Sargent 351 UO EN Door Closer

Product sku: sku_12 Availability: In Stock


Sargent 351 UO EN Closer

The Sargent 351 closer is a non handed grade 1 and the most common, most desirable of closers. This closer is the second heaviest duty closer that Sargent supplies.  The closer mounts on the hinge or better known as the pull side of the door.  The UO or universal arm is included with this closer. This allows you to install the closer in standard top jamb or parallel applications. Many other finishes and arms available. For more information or special order inquiries please contact someone from our sales staff and we will be glad to assist you. 



  • ANSI/BHMA A156.4 Grade 1
  • Conforms to UL10C and UBC for positive pressure fire test
  • UL Listedand cUL Listed to Canadian Safety Standards listed for use on fire doors                                                                                                                                


Note: Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening, and Sargent Manufacturing Company makes no representations or warranties concerning what such impact may be in any specific situation. When retrofitting any portion of an existing fire rated opening, or specifying and installing a new fire-rated opening, please consult with a code specialist or local code official (Authority Having Jurisdiction) to ensure compliance with all applicable codes and ratings.


  • 10-year warranty
  • Versatile mounting applications permit standard, top jamb, parallel and track installations
  • Adjustable spring power allows 351 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory
  • One door closer body for all applications. All 351 are non-handed.
  • Meets ADA requirements in all applications except Push Side Track application
  • High impact non-corrosive plastic covers standard, metal optional. Both secured with two machine screws
  • All weather capabilities
  • Captivated brass valves
  • Interchangeable forged steel arms
  • Standard and parallel arms
  • Push and pull track arms (including double egress)
  • Heavy duty forged steel arms are finely finished and interchangeable between SARGENT 351, 1431 and 281 Series Innovation
  • Standard pressure relief valves for both opening and closing cycles protect the door & frame from damage caused by abuse


Heavy Duty Construction

  • Heat treated full closed rack and pinion provide control from the full open position
  • Heavy duty one piece die cast aluminum silicon alloy body with 14% silicon provides superior strength and wear resistance
  • 1/2" arm engagement over a 7/16 square spindle ensures a wear-resistant tight joint



  • Machine screws and self tapping screws provided for closer and arm
  • In addition, wood screws supplied when installed on wood doors without through bolts


Full Complement of Arm Types

  • Interchangeable forged steel arms
  • Standard and parallel arms
  • push and pull track arms (including double egress)
  • Heavy duty forged steel arms are finely finished and interchangeable between SARGENT 351, 1431 and 281 series



  • Brass body low sensitivity control valves offer separate regulating for door speed, latching, backcheck and optional delayed action
  • All valves are controlled by an 1/8" Allen wrench to discourage tampering and are captivated to prevent removing valves from the body and damaging door closer
  • Adjustable backcheck (standard) protects the door and hardware from damage during the opening cycle
  • Adjustable delayed action (optional) permits easy access for physically impaired individuals
  • Valves are captivated to prevent accidental removal

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