Page 141 - GRINNELL Mechanical Products Catalogue

GASkETS
Gasket Styles
Tech Data Sheet: G610
Standard
The standard style gasket, with a “C” shape configuration, is the most commonly used . It is provided as the standard gasket in the Figure 705, 707, 770, 772, 405, and 472 GRINNELL Couplings . The gasket is available in Grade “E” and “EN” EPDM, Grade “T” Nitrile, Grade “L” Silicone, and Grade “O” Fluoroelastomer .
Tri-Seal
The tri-seal gasket is designed to close off the gap or gasket cavity . This is accomplished by positioning the centre “rib” of the gasket over the gap between the pipes . The tri-seal gasket has two tapered sealing edges in addition to the centre rib for additional strength and sealing .
The Tri-Seal gasket can be used with the Figure 705, 707, 770, 772, 405, and 472 GRINNELL Couplings . It is recommended for use in low temperature and vacuum services (greater than 250mm Hg (10" Hg)) applications and potable water systems . Note only a petroleum-free silicone based lubricant is recommended for low temperature applications . The gasket is available in Grade “E”, “EN” EPDM, and Grade “T” Nitrile .
Note: Rigid couplings are recommended for vacuum and low temperature applications.
Reducing Coupling
The reducing gasket is provided with ribs used to position the larger pipe so that the sealing lip is located on the sealing surface of the pipe . This gasket is used only with the Figure 716 GRINNELL Reducing Coupling and is available in Grade “E” EPDM and Grade “T” Nitrile .
Reducing couplings are not recommended for low temperature applications .
Flange Adapter
This gasket is specifically designed for use with the Figure 71 Flange Adapter . The gasket has an optimum amount of rubber to provide a dependable seal between both the pipe and mating surface . The gasket is available in Grade “E” EPDM and Grade “T” Nitrile .
Mechanical Tee and Strap
The gasket provides a compression type seal, which is designed to conform to the exterior curve (OD) of the pipe . This design is unique to both the Figure 730 Mechanical Tee (threaded and grooved) and Figure 40-5 Strap . The gasket is available in Grade “E” EPDM and Grade “T” Nitrile .
Note: When used in low temperature applications, use a petroleum-free silicone based lubricant, otherwise no lubricant is required on Mechanical Tee and Strap gaskets.
outlet Coupling
This gasket is specifically designed for use with the GRINNELL Figure 702 Outlet Coupling .
Plain End Coupling
This gasket is designed for use with the Figure 909 Plain End Coupling .
GRINNELL gaskets are designed exclusively for use with GRINNELL manufactured coupling housings. The mixing of other manufacturer’s gaskets or housings with GRINNELL gaskets or housings may result in pipe joint leakage or failure and will void the GRINNELL Mechanical Products limited warranty.
Refer to back cover for country-specific customer care numbers.
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Gaskets