Polyoxymethylene (POM resin)
Appearance: POM (Polyoxymethylene) pellets typically appear as opaque, white, or off-white small granules with a smooth, uniform texture.
HS Code: 39071000
Other Names:
Polyoxymethylene
Polyacetal
Acetal resin
Polymethylene glycol
Polyformaldehyde
POM plastic
Identifiers:
CAS Number: 9002-81-7
ECHA InfoCard: Not widely listed (varies by specific grade)
UNII: Not applicable
CompTox Dashboard (EPA): Not widely specified
Properties:
MF: (CH₂O)ₙ
Density: 1.41–1.42 g/cm³
Melting Point: 165 to 175 °C (329 to 347 °F; 438 to 448 K) *Data sourced from general material science references
Sales Plastics offer POM resins in various grades to meet your specific needs. Unsure which one fits your project? Send us your requirements, and our team will respond within 24 hours
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Supply Various Grades of POM pellets
| Grade No. | Manufactuer | Brand | MFI g/10min | Properties | Application |
| M90 – 44 | Polyplastics | DURACON | 9 | DOWNLOAD | Manufacturing automotive and industrial components |
| M90 – 57 WK2001 | Polyplastics | DURACON | 9 | DOWNLOAD | Making parts for industrial conveyor systems |
| M25 – 44 | Polyplastics | DURACON | 2.2 | DOWNLOAD | Producing high – viscosity – required products |
| M25S | Polyplastics | DURACON | 2.5 | DOWNLOAD | Molding general – purpose plastic parts |
| M270 – 44 | Polyplastics | DURACON | 27 | DOWNLOAD | Forming thin – walled injection – molded parts |
| GB – 25 | Polyplastics | DURACON | N/A | DOWNLOAD | Making glass – filled plastic items |
| M25 | Celanese | Celcon | 2.5 | DOWNLOAD | Manufacturing mechanical parts needing toughness |
| M90 | Celanese | Celcon | 8 | DOWNLOAD | Producing springs and navigational instruments |
| M270™ | Celanese | Celcon | 23 | DOWNLOAD | Molding parts in complex molds |
| KP20 | Celanese | AMCEL | 8 | DOWNLOAD | Forming small – sized complex components |
| KP30 | Celanese | AMCEL | 27 | DOWNLOAD | Making thin – walled plastic products |
| C 9021 | Celanese | HOSTAFORM | 8 | DOWNLOAD | Manufacturing automotive and E&E parts |
| C 2521 | Celanese | HOSTAFORM | 2.5 | DOWNLOAD | Making general – purpose mechanical parts |
| C 27021 | Celanese | HOSTAFORM | 24 | DOWNLOAD | Producing small consumer – electronics parts |
| C 13021 | Celanese | HOSTAFORM | 12 | DOWNLOAD | Fabricating industrial parts with medium strength |
| F20 – 02 | KEP Americas | KEPITAL | 9 | DOWNLOAD | |
| F20 – 03 | KEP Americas | KEPITAL | 9 | DOWNLOAD | General injection – molding applications |
| F30 – 03 | KEP Americas | KEPITAL | 28 | DOWNLOAD | Manufacturing thin – walled plastic parts |
| F40 – 03 | KEP Americas | KEPITAL | 52 | DOWNLOAD | Forming precision thin – walled components |
| K100 | Kolon | KOCETAL | 2.5 | DOWNLOAD | Extruding rods, pipes, and sheets |
| K300 | Kolon | KOCETAL | 9 | DOWNLOAD | Heat – resistant industrial parts |
| K500 | Kolon | KOCETAL | 14 | DOWNLOAD | Making general injection – molded products |
| K700 | Kolon | KOCETAL | 27 | DOWNLOAD | Long – term heat – use parts |
| K900 | Kolon | KOCETAL | 42 | DOWNLOAD | Forming thin and large – sized parts |
| N2320 0038 AT | BASF | Ultraform | 7.5 | DOWNLOAD | Injection – molding manufacturing |
