Overview
The Hoffman AS200 is a gasketed steel hole seal engineered to seal 2″ conduit openings, knockout holes, and unused pushbutton entries in electrical enclosures. This proven Hol-Sealers design protects equipment from dust, dirt, oil, water, and environmental contamination. Sized for 2.00″ conduit with a 3.00″ outer diameter, the AS200 delivers reliable moisture and debris protection for NEMA-rated control cabinets and industrial panels.
Key Features
- Seals extra pushbutton holes, conduit openings and knockout openings against dust, dirt, oil and water
- Compatible with enclosure walls up to 0.31 inches (8 mm) thick
- Maintains enclosure Type rating 3R, 4, 12, and 13 when installed in nVent HOFFMAN enclosures
- Gray steel construction with gasketed design for oil-tight sealing
- Accommodates hole sizes from 0.19″ diameter and up
- UL 508A Component Recognized certification
Technical Specifications
- Material: Steel, gray finish
- Conduit Size: 2.00″
- Seal Diameter: 3.00″
- Wall Thickness Range: Up to 0.31″ (8 mm)
- Hole Coverage: 0.19″ to maximum diameter per NEMA spec
- NEMA/EEMAC Type Rating: 3R, 4, 12, 13
- Certification: UL 508A Component Recognized; CSA File No. 42186; IEC 60529 IP66
- Manufacturer: nVent Hoffman (formerly Hoffman Engineering)
- Part Number: AS200
Typical Applications
The Hoffman AS200 is ideal for:
- Sealing unused 2″ knockout openings in industrial control cabinets
- Protecting equipment connections in outdoor and corrosive environments
- Maintaining NEMA enclosure ratings during system modifications
- Preventing ingress of coolant, moisture, and airborne contaminants in manufacturing facilities
- Temporary or permanent sealing of conduit entries in wet or dusty locations
Compatibility & Replacements
Compatible With
- nVent HOFFMAN enclosures and control cabinets
- Standard electrical conduit systems (2″ schedule)
- NEMA Type 3R, 4, 12, 13 rated enclosures
- Industrial control panels and terminal boxes
Replaces / Drop-In Replacement For
- Previous generations of Hoffman Hol-Sealers 2″ hole seal models
- Generic 2″ knockout covers where NEMA compliance is not mandated
Works With
- IP66 / IEC 60529 rated enclosure systems
- UL 508A compliant panel assemblies
- Standard conduit fittings and adapters
