Polymethyl Methacrylate (PMMA / Acrylic) and Polytetrafluoroethylene (PTFE) are the two most quoted options for plastic rods and bars in electronics and electrical projects. Both are widely available, but they behave very differently once they are in service.
Use it as a working checklist when you write your next enquiry.
This category covers a family of products rather than a single item. In practice a buyer defines plastic rods and bars by three things: the base resin, the format or dimension, and the performance or certification level it has to meet. Typical options in this category include ground tolerance h9; round, square and hex profiles; diameter 6 mm to 500 mm. Materials most often specified are Polypropylene, Polytetrafluoroethylene, Polymethyl Methacrylate, UHMWPE, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.
In the electronics and electrical sector the decision is usually driven by flame retardancy and dimensional stability, with EMI control as a secondary requirement. Typical end uses include connectors, device housings, battery holders.
These figures are typical for commercial grades and should be confirmed against the supplier's certificate for your specific lot.
| Material | Density | Tensile strength | Service temperature |
|---|---|---|---|
| Polyamide | 1.13-1.15 g/cm³ | 60-85 MPa | -40°C to 120°C |
| Polyvinyl Chloride | 1.38-1.45 g/cm³ | 40-55 MPa | -10°C to 60°C |
| Polycarbonate | 1.20 g/cm³ | 55-70 MPa | -40°C to 120°C |
Polymethyl Methacrylate is frequently the default selection here: Cast acrylic machines cleanly and keeps its clarity outdoors for a decade or more.
Polymethyl Methacrylate grades offer up to 92% light transmission, while Polytetrafluoroethylene brings almost universal chemical inertness. For electronics and electrical service the difference shows up in creep and in the long term behaviour under load.
The practical decision usually comes down to the service environment: temperature, chemical exposure and expected lifetime.
Beyond the base resin, most suppliers offer UV stabilised, food contact, flame retardant, anti-static and recycled content versions of the same product. Ask which additive package is included, because it is often the difference between a part that lasts three years and one that lasts ten.
The route below is the one most factories use for this type of part.
Secondary operations such as printing, welding, machining and assembly are often cheaper to do in the same factory, and they reduce the risk of mismatch between components.
These are the criteria that actually predict whether the part will perform in service.
Send this list to your supplier with the drawing and you will receive comparable quotations from every factory you contact.
For standard sizes and colours the minimum is usually one pallet or one production run; for custom tooling the economic minimum depends on the tooling cost amortised over the expected volume. Send us your annual volume and we will calculate the break even point.
Yes. {mat1} is one of our regular materials for this item, and we can supply virgin, modified and certified grades with full traceability. Material certificates and test reports are issued per batch.
Colour is controlled with a masterbatch reference approved by the customer, and every production lot is checked against the approved sample under standard lighting before shipment.
Standard production tolerance follows the relevant ISO or DIN tolerance class for the process; tighter tolerances are possible after machining or grinding, but they add cost. Define the tolerance only on the functional dimensions.
A new tool typically takes 25 to 45 days depending on cavity count and complexity, followed by T1 samples within one week. Existing tools can usually start production within 10 to 15 days of order confirmation.
Our team supplies plastic rods and bars to electronics and electrical customers worldwide, with samples, material certificates and full inspection reports available before mass production.
Rubber & Plastics © 2026 All Rights Reserved. Yingnet.com — Global B2B trade platform for rubber & plastics manufacturers.
About Us | Contact Us | Help Center | Sitemap