Sargent 82-2121 Fire Stop Assembly for 8200 & 7800 Series Mortise Locks

The Sargent 82-2121 is a genuine OEM Fire Stop Assembly designed as a direct replacement component for Sargent 8200 Series and 7800 Series mortise locks. Also referenced as the Sargent part number 82-2121, this assembly ensures your Sargent mortise lock continues to perform to its original factory specifications. Sourced directly from Sargent, this is an authentic replacement part — not an aftermarket substitute — providing the precise fit and function required for reliable mortise lock operation.

Institutional Grade Features & Benefits

• Genuine OEM Component: Manufactured by Sargent to exact factory tolerances, ensuring seamless compatibility and dependable performance in your existing 8200 or 7800 Series mortise lock hardware.
• Direct Replacement Fit: Engineered specifically for the Sargent 8200 and 7800 Series mortise lock platform, eliminating guesswork and reducing installation time for locksmiths, facilities managers, and door hardware professionals.
• Maintains Mortise Lock Integrity: Restoring an original assembly component helps preserve the full mechanical performance of the mortise lock, supporting continued compliance with the door hardware specifications the lock was originally installed to meet.
• Broad Series Compatibility: Covers a range of 8200 and 7800 Series function configurations, making this a practical stocking item for commercial building maintenance and institutional facility management teams.
• Professional-Grade Durability: Built to the quality standards expected of Sargent commercial-grade mortise lock components, suitable for high-traffic institutional, commercial, and educational facility applications.

Applications

The Sargent 82-2121 Fire Stop Assembly is appropriate for commercial, institutional, healthcare, educational, and government facility applications where Sargent 8200 Series or 7800 Series mortise locks are installed. It is the correct replacement part for facilities maintenance teams, door hardware distributors, and locksmiths servicing Sargent mortise lock hardware in the field.

Compatible Lock Functions

Compatible 8200/7800 Series mortise lock functions: 8228

Parts List Illustration

Technical Details