| N2320 003 | BASF | Ultraform | 7.5 | DOWNLOAD | Smooth – operating gears systems |
| 4520 | Asahi Kasei | TENAC™ | 9 | DOWNLOAD | Mold – friendly injection parts |
| 4590 | Asahi Kasei | TENAC™ | 9 | DOWNLOAD | Drinking Water Parts |
| 3010 | Asahi Kasei | TENAC™ | 2.8 | DOWNLOAD | For high – impact & elongation – required parts |
| 3510 | Asahi Kasei | TENAC™ | 2.8 | DOWNLOAD | High – impact mechanical parts |
| 5010 | Asahi Kasei | TENAC™ | 22 | DOWNLOAD | General – purpose plastic parts |
| 5050 | Asahi Kasei | TENAC™ | 21 | DOWNLOAD | High – productivity molded parts |
| 4050 | Asahi Kasei | TENAC™ | 7 | DOWNLOAD | Making automotive and industrial parts |
| 9520 | Asahi Kasei | TENAC™ | 70 | DOWNLOAD | Molded Parts |
| Grade No. | Manufactuer | Brand | MFI g/10min | Properties | Application |
| M90 – 44 | Polyplastics | DURACON | 9 | DOWNLOAD | Manufacturing automotive and industrial components |
| M90 – 57 WK2001 | Polyplastics | DURACON | 9 | DOWNLOAD | Making parts for industrial conveyor systems |
| M25 – 44 | Polyplastics | DURACON | 2.2 | DOWNLOAD | Producing high – viscosity – required products |
| M25S | Polyplastics | DURACON | 2.5 | DOWNLOAD | Molding general – purpose plastic parts |
| M270 – 44 | Polyplastics | DURACON | 27 | DOWNLOAD | Forming thin – walled injection – molded parts |
| GB – 25 | Polyplastics | DURACON | N/A | DOWNLOAD | Making glass – filled plastic items |
| Grade No. | Manufactuer | Brand | MVR cm³/10 min (190°C/2.16kg) | Charpy Notched 23°C (kJ/m²) | Properties |
| N2320 003 | BASF | Ultraform | 7.5 | 7 | DOWNLOAD |
| S 2320 003 PRO | BASF | Ultraform | 11 | 5.5 | DOWNLOAD |
| S1320 003 PRO AT | BASF | Ultraform | 11 | 6 | DOWNLOAD |
| S2320 003 PRO TR AT | BASF | Ultraform | 11 | 5.5 | DOWNLOAD |
| W2320 003 PRO AT | BASF | Ultraform | 25 | 4.5 | DOWNLOAD |
| B4521 PRO | BASF | ULTRADUR | 20 | 3.5 | DOWNLOAD |
| B4521 PRO TR | BASF | ULTRADUR | 20 | N/A | DOWNLOAD |
BASF Ultraform POM refers to a range of Polyoxymethylene (POM) products manufactured by BASF, a major chemical company. View All
| Grade No. | Manufactuer | Brand | MFI g/10 min (190°C/2.16kg) | Izod Impact, Notched 23°C (kJ/m²) | Properties | APPLICATION |
| N2320 0035 LEV | BASF | Ultraform | 10.5 | 6.5 | DOWNLOAD | Injection molding |
| N2640 E2 | BASF | Ultraform | 6.8 | N/A | DOWNLOAD | Injection molding |
| N2640 E4 | BASF | Ultraform | 3.9 | N/A | DOWNLOAD | Injection molding |
| N2640 Z2 | BASF | Ultraform | 9.59 | N/A | DOWNLOAD | For clips, snap and fastening elements |
| N2644 Z9 | BASF | Ultraform | 15.24 | N/A | DOWNLOAD | Toy Manufacturing Field |
| N2650 Z6 | BASF | Ultraform | 9.31 | N/A | DOWNLOAD | Automotive Under – the – Hood Components |
| N2720 M63 | BASF | Ultraform | 6.27 | 3.5 | DOWNLOAD | Consumer Electronics Housings |
| N2720 M210 | BASF | Ultraform | 10.36 | N/A | DOWNLOAD | For sliding chains and conveyor systems |
| N2770 K | BASF | Ultraform | 10.65 | N/A | DOWNLOAD | Sliding elements |
| S1320 0021 UNC | BASF | Ultraform | 12.9 | 5.5 | DOWNLOAD | Injection molding of difficult |
| S2320 003 LEV AT | BASF | Ultraform | 11 | N/A | DOWNLOAD | Difficult, thin – walled parts |
