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Delrin is a trademarked name for acetal resins that are semi-crystalline thermoplastic polymers. This type of material is also known by the abbreviation POM or polyoxymethylene.  It has gained popularity since first being introduced to the commercial marketplace in 1960. Since that time, it has proven to be both reliable and durable and therefore used in many applications across the globe.

Some of the most commonly used applications can be found in industries such as: automotive, hardware, construction, appliances and electronics.

Some of the exceptional key features of Delrin:

  • Rigid
  • Impressive Mechanical Strength
  • Lubrication
  • Resistant to Fatigue
  • Impact resiliency
  • Impervious to exposure to moisture, gas and chemical solvents
  • Stable in low temperatures -50 degrees C
  • Easy to fabricate and manufacture

Acetal resins have the ability to come in various compositions and are classified into the following groups:

  • Standard
  • Toughened
  • Low friction
  • Glass-filled/Reinforced
  • UV-stabilized

Some of the following grades have been classified below:

High Viscosity

  • Delrin® 100/II100
  • Delrin® 100P
  • Delrin® 111P

Medium-High Viscosity

  • Delrin® 311DP

Medium Viscosity

  • Delrin® 500P
  • Delrin® 511P

 Low Viscosity

  • Delrin® 900P

Toughened Grades:

  • Delrin® 100ST
  • Delrin® 100T
  • Delrin® 500T

There are more classifications than just these few, as this material is incredibly versatile. As with any acetal polymer however, whenever it is heated beyond capability, it can become tinted/discolored and form dangerous gases. Repeated exposure to formaldehyde emissions could result in things form topical irritation to respiratory distress. It is important that engineers and all others that handle this industrial plastic use caution and take the appropriate action. It is further recommended that the proper ventilation and professional exhaust systems be installed to prevent any emissions.

When any resin is being molded, the operator must be familiar and educated with the warning signs of decomposition and how to take appropriate action.

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