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Acetal (Polyoxymethylene)
Acetal, a polyoxymethylene (POM) polymer, is a high-performance engineering copolymer thermoplastic known for its high stiffness, low friction, excellent dimensional stability, and superior resistance. It is widely viewed as being interchangeable with Delrin in most applications; a key difference being that Acetal has a slightly lower melting point (135–159°C). Easy to machine and chemically resistant to fuels and solvents, Acetal is an outstanding choice for complex applications requiring tight tolerances in a variety of industries such as food processing, medical devices and automotive parts. (600)
A strong low-friction, and wear-resistant polymer.
Advantages of Acetal for Plastic Parts:
Acetal delivers many of the advantages of other polymers: Structural Integrity, Chemical, and Corrosion Resistance, and Dielectrical Properties for insulation. Acetal is not recommended for extremely high temperatures. Some unique attributes found in Acetal versus other polymers:
Strong fatigue endurance - Acetal can withstand cyclic compression and tensile stresses of up to 5,000 psi.**
Low water absorption - with a water absorption rate 0.2%, Acetal is ideal for parts utilized in wet environments.
Chemical Resistance - When considering POMs, Acetal is more resistant to strong caustic solutions than Delrin.
Applications Best Suited for this Material:
The dimensional stability, strength, and wear resistance delivered by Acetal make it an excellent polymer for mechanical applications with repetitive stress, weight-bearing, and high-friction applications: bearings, bushings, gears, and rollers. Its chemical resistance qualities make it an excellent choice for food processing and petroleum industry applications where this attribute is important.
Parts we make from Acetal:
Due to its strength, low friction, and dimensional stability, we use acetal for bearings, bushings, valves and washers for Oil & Gas, Medical and Automotive applications.
Contact us today to discuss your needs.
