<img height="1" width="1" style="display:none;" src="https://www.facebook.com/tr?id=350476566337084&amp;ev=PageView&amp;noscript=1">

Bearing Materials

TriStar offers a wide range of bearing materials that are ideal for non-lubricated, high-load applications.

Saint Gobain Materials

TriStar is the exclusive partner of Saint Gobain for Rulon materials in North America. 

Materials and Fabrication

Our capabilities include component design, material selection, prototype, production, and manufacturing.

Materials Database

Use our interactive database to search for and compare over 450 materials.


Surface Modification

Learn how our Enhanced Materials Divison (EMD) modifies existing materials to meet specific needs.



Since 1982 we have been combining the skills of TriStar’s engineering team, our extensive product line, and our deep understanding of a broad range of industries to bring you solutions to your most challenging engineering needs.

Problems / Solutions

Explore the common causes of bearing failure and learn how advanced polymer and composite bearings can address them.

Application Case Studies

Enhanced Materials Division (EMD)

EMD  positions TriStar Plastics as the leading resource to solve your demanding engineering material challenges.

Enhanced Materials Division (EMD)


View our library of engineering worksheets — the quickest way to communicate your project specs — or reach out to our engineering team.


Here are a few of our most popular online engineering tools - including our PV calc and material database (450+ materials).


Learn about our quality program and view our current ISO cert.


Technical Library

Our collection of case studies, product specs, brochures and other key technical documents.

Free White Papers

Our library of free-to-download white papers focus on industry-based solutions, specific materials, bearing design, and more...

All White Papers

Deep Dives

These pillar pages provide in-depth information on bearings and problem/solutions for specific industires.

All Pillar Pages

More Resources

Our popular resources, including our monthly newsletters, blog, and our video library.

Education Overview

About Us

TriStar Plastics Corp. provides engineering, custom fabrication and manufacturing of high-performance plastics and self-lubricating bearing materials. 


We're dedicated to building a company where opportunities exist for talented people to achieve their maximum potential.

Let's Go Paperless...

To save time, paper & postage please sign up for paperless invoicing and payments.

Contact Us

Go here to request a quote or for general questions (document requests, billing inquiries, etc.).


Ask the Expert

Have a material or application question for our engineering team? Want to send us a file for review? Go here.


Let's Go Paperless

In an effort to save time, paper and postage please sign up for our paperless invoicing and payments.


Volume 19 - Issue 1
Special PEEK Rotor Insert Eliminates Failure in Chemical Pump

Special PEEK Rotor Insert Eliminates Failure in Chemical Pump


One of the trickiest engineering challenges that we face here at TriStar is sourcing plastic components that work effectively and reliably in environments where the equipment is exposed to caustic chemicals. A major chemical processor came to us with an issue where exposure to acids was resulting in premature failure of pump rotors.

A Clever Design That Didn’t Always Work as Expected

PEEK rotary pump insert

In this case, the system was a processing pump that uses a rotor system to produce flow.

As initially designed, the rotor relies on the acids being processed to produce a hydrodynamic lubricating film across the faceplates. This looked great on paper, but in actual use, engineers found that this system still left open the opportunity for metal on metal contact.

The operating environment of this particular pump was in sulfuric and acetic acid at 120°F against 316L stainless steel. After studying the pumps while in use, TriStar engineers felt the best option was to isolate the rotor from the case by using polymer inserts in the rotor face.

Additionally, our engineers had to develop a good method for mounting these inserts and settled on a special adhesive resistant to acid along with mechanical fastening.

Bearing Grade PEEK Delivered Performance and Reliability Along with Excellent Chemical Resistance

A special bearing grade PEEK was selected that can withstand the chemical exposure and operating temperature and is dimensionally stable (as there are tight tolerances on the inserts). It also offers low friction if there is a loss of fluid film as well as excellent wear life.

Because it is easily machined and fabricated yet extremely strong, PEEK is often specified for extremely high demand applications, including in aerospace, oil and gas and medical implant use, where its biocompatibility is a key benefit.

Reports back from the customer show that the design is giving them longer wear life on the rotor and body and they have now approved our design for pump rebuilds throughout the plant.

Tristar Plastics Is Your Source for High Performance Plastics and Composites

Before you go, be sure to check out our brand new company introduction video (bottom left box). It's a 2 minute overview of the products and services we offer. If there's anything we can do to help you bring your engineering projects to fruition, please don't hesitate to reach out.

Do you have a question for our experts?
Featured Blog Post

Bearing Design White Paper

Our 8 pg. Capabilities Brochure