FASTNER SEAL, STEEL PLATED,
Black Buna-N (Nitrile) Thread Seal with an inside diameter of 0.5 in (12.7 mm). This thread seal seals at the threaded joint so the fastener itself carries the sealing function.
Material Buna-N (Nitrile / NBR)
Minimum_Temp -40°F (-40°C)
Maximum_Temp 250°F (121°C)