Page 18 - Tyco-Grooved-Fire-Protection-Products-Installation-Handbook

16 GENERAL INFORMATION
Gasket Specifications 2 of 3
Plain End: This gasket is designed for use on Plain End fittings and used with the GRINNELL 909 Plain End Couplings.
Outlet: The Outlet Coupling gasket is designed to fit into the coupling housing and, once the outlet locating collar is in place, forms a protective seal around the cut opening of the pipe. This gasket is specifically used with Figure 522 Sprinkler Outlet coupling. The gasket is available in Grade “E” EPDM.