Dorma RTS88 90 NHO SZ3 Door Closer Parts

Genuine Dorma RTS88 90 NHO SZ3 replacement parts for commercial door closers. If your Dorma closer is not closing smoothly, leaking hydraulic fluid, or closing too fast or slow, these OEM parts restore proper function. Facility managers and building maintenance teams rely on authentic Dorma components to keep doors operating safely and reliably.

These parts are designed for Dorma RTS88 series closers in size 3 configuration. Verify your closer model and size before ordering. As an authorized Dorma dealer, E.D. Locks provides genuine parts backed by manufacturer expertise. Contact our sales team at sales@edlocks.com or 1-877-207-6067 for compatibility confirmation and installation guidance.