David -Model 304 SS -PTFE Coated Mandrels
304 SS Fine Wire Mandrels in stock from .004″ – .060″, PTFE coated and uncoated wire. Quick turn, low minimum orders.
New proprietary technology permits coating of fine wire with a thin, smooth, pinhole-free finish of Teflon®-PTFE fluoropolymer resin to provide release or slip properties and/or electrical insulation.
Applications include providing an internal forming mandrel for extrusion of small-diameter plastic tubing with extremely accurate bore and use as magnet wire in electrical coils.
Release coating thickness is typically 0.0002 ±0.0001 in. (5.1 µm ±2.5 µm). For electrical insulation, coating thickness is typically 0.001 in. (25.4 µm).
The manufacturer has coated silver-plated copper wire with diameters from 0.012 to 0.080 in. (0.3 to 2.0 mm) and on stainless steel wire from 0.001 to 0.040 in. (25 µm to 1 mm) in diameter.