Honeywell 15PA258 Sealing Washer for Toggle Switches

The Honeywell 15PA258 sealing washer is a dedicated toggle switch accessory designed to support panel sealing in switch installations that require a cleaner and more controlled interface. Searches for Honeywell 15PA258 sealing washer, Honeywell 15PA258 toggle switch seal, and Honeywell sealing washer for toggle switches are common when engineers or buyers need the correct sealing element for panel-mounted switch hardware.

What the Honeywell 15PA258 Is Designed For

The Honeywell 15PA258 is identified as a sealing washer for 15/32-32 UNS bushing toggles. It is described with a gray silicone elastomer construction and a listed inner diameter of approximately 11.84 mm. In a switch assembly, that matters because the washer helps support a better seal around the mounting interface. Even though it is a small accessory, it can play an important role in preserving the integrity of the panel opening around the toggle switch.

Why a Sealing Washer Matters

Panel-mounted toggle switches are exposed to handling, dust, splashes, environmental variation, and routine mechanical movement. Without a proper sealing element, the transition point between panel and switch hardware can become a weak spot. A correctly matched Honeywell 15PA258 toggle switch sealing washer helps create a more controlled fit and can support cleaner installation quality, particularly where long-term maintenance standards matter.

Because the part is specifically associated with bushing-mounted toggle hardware, it is more useful than a generic washer when the installation calls for dimensional consistency and material suitability. Silicone elastomer is often preferred in these contexts because it provides flexibility and sealing support without turning the accessory into a rigid, unforgiving interface.

Where the Honeywell 15PA258 Is Most Useful

This part is relevant in panel rebuilds, switch refurbishment, replacement-part sourcing, maintenance kits, and documentation-controlled assemblies. It is especially useful when technicians want to restore the original sealing approach of a toggle switch rather than approximating the fit with an unrelated hardware item.

FAQ

Is the Honeywell 15PA258 a complete switch?

No. It is a sealing washer accessory, not a complete toggle switch.

What type of switch hardware is it used with?

It is listed for use with 15/32-32 UNS bushing toggle switch configurations.

What material is the Honeywell 15PA258 made from?

The part is described as being made from gray silicone elastomer.

Why is a sealing washer important in a toggle switch installation?

It helps improve the sealing interface around the panel opening, supports cleaner hardware fit, and contributes to better installation consistency.

When should the 15PA258 be specified?

It should be specified when the original switch installation requires a correctly matched sealing washer for service, maintenance, replacement, or panel restoration work.

For more information, visit Honeywell.