• Commonly called POM, it is a thermoplastic with high strength and stiffness. As a semi-crystalline material, Acetal offers excellent dimensional stability. It is also characterized by a low coefficient of friction. Great temperature range (-49 F to + 212 F)
  • Easily machinable
  • Low moisture absorption
  • Good wear and abrasion resistance
  • FDA grades readily available

POM is an extremely string material having very high impact resistance. The resistance to fatigue is so high in this material that it is considered equivalent to metal. It is used in place of metal in applications that require a lighter alternative. It is used in applications like gears, fasteners, bearings, and more.


SSP Manufacturing, Inc.

Phone: 1-908-852-3125     Email: gm@sspseals.com

Data Sheet for POM (Polyoxymethelene/Polyacetal)

Property Specification Value
Hardness ISO 868 85 +/- 3 shore
Ball Indentation Hardness DIN 53 456 (H135/30) 23000 psi
Tensile strength ASTM D 4745-79 10100 psi
Elongation at break ASTM D 4745-79 40%
Young's Modulus DIN 53 457 435000 psi
Density/Specific Gravity DIN 53479 1.41 g/cm3
Compressive Strength DIN 53 455 12800 psi
Thermal Conductivity DIN 52 612 0.25 J x 103/ K
Coefficient of Thermal Expansion 25C - 200C 11 K-1*10-5
Coeffecient of Friction   0.28 µ
Min. Service Temperature   -49 deg. F
Max. Service Temperature   212 deg. F

This material is FDA Approved (FDA CFR 21-177.2600 Compliant)
FDA Approved Seals & Gaskets