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Black rubber gasket ring 8 inch nitrile grade T

Gruvlok

Gruvlok Gasket Grade T 8 In Nitrile 390079267

SKU CH-Z5D6-T5D41

Nitrile gasket rated from -20 °F to 180 °F, ASTM D2000 compliant and NSF certified for 8-inch piping systems

  • MaterialHAWA
  • Grade T nitrile gasket rated for -20 °F to 180 °F
  • Complies with ASTM D2000 standard for material performance
  • NSF certified for potable water system compatibility
  • Designed for 8-inch Gruvlok piping connections
  • Compatible with Gruvlok models 390003143 and 390013571

Gruvlok Gasket Grade T 8 In Nitrile

The Gruvlok Grade T gasket is a nitrile sealing component sized for 8-inch piping systems. It serves maintenance crews and facility engineers who need a reliable joint seal in water or fluid-handling installations.

Replaces worn Grade T gaskets in existing Gruvlok

When an original seal hardens, cracks or leaks after temperature cycling, this Grade T nitrile gasket restores the joint integrity. The upgrade is worth it whenever the system operates between -20 and 180 degrees F and the coupling matches manufacturer numbers 390003143 or 390013571.

Fits Gruvlok couplings 390003143 and 390013571

The gasket sits inside the coupling housing and requires no additional hardware beyond the standard bolts and nuts. It frees the installer from sourcing separate sealing materials and meets ASTM D2000 and NSF compliance for potable-water contact.

Highlights

  • Grade T nitrile gasket rated for -20 °F to 180 °F
  • Complies with ASTM D2000 standard for material performance
  • NSF certified for potable water system compatibility
  • Designed for 8-inch Gruvlok piping connections
  • Compatible with Gruvlok models 390003143 and 390013571

Specifications

BrandGRUVLOK
MaterialHAWA

Questions about this item

What pipe size does the 8 in Gruvlok Grade T gasket fit?

The gasket is sized at 8 in and is made for use with manufacturer numbers 390003143 and 390013571.

How do I install the nitrile Grade T gasket without damaging it?

Clean the groove, seat the gasket evenly without twisting, then torque the bolts in a star pattern to the specified value.

When should I replace the nitrile gasket in a system that runs up to 180 °F?

Inspect annually; replace if you see cracking, hardening, or any leak path, especially after prolonged exposure near the 180 °F limit.

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