O-Ring Sealed Sprinkler

In previous public notices and published articles UL has recommended the immediate replacement, or representative sample testing, of all systems incorporating fire sprinklers equipped with an O-ring water seal.  To assist property owners, authorities having jurisdiction and others in identifying “O”-ring sealed sprinklers, UL developed this  list of O-Ring Sealed Sprinklers and has provided this article entitled Maintaining a High Level of Fire Sprinkler Performance.

For more information or if you have any questions, please contact:

Mr. Kerry Bell
UL LLC.
333 Pfingsten Road
Northbrook, IL.  60047
Tel:      847-664-2629
E-mail:  Kerry.m.bell@ul.com