| S2320 Aqua AT | BASF | Ultraform | 11 | 5.46 | DOWNLOAD | Food – contact packaging components |
| S1320 003 | BASF | Ultraform | 12.9 | 5.5 | DOWNLOAD | Automotive thin – wall parts |
| S2320 003 | BASF | Ultraform | 15.4 | N/A | DOWNLOAD | Injection molding of difficult, thin – walled parts |
| S2320 003 PRO | BASF | Ultraform | 13 | N/A | DOWNLOAD | Standard functional applications |
| S2320 0035 LEV | BASF | Ultraform | 15.4 | N/A | DOWNLOAD | Injection molding with reduced emission potential |
| W2320 003 LEV AT | BASF | Ultraform | 25 | N/A | DOWNLOAD | Difficult, thin – walled parts |
| W2320 Aqua AT | BASF | Ultraform | 25 | 5.04 | DOWNLOAD | Water – contact medical devices |
| W2320 003 PRO | BASF | Ultraform | 35 | 5 | DOWNLOAD | Thin – walled components with long flow paths |
| W2320 0035 LEV | BASF | Ultraform | 30 | N/A | DOWNLOAD | Injection molding with reduced emission potential |
| W2320 U035 LEV | BASF | Ultraform | 35 | N/A | DOWNLOAD | Injection molding with reduced emission potential |
| Z2320 003 | BASF | Ultraform | 58.8 | N/A | DOWNLOAD | Applications with exceptional demands on flowability |
| H2320 006 Q600 | BASF | Ultraform | 2.9 | N/A | DOWNLOAD | Injection molding of thick – walled moldings |
| H4320 Q600 | BASF | Ultraform | 26 | 6.5 | DOWNLOAD | Extrusion of thick – walled semi – finished products |
| H2320 004 | BASF | Ultraform | 3.08 | 6.5 | DOWNLOAD | Extrusion of small thin – walled pipes and panel |
| N2310P Q600 | BASF | Ultraform | 7.5 | N/A | DOWNLOAD | General – purpose injection molding |
| N2320 Aqua AT | BASF | Ultraform | 7.5 | 6 | DOWNLOAD | Plastic components in contact with drinking water |
| N2320 U03 UNC Q600 | BASF | Ultraform | 7.5 | 6.5 | DOWNLOAD | General – purpose injection molding |
| N2320 U035 LEV AT | BASF | Ultraform | 7.5 | 6.5 | DOWNLOAD | irrigation systems and windshield wiper clips |
| N2640 Z4 BK140 Q600 | BASF | Ultraform | 5.5 | 11.7 | DOWNLOAD | Injection molding |
| N2200 G43 | BASF | Ultraform | 6.622 | 5 | DOWNLOAD | Automotive interior component production |
| N2200 G53 UNC Q600 | BASF | Ultraform | 5.5 | 9 | DOWNLOAD | Parts requiring high stiffness and toughness |
| Grade No. | Manufactuer | Brand | MVR cm³/10 min (190°C/2.16kg) | CHARPY NOTCHED 23°C (kJ/m²) | Properties |
| M25 | CELANESE | CELCON | 2.2 | 9.1 | DOWNLOAD |
| M90 | CELANESE | CELCON | 8 | 6 | DOWNLOAD |
| M140 | CELANESE | CELCON | 12 | 6 | DOWNLOAD |
| M270™ | CELANESE | CELCON | 24 | 6.5 | DOWNLOAD |
| M15HP | CELANESE | CELCON | 1.3 | 5.5 | DOWNLOAD |
| M10AE | CELANESE | CELCON | 0.9 | N/A | DOWNLOAD |
| M25AE | CELANESE | CELCON | 2.5 | N/A | DOWNLOAD |
| M30AE | CELANESE | CELCON | 2.8 | N/A | DOWNLOAD |
| M90UV | CELANESE | CELCON | 8 | N/A | DOWNLOAD |
| M270UV | CELANESE | CELCON | 23 | N/A | DOWNLOAD |
| M25XAP | CELANESE | CELCON | 2.2 | N/A | DOWNLOAD |
| M90XAP | CELANESE | CELCON | 8 | N/A | DOWNLOAD |
| M25UV | CELANESE | CELCON | 2.2 | N/A | DOWNLOAD |
Celanese offers Hostaform® POM (Polyoxymethylene) in various grades, including both standard and modified versions. View All
| Grade No. | Manufactuer | Brand | MVR cm³/10 min (190°C/2.16kg) | CHARPY NOTCHED 23°C (kJ/m²) | Properties |
| C 2521 | CELANESE | HOSTAFORM | 2.5 | 8.5 | DOWNLOAD |
