STI KIT-G01331 Replacement Gasket for Universal Stopper Spacer
Overview
The KIT-G01331 is a replacement gasket designed to seal and stabilize universal stopper spacer assemblies in 9VDC strike installations. This component addresses wear and environmental degradation of original gasket material — a common maintenance item when refreshing older strike hardware or troubleshooting water ingress and misalignment issues in outdoor or high-traffic door frames. Install this gasket between the stopper frame and mounting surface to restore proper compression and weather sealing.
Compatibility
The KIT-G01331 is engineered for universal stopper spacer systems operating at 9VDC, including STI Weather Stopper II and Stopper II applications. Verify your existing strike assembly matches a universal spacer design before ordering — this gasket is not a universal fit across all strike brands. Confirm the 9VDC voltage requirement aligns with your strike power supply.
Installation Notes
Position the gasket over the mounting surface before securing the stopper frame with the four fixing screws (7mm holes, masonry-grade fasteners recommended for concrete or brick). Ensure the gasket sits flat and fully compressed under the frame to prevent water migration around cable entry points. For surface-mount installations, use the provided spacer inserts to blank off unused cable holes, then position the gasket to seal those openings. Do not over-torque frame fasteners — achieve firm contact without crushing the gasket material, which can reduce sealing effectiveness.
