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Black rubber ring with smooth round profile

Dayton

Dayton 991219 rubber ring electrical box

SKU CH-4QXE-MNK33

Rubber ring with 1-1/2 in inside diameter and 1-3/4 in outside diameter fits tubeaxial fan enclosures

  • TypeEnclosures
  • Rubber construction resists vibration and weathering for durable outdoor use
  • Fits 1-1/2 in. inside diameter openings on compatible tubeaxial fans
  • 1-3/4 in. outside diameter matches Grainger 4C659 curb specifications
  • Designed for HA, PL, PNURF, PV, QBR and XB fan models
  • Dayton 991219 model ensures correct replacement part identification

Dayton 991219 Rubber Ring for Tubeaxial Fans

This Dayton 991219 rubber ring fits tubeaxial fans with a 1 1/2 in inside diameter and 1 3/4 in outside diameter. It is designed for technicians installing or maintaining compatible ventilation equipment.

Compatible with Grainger 4C659 Curb Assemblies

The ring matches Grainger part number 4C659 and works with HA, PL, PNURF, PV, QBR and XB series units. Selecting this part ensures the correct seal for those specific curb-mounted fan models.

Verify Fan Model and Mounting Dimensions

Confirm your fan uses a tubeaxial design and that the mounting surface accepts a 1 1/2 in inner and 1 3/4 in outer diameter. This ring does not suit fans with different flange profiles or curb configurations.

Highlights

  • Rubber construction resists vibration and weathering for durable outdoor use
  • Fits 1-1/2 in. inside diameter openings on compatible tubeaxial fans
  • 1-3/4 in. outside diameter matches Grainger 4C659 curb specifications
  • Designed for HA, PL, PNURF, PV, QBR and XB fan models
  • Dayton 991219 model ensures correct replacement part identification

Specifications

BrandDAYTON
TypeEnclosures

Questions about this item

Will the rubber ring degrade and need replacement over time?

The rubber ring is designed for continuous use with compatible tubeaxial fans and does not have a specified replacement interval.

What is the first limit reached when the ring is under sustained vibration?

The ring maintains its seal as long as the inside diameter of 1 1/2 in and outside diameter of 1 3/4 in remain within tolerance.

Does the rubber ring generate heat or noise when the fan runs all day?

The ring itself produces no heat or noise; it simply seals the fan curb interface during operation.

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