| C 9021 | CELANESE | HOSTAFORM | 8 | 6.5 | DOWNLOAD |
| C 13021 | CELANESE | HOSTAFORM | 12 | 6 | DOWNLOAD |
| C 27021 | CELANESE | HOSTAFORM | 24 | 6.5 | DOWNLOAD |
| C 36021 | CELANESE | HOSTAFORM | 32 | N/A | DOWNLOAD |
| C 13031 | CELANESE | HOSTAFORM | 12 | 6.7 | DOWNLOAD |
Hostaform® modified POM grades are tailored to deliver enhanced properties such as low friction, wear resistance, and impact modification. View All
| Grade No. | Manufactuer | Brand | MVR cm³/10 min (190°C/2.16kg) | CHARPY NOTCHED 23°C (kJ/m²) | Properties |
| C 9021 GV1/10 | CELANESE | HOSTAFORM | N/A | 8 | DOWNLOAD |
| C 9021 GV1/20 | CELANESE | HOSTAFORM | N/A | 8 | DOWNLOAD |
| C 9021 GV1/30 | CELANESE | HOSTAFORM | N/A | 6.4 | DOWNLOAD |
| C 9021 GV3/10 | CELANESE | HOSTAFORM | 9 | 4 | DOWNLOAD |
| C 9021 GV3/20 | CELANESE | HOSTAFORM | 8.5 | 3.5 | DOWNLOAD |
| C 9021 GV3/30 | CELANESE | HOSTAFORM | 7.5 | 3 | DOWNLOAD |
| C 9021 K | CELANESE | HOSTAFORM | 7.5 | 5 | DOWNLOAD |
| C 9021 AW | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 9021 SW | CELANESE | HOSTAFORM | 6.5 | 4 | DOWNLOAD |
| C 9021 G | CELANESE | HOSTAFORM | 5.5 | 3.5 | DOWNLOAD |
| C 13021 RM | CELANESE | HOSTAFORM | 12.5 | 6.5 | DOWNLOAD |
| C 9021 LM | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 9021 LMZ | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 9021 LS | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 27021 LS | CELANESE | HOSTAFORM | 24 | 6.5 | DOWNLOAD |
| C 9021 TF | CELANESE | HOSTAFORM | 6 | 4 | DOWNLOAD |
| C 9021 TF5 | CELANESE | HOSTAFORM | 8.5 | 6 | DOWNLOAD |
| C 27021 TF | CELANESE | HOSTAFORM | N/A | 4 | DOWNLOAD |
| C 27021 TF5 | CELANESE | HOSTAFORM | N/A | 6 | DOWNLOAD |
| C 2521 G | CELANESE | HOSTAFORM | N/A | 5 | DOWNLOAD |
| C 9021 M | CELANESE | HOSTAFORM | 8.5 | 6 | DOWNLOAD |
| C 13031 K | CELANESE | HOSTAFORM | N/A | 5 | DOWNLOAD |
| C 9021 FCT1 | CELANESE | HOSTAFORM | N/A | 7 | DOWNLOAD |
| C 9021 SOEK | CELANESE | HOSTAFORM | N/A | 5.3 | DOWNLOAD |
| C 9021 GV1/20 XGM | CELANESE | HOSTAFORM | N/A | 5.5 | DOWNLOAD |
| C 9021 GV1/30 GT | CELANESE | HOSTAFORM | N/A | 4.8 | DOWNLOAD |
| C 9021 LS 10/1570 | CELANESE | HOSTAFORM | 8.5 | 6.5 | DOWNLOAD |
| C 2521 XAP | CELANESE | HOSTAFORM | 2.5 | N/A | DOWNLOAD |
| C 9021 XAP2 | CELANESE | HOSTAFORM | 8 | N/A | DOWNLOAD |
| C 13021 XAP2 | CELANESE | HOSTAFORM | 12 | N/A | DOWNLOAD |
| C 27021 XAP2 | CELANESE | HOSTAFORM | 24 | N/A | DOWNLOAD |
| C 9021 AW XAP2 LS | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| C 9021 SW XAP2 | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| C 9021 TF XAP2 | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| C 9021 M XAP2 | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| SLIDEX 0313 XAP² | CELANESE | HOSTAFORM | 13 | 4 | DOWNLOAD |
| SLIDEX 0304 XAP² | CELANESE | HOSTAFORM | 26 | 3.5 | DOWNLOAD |
| C 9021 LX90 | CELANESE | HOSTAFORM | 8 | N/A | DOWNLOAD |
| C 9021 LX90Z | CELANESE | HOSTAFORM | 8 | N/A | DOWNLOAD |
| C 9021 LX90GC15 | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| C 9021 UV25Z | CELANESE | HOSTAFORM | 2.2 | N/A | DOWNLOAD |
| C 9021 UV90Z | CELANESE | HOSTAFORM | 8 | N/A | DOWNLOAD |
| C 9021 UV270Z | CELANESE | HOSTAFORM | 23 | N/A | DOWNLOAD |
