Sargent 351C Closer Cover | For 351 Powerglide Series

The Sargent 351C is a genuine OEM replacement cover designed specifically for the Sargent 351 Powerglide Series surface door closers. This high-impact, fire-rated plastic cover provides a clean, professional finish while shielding the closer’s heavy-duty cast-iron body and critical adjustment valves. Available in the popular EN (Aluminum) finish, the 351C prevents unauthorized tampering with door speeds and protects the internal mechanism from dust and environmental wear.

Professional-Grade Features & Benefits

• Direct 351 Series Compatibility: Precision-molded to fit perfectly over the standard 351 closer body, ensuring a secure and rattle-free installation.
• Vandal-Resistant Shielding: Fully encloses the regulated valves for sweep, latch, and backcheck, ensuring only authorized maintenance personnel can adjust the door’s closing cycle.
• High-Impact Construction: Manufactured from heavy-duty, fire-rated ABS plastic designed to resist the dents, scratches, and impacts common in high-traffic commercial corridors.
• Architectural Aluminum Finish (EN): Features a factory-sprayed aluminum finish that seamlessly matches existing Sargent 351 series hardware and trim.
  
• OEM Reliability: Using a genuine Sargent 351C ensures the cover meets original factory specifications for heat resistance and mechanical fitment.

Technical Specifications

• Model Number: 351C
• Part Type: Door Closer Housing Cover
• Compatibility: Sargent 351 Powerglide Series
• Finish: EN (Aluminum)
• Material: High-Impact Fire-Rated Plastic

The Sargent 351C is essential for maintaining the life-safety integrity of your facility. A missing or damaged cover exposes the sensitive internal valves to debris and unauthorized "tweaking" by staff or tenants. This can lead to doors slamming—which damages the frame—or failing to latch, which compromises fire security. Replacing a cracked 351C is a low-cost way to avoid expensive repairs to the closer body itself.

Installation Note: For the smoothest operation and to prevent the cover from rattling, the closer body must be perfectly stabilized. We recommend mounting the 351 closer using high-strength thru bolts, especially on hollow metal, aluminum, or mineral core doors. A rock-solid, thru-bolted connection prevents the closer from vibrating against the 351C cover, which is the leading cause of cracked mounting clips.