Fits conventional sized NRV such as used by Primus & Optimus. These modern versions of the old lead washers are made from 1mm HDPE & prevent the valve seizing in the bottom of the pump thereby facilitating easier removal for maintenance. They are a tight fit so they don't slip over the threaded section when refitting the valve & need to be 'screwed' into place over the threads - just like the old lead washers - except these are not so susceptible to being damaged in the process.
OD 12mm ID7.5mm
Valve shown for guidance only.
Product Code: NRVEXT01 - C-C1