| C 9021 SXT90Z-01 | CELANESE | HOSTAFORM | 7 | N/A | DOWNLOAD |
| C 9021 SXT90Z-02 | CELANESE | HOSTAFORM | 4 | N/A | DOWNLOAD |
| C 9021 WR90Z | CELANESE | HOSTAFORM | 8 | N/A | DOWNLOAD |
| C 9021 MT2U01 | CELANESE | HOSTAFORM | 2.2 | 8.5 | DOWNLOAD |
| C 9021 MT8U01 | CELANESE | HOSTAFORM | 8 | 6.5 | DOWNLOAD |
| C 9021 MT8U05 | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 9021 MT12U01 | CELANESE | HOSTAFORM | 12 | 6 | DOWNLOAD |
| C 9021 MT12U03 | CELANESE | HOSTAFORM | 12 | 5.5 | DOWNLOAD |
| C 9021 MT24U01 | CELANESE | HOSTAFORM | 24 | 5.2 | DOWNLOAD |
| C 9021 MT8F01 | CELANESE | HOSTAFORM | 8.5 | N/A | DOWNLOAD |
| C 9021 MT8F02 | CELANESE | HOSTAFORM | 6 | N/A | DOWNLOAD |
| C 9021 MT24F01 | CELANESE | HOSTAFORM | 21 | N/A | DOWNLOAD |
| C 9021 MT8R02 | CELANESE | HOSTAFORM | 8.5 | N/A | DOWNLOAD |
| C 9021 MT12R01 | CELANESE | HOSTAFORM | 12 | N/A | DOWNLOAD |
| C 9021 MTSLIDEX1203 | CELANESE | HOSTAFORM | 13 | N/A | DOWNLOAD |
| C 9021 MTSLIDEX2404 | CELANESE | HOSTAFORM | 25 | N/A | DOWNLOAD |
| C 13031 XF | CELANESE | HOSTAFORM | 12 | 8 | DOWNLOAD |
| C 9021 EC140XF | CELANESE | HOSTAFORM | 4 | 4.5 | DOWNLOAD |
| C 13031 XF 50/5339 | CELANESE | HOSTAFORM | N/A | N/A | DOWNLOAD |
| C 27021 AS | CELANESE | HOSTAFORM | 25 | 6.5 | DOWNLOAD |
| C 9021 MR90B | CELANESE | HOSTAFORM | 8 | 6 | DOWNLOAD |
| C 13031 MR130ACS | CELANESE | HOSTAFORM | 12 | N/A | DOWNLOAD |
DuPont Delrin® POM refers to a family of Polyoxymethylene (POM) products manufactured by DuPont. View All
| Grade No. | Manufactuer | Brand | MFI g/10 min(190°C/2.16kg) | IZOD IMPACT 23°(kJ/m²) | Properties | Application |
| 100P | DUPONT | DELRIN | 2.1 | 14 | DOWNLOAD | High performance engineering parts, e.g., gears,conveyors |
| 111P | DUPONT | DELRIN | 2.4 | 11 | DOWNLOAD | High performance engineering parts, e.g., gears,fasteners; |
| 500P | DUPONT | DELRIN | 13 | 9 | DOWNLOAD | General mechanical parts, automotive fuel systems |
| 511P | DUPONT | DELRIN | 15 | 8 | DOWNLOAD | General mechanical parts, snap-fits, fasteners, gears; |
| 900P | DUPONT | DELRIN | 21 | 7 | DOWNLOAD | Automotive parts production |
| 911P | DUPONT | DELRIN | 21 | 8 | DOWNLOAD | plus fuel system components |
| 1700P | DUPONT | DELRIN | 17 | N/A | DOWNLOAD | Parts with complex shapes, thin walls, long flow paths |
| 127UV | DUPONT | DELRIN | 1.9 | 13 | DOWNLOAD | seatbelt restraint parts |
| 527UV | DUPONT | DELRIN | 13 | 8 | DOWNLOAD | seatbelt restraint parts |
| 927UV | DUPONT | DELRIN | 25 | N/A | DOWNLOAD | Automotive interior parts; loudspeaker grilles |
| 1727UV | DUPONT | DELRIN | 37 | N/A | DOWNLOAD | Automotive interior parts; loudspeaker grilles |
| 500AF | DUPONT | DELRIN | 5 | 3 | DOWNLOAD | Specialty friction and wear applications, conveyor systems |
| 520MP | DUPONT | DELRIN | 8 | 4 | DOWNLOAD | Specialty friction and wear applications |
| 510MP | DUPONT | DELRIN | 5 | N/A | DOWNLOAD | Specialty friction and wear applications |
| 500TL | DUPONT | DELRIN | 12 | 6 | DOWNLOAD | Specialty friction and wear applications, conveyor systems |
| 900SP | DUPONT | DELRIN | 23 | 6 | DOWNLOAD | Gears, drive trains, sliding devices |
| 100KM | DUPONT | DELRIN | 1.7 | N/A | DOWNLOAD | Specialty friction and wear applications |
