POM Extrusion & Precision Machining Services
Plasticpartsmfg delivers custom POM (Polyoxymethylene / Acetal) profiles and CNC-finished components directly from our manufacturing facility. We support engineering teams worldwide with reliable stock shapes, custom extruded profiles, and secondary precision machining engineered for tight tolerances and demanding physical environments.
Engineering Properties of Polyoxymethylene (POM)
POM is a high-performance semi-crystalline engineering thermoplastic known for maintaining functional integrity in aggressive mechanical systems.
High Mechanical Strength
Delivers exceptional tensile stiffness, impact toughness, and continuous load-bearing performance under persistent cyclic stress.
Low Friction & Wear
Inherent lubricity eliminates galling, making POM the benchmark material for dynamic components like gears, cams, rollers, and slides.
Dimensional Stability
Minimal moisture absorption and thermal expansion resilience ensure critical tolerances stay within specification in humid or wet environments.
Broad Chemical Resistance
Exceptional resistance to hydrocarbon fuels, industrial solvents, grease, lubricants, and standard cleaning reagents.
Dielectric Insulation
Superior dielectric strength and high volume resistivity satisfy demanding terminal blocks, electronic brackets, and connector housings.
High Elastic Recovery
Memory retention and resilience under repeated deformation make POM ideal for snap-fit joints and non-permanent mechanical clips.
Bridging Raw Extrusion with CNC Precision
We combine continuous profile extrusion with high-speed multi-axis CNC finishing. This hybrid approach delivers production-grade Acetal components quickly, avoiding the cost and timeline constraints of custom steel tooling.
| Capability Domain | Technical Specification |
|---|---|
| Primary Process | Custom POM profile extrusion, rod extrusion, plate, and custom hollow sections |
| Secondary Process | 3-Axis & 5-Axis CNC milling, multi-spindle turning, precision slotting, drilling |
| Tolerances | ±0.05 mm to ±0.20 mm (subject to part geometry and drawing specifications) |
| Material Grades | POM-C (Copolymer for thermal/chemical stability) & POM-H (Homopolymer for maximum mechanical stiffness) |
| Surface Finishing | Precision deburring, vibratory polishing, internal/external threading, insert assembly |
| Production Volume | Rapid prototypes, pilot batches, bridge production, and recurring low-to-mid volume runs |
Extrusion + Machining vs. Injection Molding
Choose the most cost-effective and agile manufacturing strategy based on your project volume, wall thickness, and geometric parameters.
When to Select Extrusion + Secondary Machining
Ideal for cost-effective functional prototypes, early pilot batches, or low-to-medium continuous volume production without allocating high upfront capital for steel mold design and fabrication. Excellent for constant cross-section profiles needing cut-to-length features, specialized bores, slots, or threads.
When to Select Injection Molding
Recommended when components incorporate multi-directional internal lattices, intricate rib structures, or 3D geometries that cannot be economically shaped from continuous stock profiles. Preferred when projected run volumes sufficiently amortize upfront tooling investments over hundreds of thousands of units.
Supporting Your Design Iterations & Quality Control
Every file sent to Plasticpartsmfg undergoes comprehensive Design for Manufacturing (DFM) verification. Our tooling and machining engineers review wall thicknesses, draft allowances, and cutter clearance constraints prior to raw stock extrusion or CNC setup.
Common Industrial Applications
Our custom extruded and machined Acetal parts deliver predictable mechanical service across diverse commercial and heavy-duty industries.
Industrial Automation
Low-friction conveyor guides, star wheels, structural bushings, and linear slideways ensuring smooth, continuous manufacturing flow.
Electronics & Power
Dielectric switch components, high-voltage connector isolators, terminal boards, and non-conductive structural mounting frames.
Automotive Engineering
Fuel sender modules, wiper linkages, door locking mechanism gears, and interior mechanical actuators requiring quiet wear-resistance.
Medical Equipment
Chemical-resistant laboratory instrument components, diagnostic device chassis sliders, and non-implantable mechanical linkages.
Request an Engineering Quote
Submit your project technical specifications. Our engineers will review your files, verify dimensional feasibility, and issue a structured quote along with standard manufacturing lead times.
Accepted File Formats
- 3D CAD: STEP (.stp), IGES (.igs), STL
- 2D Drawings: PDF with clear GD&T and critical dimensions
- R&D Assistance: Specify grade preferences (POM-C or POM-H)