Acetal and Delrin Rod and Sheet
American Made Delrin and Acetal Sheet and rod
Delrin®, Co-Polymer, Homo-polymer, Celcon®, BASF
All Are P.O.M. (PolyOxyMethylene)
*Why use Acetal or Delrin Rod or Sheet:
- Both materials are FDA Compliant
- Both have good mechanical properties
- Both are very stiff and have excellent dimensional stability
- Are self lubricating, Excellent Wear and Abrasion Resistance
- Cuts extremely well with standard cutting tools
- Delrin® AF (PTFE Filled), Glass Filled and Specialty Grades Available
This materials is…
an excellent machining material – a favorite of machinists. Works like a soft brass, and has exceptional dimensional stability.
- Excellent Machining
- Low co-efficient of Friction
- Dimensionally stable
- Very low moisture resistance
Acetal and Delrin Rod and Sheet is used frequently in a self lubricating bearing surface or slide type applications. Extremely low water absorption makes this a perfect material for valves, seats and moving parts in water filled areas (most white parts in toilet tanks are this material). Crisp machining and tight tolerances are easily obtainable with these materials. The work horse of the mechanical plastics family, it is one of the most popular grades of material we supply. Other brand or trade names: Pomalux®, Acetron®, Ensital®, Unital®, Tecaform®, Ultraform®, Celcon®, BASF, Hostaform®, Ticona, and Dupont Delrin®.
Some reasons to choose Homopolymer vs. Copolymer
Both POM grades have very similar properties. Our clients seem to prefer the Acetal over the Homopolymer materials due to the inherent center-line porosity in the Delrin® Homo-polymer version. This means, that along the center of a rod, or the middle of a sheet, there is a band, of area of tiny porous material. This can weaken or cause problems with a finished part. Read more on this in data sheets. While Delrin® is a brand name, it is a POM Homo-polymer. The most requested and popular item we supply is the Acetal; the POM Co-polymer resin made by one of the other big resin manufacturers – like BASF or Celanese/Tacona.
The Delrin® brand and the common Co-Polymer resins are both readily available. On this website, we price and supply the more popular Co-Polymer by client request. If you would prefer to get your hands on the Delrin® brand product, drop us a line, send us an email – we will be happy to ship the requested material for you. We don’t make judgments on suitability of material for your application, we just supply what you, our clients ask for. Please just let us know ahead of time.
 Machining Guidelines |  Chemical Resistant Chart |
Applications – Frequently used in:
- Wear and Slide machined parts
- FDA, NSF, 3-A, and USDA Compliant Machined Parts
- Easily machined parts for water / moisture environments
- Critical tolerance and dimensionally stable parts
- 185ºF Continuous Temperature Environments
- Custom formulations, Teflon Filled for wear resistance
Materials Available As
Acetal – Delrin Sheet:
.062″ – 6.0″ up to 48″ X 120″ in Natural (White) and Black
Delrin AF Sheet:
.062″ – 3.0″ thick in 24″ X 48″, brown in color
Film:
.005″ – .062″ up to 24″ wide in Natural (White) and Black (minimums may apply)
Acetal – Delrin Rod:
.125″ – 10″ diameter in Natural (White) and Black up to 120″ lengths
Special Formulations:
Conductive, Static Dissipative, Teflon Filled, Glass Reinforced, Custom Sizes, Formulations, or Colors
Typical Resin Properties:
| General Property | ASTM Test | Typical Value Unfilled Delrin® Homo-Polymer | Typical Value Unfilled Co-Polymer | Typical Value Delrin® AF |
| Specific Gravity | D792 | 1.42 | 1.40 | 1.50 |
| Tensile Strength Yield | D638 | 9,600 -11,000 | 9,000 -10,200 | 7,600 |
| Tensile Modulus | D638 | 450,000 | 400,000 | 400,000 |
| Izod Impact – Notched | D256 | 1.2 | 1.0 | 0.9 |
| Hardness – Rockwell | D785 | M94 | M90 | M89 |
| Deflection Temp @ 264psi | D648 | 257 | 220 | 260 |
| Deflection Temp @ 66 psi | D648 | 347 | 335 | 347 |
| Co. Thermal Expansion | D696 | 6.83X10-5 | 5.4X10-5 | 5.0X10-5 |
 Data Sheet |  Typical MSDS Sheet |
| Machining Guidelines | Chemical Resistant Chart |
These Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed or implied.
For excellent machinablilty, stiffness, and FDA compliance, Acetal / Delrin® are both an excellent choice.
Get Delrin Sheet and Rod pricing here