| 570NC | DUPONT | DELRIN | N/A | 6 | DOWNLOAD | General engineering parts for high stiffness |
| 510GR | DUPONT | DELRIN | 12 | 5 | DOWNLOAD | Parts requiring high stiffness and strength |
| 525GR | DUPONT | DELRIN | 8 | 1 | DOWNLOAD | Parts requiring very high stiffness and strength |
| 100ST | DUPONT | DELRIN | 1.7 | 90 | DOWNLOAD | Fasteners, lock systems |
| 500MT | DUPONT | DELRIN | 9 | 16 | DOWNLOAD | Fasteners, gears |
| 500T | DUPONT | DELRIN | 10 | 14 | DOWNLOAD | Fasteners, gears |
We're here to meet all your POM resin needs
Polyoxymethylene resin FAQs
What is the melting point of POM?
The melting point of POM homopolymer is around 175°C (347°F), while copolymer grades melt slightly lower, around 165°C (329°F).
What are the key properties of POM?
POM offers:
High mechanical strength
Low moisture absorption (<0.2%)
High stiffness and hardness
Good chemical resistance
Low coefficient of friction (~0.2)
These properties make it ideal for precision parts and moving components.
Is POM plastic strong?
Yes. POM has a tensile strength of around 60–70 MPa, and its rigidity and fatigue resistance are among the highest of all thermoplastics.
What are common applications of POM?
POM is widely used in gears, bearings, bushings, valves, lock systems, and automotive parts due to its wear resistance and dimensional accuracy.
How does POM handle moisture?
POM has very low water absorption, typically less than 0.2% after 24 hours at 23°C, which helps maintain dimensional stability in humid environments.
Why is POM often used for gears and moving parts?
POM has a naturally low coefficient of friction (about 0.2), which helps parts slide smoothly against each other without needing lubrication. Combined with high wear resistance and dimensional stability, it’s a top choice for precision gears, bearings, and sliding mechanisms.
Why is POM often used for gears and moving parts?
POM has a naturally low coefficient of friction (about 0.2), which helps parts slide smoothly against each other without needing lubrication. Combined with high wear resistance and dimensional stability, it’s a top choice for precision gears, bearings, and sliding mechanisms.
Can POM maintain shape in humid or wet environments?
Yes, POM absorbs very little water (less than 0.2% after 24 hours), which means it doesn’t swell or warp easily. This makes it ideal for use in water-handling parts like faucets, pumps, and dishwasher components.
Why do some POM parts discolor or crack outdoors?
Standard POM is sensitive to UV light. Without UV stabilization, long-term sunlight exposure can cause yellowing, surface cracks, or loss of strength. For outdoor use, UV-stabilized or black-pigmented grades are more durable.
What’s the difference between POM homopolymer and copolymer?
Homopolymer POM (like Delrin®) offers slightly higher strength and stiffness, while copolymer POM has better resistance to hot water and lower risk of centerline porosity in thick parts. The choice depends on application needs.
Can POM be welded or glued?
POM is difficult to bond with adhesives due to its low surface energy. For joining, techniques like ultrasonic welding or mechanical fastening are more commonly used.