AS250 Hol-Sealer is the other enclosure hole seal in the same role if you are working outside the 56 mm Rittal part.
9) Is a gland plate the same thing as the Rittal 8018244 hole seal?
No. A gland plate is a removable panel in the enclosure wall that cable glands or conduit fittings mount through, so cables can enter. The Rittal 8018244 does the opposite job: it is a single-piece seal that closes an unused or empty pushbutton, conduit, or knockout opening, using an oil-resistant gasket to keep oils and fluids out. If you need cable entry, a gland plate is the part; if you need an opening permanently closed off, the 8018244 or the Hoffman AS250 Hol-Sealer is what you want.
10) Do I get more than one in a pack, or is it sold individually?
The 8018244 is supplied one piece per packaging unit, at 0.114 kg per unit. If you are closing several abandoned pushbutton holes on a retrofit, order a quantity to match the hole count.
How fast can I get the Rittal 8018244 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 Rittal 8018244 come with a warranty?
Absolutely. The Rittal 8018244 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 Rittal 8018244?
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