Alro logo Alro Steel was established in 1948 by Al and Robert Glick and has grown to include Alro Plastics, Alro Industrial Supply and Alro Metals Outlet.

Acetal Plastic Products - Acetal Sheet & Plate,
Acetal Rod, Acetal Tubing & Bushing

Acetal Copolymer


Acetal Colors - Natural and Black

Size and Availability:

Sheet / Plate:
- Thickness: 1/32”thk to 4”thk (standard increments)
- Sheet size: 24” x 48” and 48”x 120” standard

Rod / Rounds:
- Diameters: 1/8”dia to 10”dia
- Lengths: 4 ft, 5 ft, 8 ft and 10 ft, varies by diameter.

Tubing / Bushing stock:
- Diameters: 3”OD to 9-1/2”OD (wall thickness varies)
- Lengths: 8 foot standard, may vary with OD size

Hex Rod Stock:
- Hex sizes: 3/16” wide to 1” wide
- Lengths: 8 foot standard

Acetal Copolymer rods and sheets  Acetal Copolymer rods
As a semi-crystalline material, acetal is characterized by a low coefficient of friction and good wear properties-especially in wet environments. Because acetal absorbs minimal 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 4 to 1. Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents. Alro Plastics offers both homopolymer and copolymer grades of acetal including three enhanced bearing grade materials.


  • Low moisture absorption
  • High strength and stiffness
  • Easy to machine
  • Dimensionally stable for tight tolerances
  • No centerline porosity
  • FDA, USDA, NSF, Canada AG and 3-A Dairy compliant

Acetal Applications:

  • Bearings and bushings
  • Structural keels
  • Electrical components
  • Gears and rollers

Engineering Note:

In general, acetals do not perform as well in abrasive wear applications as nylons. Compensation for moisture related growth generally allows nylons to be used for wet, abrasive applications. If your application requires dimensional consistency in an abrasive, high humidity or submerged environment, Ertalyte® PET-P will often offer improved performance.