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Silver aluminum conduit sealing fitting with male and female threaded ends

Appleton Century Crofts

Appleton Century Crofts 3-1/2" Sealing Fitting 25% Fill 1/2" FNPT x 1/2" MNPT Aluminum Conduit

SKU CH-0JVG-58YED

Aluminum sealing fitting prevents gas and flame passage in hazardous conduit systems

  • Product typeConduit Fittings
  • Color and finishSilver
  • Main materialAluminum
  • Overall length5.3
  • Aluminium construction resists corrosion in harsh environments
  • 25% fill ratio allows safe conductor capacity
  • 300 inch length fits standard conduit runs
  • Hazardous-location rating for Class I, II, III divisions
  • Male-to-female NPT threads enable direct conduit connection

3-1/2" Aluminum Sealing Fitting

This Appleton Century Crofts conduit fitting provides a secure seal in hazardous locations. It is built for electricians and maintenance crews working with Class I, II and III Division 1 and 2 environments. The aluminum body resists corrosion while preventing the passage of gases, vapors or flames between conduit sections. It accepts 1/2 inch IMC or RMC conduit.

25% Fill Rating and Thermal Performance

The 25% fill capacity ensures adequate space for conductor heat dissipation during normal operation. Aluminum construction naturally conducts heat away from the internal sealing compound. The vertical and horizontal mounting orientation does not restrict airflow around the fitting. No moving parts or electrical components are present to generate noise or draw power.

Replaces Deteriorated Hazardous-Location Seals

This fitting replaces worn or non-compliant seals in existing 1/2 inch conduit runs where explosion-proof integrity is required. The upgrade is worth it when inspections reveal cracked compounds, corrosion or missing listings for Groups A through G. It is not suited for installations needing larger trade sizes or non-hazardous general-purpose conduit connections.

How it compares

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

Price $18.99
Cheaper than about 60% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameAPPLETON ELECTRIC
Product typeConduit Fittings
Color and finishSilver
Size & build
Main materialAluminum

Questions about this item

How do you install the 1/2 in FNPT x 1/2 in MNPT sealing fitting and what step is often missed?

Thread the male end into the conduit run and the female end onto the adjoining piece, then torque both joints to spec; the step often missed is applying the listed sealing compound before assembly so gases and vapors cannot pass between sections.

What maintenance or replacement will the aluminum 25% fill fitting need later?

Inspect the threads and sealing compound at each scheduled shutdown; replace the fitting if corrosion appears on the aluminum body or if the compound has cracked, because the hazardous-location rating depends on an intact seal.

What limit appears first on the 3-1/2 in sealing fitting under sustained use?

The 25% fill ratio is the first constraint — exceeding it reduces the space for sealing compound and can let flames or vapors migrate through the conduit system.

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