These washers are for tubular sight-glasses on steam boilers and other high pressure aggressive applications. Typically, rubber sight-glass washers last only a few months before cracking & leaking but these tough Tetra Max Teflon washers are made to withstand higher temperatures and pressures than the EPDM rubber washers.
Teflon Washers ** Up to 450°
***Price Per Dozen***
Tetra Max PTFE Protection Teflon washers below can be used on All Manufactures Liquid Level Gauges. If Sizing for Conbraco you will need to follow the Conbraco series below.
Series : 20-100 , 20-200 , 20-300 , 20-700 , 20-800
Series : 20-600 , 25-600 ,20-700 ,20-400
Size - 5/8" Glass Use Part # D3319-00
Series : 23-400 , 23-600 , 24-300 , 24-600
Size - 5/8" Glass Use Part # D3315-00
Size - 3/4" Glass Use Part # D3316-00