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The ASC Engineered Solutions 390079168 is a 3-inch Buna Nitrile replacement gasket designed for use with Gruvlok 7001 and 7000 series grooved pipe couplings. Buna Nitrile (also known as NBR) is a synthetic rubber compound well suited for a wide range of fluid service applications, providing a reliable seal within the coupling housing. This gasket seats in the coupling groove to maintain a pressure-tight joint between grooved-end pipe sections. It is installed by pipefitters, plumbers, and mechanical contractors as part of routine coupling service or new grooved piping assembly work.
This gasket is intended for use in grooved mechanical piping systems where a 3-inch coupling is employed. Grooved piping is common in commercial and industrial HVAC hydronic systems, fire protection piping, and general plumbing distribution. The orange color coding of this gasket identifies the Buna Nitrile material grade, which is a standard field identifier used by installers when selecting the correct gasket for the fluid service at hand. The 7001 and 7000 Gruvlok coupling housings are the specified compatible coupling series for this gasket.
Designed for use with Gruvlok 7001 and 7000 series grooved mechanical pipe couplings in 3-inch nominal size.
Gasket replacement and coupling assembly on grooved piping systems is typically performed by licensed pipefitters or plumbers. Before servicing any coupling, isolate the piping section, depressurize the line, and drain fluid as needed to ensure a safe working environment. Lubricate the gasket with an appropriate coupling lubricant prior to installation to allow proper seating within the coupling housing. Follow the coupling manufacturer's assembly instructions and applicable mechanical codes when torquing coupling bolts and nuts.
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