<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 21 - Issue 3
Rulon® 1439 Bearings Keep Hummus on the Table

Rulon® 1439 Bearings Keep Hummus on the Table


TriStar was contacted by a major producer of hummus to discuss a problem they were having with the operating life of the steady bearings in their grinders and mixers. Hummus paste is quite aggressive in terms of wearing out components – in this case a PTFE steady bearing supporting the mixing paddle shafts – so our customer asked us if we could address this.

First a Hummus Primer!

Rulon® 1439

Hummus has been around for a very long time and is one of the most popular snack products in the world. It is made from chickpeas (a legume) and is referenced in Egyptian cookbooks from the 13th century. The process today is far more automated than it was back then, but it’s still quite simple.

The chickpeas are soaked in hot water to soften the thin shell. They then go into a peeler which gently wipes the shell away without damaging the “meat.” From there they go through a grinder to pulverize the meat into a paste, then to a mixer where additives are blended in for taste and preservation. Finally, they are degassed to remove any air in the paste and then it is off for packaging.

Virgin PTFE Worked to a Point but Ultimately was Ill Suited to this Application

Our customer was using virgin PTFE for the paddle shaft bearings. This material looks great on paper; it meets the FDA compliance requirement, is a good fit for the temperature range of the process, and is compatible with the soft stainless shafts, but virgin PTFE is a lousy bearing – especially in a wetted, abrasive environment. As a result, our customer was replacing the bearings routinely every 2-3 weeks. And while the cost of the bearings themselves was reasonable, the increased downtime from the excessively short maintenance intervals was becoming a real headache.

Enter Rulon 1439 – An FDA Compliant Material Engineered for Submerged Applications

TriStar engineering has seen similar situations in the past and we have several solutions in our product line to address even this unusual combination of abrasive and wet. After reviewing the parameters of temperature, speeds, loads, service times and hardware, we recommended Rulon 1439 as a solid option.

Rulon 1439 is FDA compliant, works very well against stainless steel hardware, has an operating temperature range of -400 to +550°F, can handle CIP (Cleaning in Place) solutions without issues, and easily met the speed and load requirements of the application. All this and it is easily able to withstand the abrasiveness of the chickpea/hummus product.

To prove that Rulon 1439 was worth the higher upfront cost, the customer decided to put some bearings into service and let them run for 3 months. They then removed those bearings and found very little wear. Next, they put these same bearings back into service for yet another 3 months and at the end of that test they were still at an acceptable tolerance to keep running.

From 3 weeks with PTFE to 6 months with Rulon… Success!

This is a perfect case for not letting a higher upfront cost scare you away. The customer ultimately saved thousands of dollars in downtime and maintenance – and the bearing was no longer a problem they had to worry about. If you have a bearing or material related challenge you need help with, we encourage you to reach out to our engineering team for some creative problem solving.

Important Processes fo Food Processing and Packaging
Food and Beverage Industry White Paper
On-Demand Educational Webinars
Reach out to our engineering team