2 1/2" NH / NST / NPSH Gasket (5-Pack)

Replacement rubber gaskets are for female couplings or adapters. These gaskets will fit National Hose thread "NH", National Standard Thread "NST" or National Pipe Straight Hose "NPSH".Forest Service Spec 5100-190National Stock Number (NSN - 5330-00-239-1877)This Wildland Fire Equipment gasket is used by the U.S. Forest Service (USFS), Bureau of Land Management (BLM), Bureau of Indian Affairs (BIA), U.S. Fish & Wildlife Service (USF&WS), National Park Service (NPS), State and Local governments, and other Forest Service–sponsored participants in the government-wide wildland firefighting effort.This is the same gasket found in the Defense Logistics Agency (DLA) Wildland Fire Equipment catalog or Fedmall.mil.