FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling; PTFE or Graphite packing optional certain NPT sizes only.Needle Valve, Hard Seat, 1 NPT Female - 1 NPT Female, Steel, 0.
It is now affordable for the average user and a key component when worki.M6-1.00 Socket Head Cap Screw, Titanium, 40 mm Length Grade 5 titanium is a common aerospace alloy that has been used in commercial aircraft for decades.