Shibaam Polymers

POM Square Rods

POM Square Rods

Polyoxymethylene (POM) square rods, also known as acetal square rods or Delrin square rods, are solid, four-sided bars POM is recognized for its excellent mechanical properties, low friction, and dimensional stability. POM square rods, with their unique square cross-section, offer specific advantages in various applications.

POM’s dimensional stability and mechanical properties make square rods suitable for use in various automation components, including slides, guides, and conveyor systems.



Some of the outstanding characteristics are as follows:

  • High Mechanical Strength
  • Low Friction Properties
  • Wear and Abrasion Resistance
  • Chemical Resilience
  • Dimensional Stability
  • Low Moisture Absorption
  • Thermal Insulation
  • Versatile Applications

Typical Application

Exploring the Versatility of POM Polyacetal Across Industries

Gear wheels with small modulus

Used in precision machinery where compact design and fine tooth engagement are required.


Employed in machinery to convert rotary motion into reciprocating, enabling precise control and synchronization of movements.

Heavily loaded bearings and rollers

Used in industrial equipment like mining machinery and construction equipment to support .

Bearing and gears with small clearances

Essential in precision engineering applications such as aerospace and medical devices.

Valve seats

Utilized in internal combustion engines and industrial valves to provide a sealing surface, enhancing fluid flow control.

Snap fit assemblies

Employed in consumer electronics and product packaging to securely and easily join components without need for fasterners.

Dimensionally stable precision parts

Crucial in optics ensuring accurate alignment and performance in telescopes.

Electrically insulating components

Vital in electronics to prevent electrical conduction and ensure safety, used in circuit boards, connectors.

Mechanical Properties

Performance and Test ConditiomTest MethodUnitTyical Values
Notched impact strength of cantilever beam, 23°CASTM D256J/m10
Yield tensile strength, 23°C, 50mm/minASTM D638Mpa60
Elongation at break, 23°C, 50mm/minASTM D638%25
The bending strength. 23C, 2mm/minASTM 790Mpa70
Bending modulus, 23°C, 2mm/minASTM 790Mpa2500
Shore hardness DASTMD224085
The DensityISO 1183g/cm31.42

Thermal Properties

Performance and Test ConditiomTest MethodUnitTyical Values
Thermal deformation temprature(HDT) (0.45Mpa)ISO 75°C120
Melting point°C170
Long term operating temperature°C100
Short-term operating temperature°C120
Thermal conductivityDIN 52612-1W/(K-M)0.33
Linear expansion coefficientASTM D69610-5-1/K13

Electrical Performance

Performance and Test ConditiomTest MethodUnitTyical Values
Dielectric strengthASTM D150KV-mm19
Dielectric loss coefficientASTM D1500.007
The volume resistanceASTM D257Ω.cm1015
The surface resistanceASTM D257Ω1015
Dielectric constantASTM D1493.7