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Acetal Sheet, Rod & Tube (Delrin®/POM)

Buy cut-to-size acetal (Delrin®/POM) sheet, rod, and tube in homopolymer and copolymer grades, including AF/PTFE bearing blends and ESD variants for tight-tolerance parts.


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What is Acetal/Delrin® (POM)?

Interstate Plastics is proud to offer acetal - an engineering plastic used in precision applications requiring high stiffness, low friction and excellent dimensional stability.

Acetal is an ideal plastic solution due to desirable toughness properties and extreme temperature performance, making it widely used in auto, mechanical, electrical, food and beverage, medical and consumer industries.

Acetal plastic is known by brand names including Delrin®, Tecaform® and Sustarin®. Delrin®, provided by Interstate Plastics, is the leading trusted name for acetal homopolymer.

  • High strength and stiffness
  • Excellent dimensional stability
  • Continuous use temperature of 180°F
  • Porosity free
  • Consistent properties in wet or moist environments
  • Very low moisture absorption
  • Excellent electrical properties
  • Easy to machine to close tolerances
  • FDA & USDA compliant grades available

Copolymer vs. Homopolymer (Acetal vs. Delrin®)

Delrin® is DuPont's trade name for acetal homopolymer.

Acetal is the name generally used in the plastics industry to refer to acetal copolymer.

Copolymer acetal features no center-line porosity and has better property retention at elevated temperatures. It's available in FDA compliant grades and has better chemical resistance to hot water and high pH (basic) solutions versus Delrin®.

In comparison to acetal copolymer, homopolymer Delrin® features a higher crystallinity, providing better mechanical properties including tensile strength, creep resistance and impact strength.

Delrin® can operate in wet environments with little effect on performance and an increase in part life. Its natural grade is FDA, NSF and USDA compliant.

Key Physical & Mechanical Properties (Acetal/Delrin®)

Property Acetal
Copolymer
Delrin
Homopolymer
Density (lb/in3) 0.0510.051
Water Absorption @24 Hours 0.2%0.2%
Tensile Strength (psi) 9500 11000
Tensile Modulus (psi) 400,000 450,000
Elongation at Break 30% 30%
Flexural Strength (psi) 12000 13000
Flexural Modulus (psi) 400,000 450,000
Compressive Strength (psi) 15000 16000
Hardness, Rockwell M88/R120 M89/R122
Dielectric Strength (V/mil) 420 450

*Values listed are typical and are meant only as a guide to aid in design. Field testing should be performed to find the actual values for your application.

Acetal Sheet — Copolymer (POM-C), General Purpose

Delrin® Sheet — Homopolymer (POM-H)

Delrin offers an excellent balance of properties that bridge the gap between metals and plastic.

Delrin Sheet - Black

Delrin vs Acetal - Delrin sheets and Delrin plastic offer an excellent balance of properties.

Delrin Sheet - Natural

Acetal Rod — Copolymer (POM-C), General Purpose

Delrin® Rod — Homopolymer (POM-H)

Acetal Tube — Copolymer (POM-C)

Specialty Acetal Sheet — FDA, ESD, Detectable

Specialty Acetal Rod — FDA, ESD, UV/Bearing

Turcite® A & X Rod — Acetal-Based, Internally Lubricated

Turcite A is a self-lubricating engineered thermoplastic.

Turcite Rod - A

Turcite X is a self-lubricating engineered thermoplastic.

Turcite Rod - X

Material Sample Packs — Selection & Testing

Acetal Machining & Fabrication Tools

Prop 65 Warning WARNING: This product can expose you to chemicals including Formaldehyde, CAS 50-00-0, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Prop 65 Warning WARNING: This product can expose you to chemicals including Hexachlorobenzene, CAS 118-74-1, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

 


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