We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black nitrile gasket ring for four inch pipe connections

Gruvlok

Gruvlok Gasket Grade T 4 In Nitrile 390079200

SKU CH-90Q1-SFJCX

A nitrile gasket rated from -20 to 180 °F for Grade T 4-inch piping, ASTM D2000 compliant and NSF certified

  • MaterialHAWA
  • Nitrile construction withstands -20 to 180 °F
  • Grade T specification meets ASTM D2000 standard
  • NSF certified for potable water applications
  • Compatible with manufacturer numbers 390003085 and 390013548
  • Medium density polyethylene design ensures reliable sealing

Gruvlok Grade T 4-Inch Nitrile Gasket

This gasket is a replacement sealing component for compatible Gruvlok piping assemblies. It is intended for maintenance crews and installers who need a direct-fit nitrile seal rated to the Grade T specification.

NSF Certified ASTM D2000 Compliance

The gasket meets ASTM D2000 standards and carries NSF certification, confirming its suitability for potable water and general plumbing service. These approvals allow the part to be specified in projects that require documented material compliance.

-20 to 180 Degrees F Operating Range

The nitrile material is rated for continuous service between -20 and 180 degrees Fahrenheit, which defines the thermal limits for the intended piping system. Systems operating outside this temperature window will require a different grade of seal material.

Highlights

  • Nitrile construction withstands -20 to 180 °F
  • Grade T specification meets ASTM D2000 standard
  • NSF certified for potable water applications
  • Compatible with manufacturer numbers 390003085 and 390013548
  • Medium density polyethylene design ensures reliable sealing

Specifications

BrandGRUVLOK
MaterialHAWA

Questions about this item

How often will I need to replace the nitrile gasket?

The nitrile material handles -20 to 180 degrees F, so replacement depends on how often the system cycles through that temperature range.

What temperature limit will the gasket hit first during continuous operation?

Sustained exposure above 180 degrees F will degrade the nitrile before the lower -20 degree limit becomes relevant.

Does the gasket generate any heat or noise when the system runs all day?

As a static seal the gasket produces no heat or noise; it simply contains the fluid within the rated temperature range.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.