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what is delrin???

legion1capone

Quarry Creeper
Joined
Feb 24, 2009
Messages
453
Location
Tucson, AZ
Polyoxymethylene (POM), in the USA also commonly known under DuPont's brand name Delrin, is an engineering plastic, a polymer with the chemical formula -(-O-CH2-)n-. It is often marketed and used as a metal substitute. Delrin is a lightweight, low-friction, and wear-resistant thermoplastic with good physical and processing properties and capable of operating in temperatures in excess of 90 degrees celsius (approximately 200 degrees fahrenheit). It is also known as polyacetal, acetal resin, polytrioxane, polyformaldehyde, and paraformaldehyde (the latter term is usually restricted to the short-chained polymer). Polyacetals are sold under the trade names Delrin, Kepital, Celcon, Hostaform, Iupital[2] and Ultraform[3], the last five being copolymers.

Delrin bridges the gap between metals and ordinary plastics with a unique combination of strength, stiffness, hardness, dimensional stability, toughness, fatigue resistance, solvent and fuel resistance, abrasion resistance, low wear and low friction.

So basically its a tough material with a very low coefficient of friction.
 
You won't beat McMaster-Carr for your Delrin. I got a 5 foot long piece of 1/4 inch Delrin for making lower links, plus a 3 foot long piece of 3mm all-thread from them all delivered for just under 11 dollars.
 
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