Description: .D. of the size of the tubing used. Many sizes conform to AMS 3584 and MIL ... and mechanical properties of PTFE Fluoropolymer. Std.

[Andy Pugh] found himself in need of a large linear slide, so he resorted to making his own with steel square tubing and a bit of PTFE (Teflon). The PTFE slider/spacers [Andy] needed a compact ...