Insight Into Copolymer Acetal and   Delrin Rod Revealed

Differences Between Acetal Products

There are two general types of acetal resins available: Acetal homopolymer and acetal copolymers. Each type of acetal has its own set of advantages and disadvantages. Acetal (polyoxymethylene, POM) is a thermoplastic polymer commercialized in the early 1960’s. This material is produced through the polymerization of formaldehyde. Acetal Copolymer is more resistant against hydrolysis, strong alkalis and thermal oxidative degradation, and offers slightly improved chemical resistance over the homopolymer acetal or Delrin grade.

Our acetal copolymer is the only porosity free acetal product available today and is FDA compliant (when purchased in white rod, sheet and tube or black rod and tube).

Delrin® is a crystalline plastic which offers an excellent balance of properties that bridge the gap between metals and plastics. Delrin® sheets and rods possess high tensile strength, creep resistance and toughness.

The Delrin® was first created by Dupont, and has become the favorite brand name and the most frequently used Homopolymer. To take one example,, Delrin® is well suited for tiny dimensions, thin-walled bushings offering unsurpassed toughness along with rigidity, typical of homopolymer acetal. Composition of the Delrin resins can be found in four viscositie levels, to be able to meet with the flow requirements of a large array of end-use applications.

Every type of acetal has its own set of benefits and drawbacks, and yet they are alike in many facets. It is a proven gear material, Sheridan said. These two sorts of acetal has its own set of benefits and drawbacks, and yet they are alike in many facets. TECAFORM® acetal is the trade named for the Ensinger brand of acetal, and is appropriate for a wide selection of applications.

Ok, I Think I Understand Dupont Delrin Rod, Now Tell Me About Dupont Delrin Rod!

As the interior material cools, there’s an equivalent decrease in volume. As the interior material cools, there’s a corresponding decrease in volume. Most saddle materials, like brass or aluminum, are available at the local hardware shop. As a semi-crystalline material, acetal is characterized by a low coefficient of friction and good wear properties-especially in wet environments. Because acetal does not absorb amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption gives excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon almost 4 to 1.

Things You Should Know About Dupont Delrin Rod

If you are not certain of which plastic will fit your program, give us a call! Professional Plastics may expect you to offer certain information or data as a way to submit a review. Vinyl plastics are normally clear, higher impact, exceptional clarity and processing performance. Acetal resins have high tensile strength, stiffness, resilience, fatigue endurance and moderate toughness. The Acetal materials have a high resistance to organic solvents, excellent dimensional stability, a low coefficient of friction and outstanding abrasion resistance among thermoplastics. 

As a semi-crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties especially in wet environments. Because of its high strength, modulus, and resistance to impact and fatigue, Acetal is used as a weight-saving metal replacement. Acetal copolymer overcomes the common problem of centerline porosity in large shapes of Acetal Homopolymer (aka Delrin®) or Acetal Copolymer is preferred to Delrin® (Acetal Homopolymer) where centerline porosity is a concern. Acetal Copolymer is produced under several brand names including Celcon®, Ultraform®, Tecaform® & Pomalux®.