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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. 

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

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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.

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Enhanced Materials Division (EMD)

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

Enhanced Materials Division (EMD)


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About Us

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


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Meldin® 7211 | 10% PTFE & 15% Graphite Filler

Meldin® 7211


Meldin® 7211 has 10% PTFE and 15% graphite filler, which provides the lowest coefficient of friction of the 7000 series polyimides.

this material is an excellent high-temperature, high PV bearing material in dry service.

Above 300°F we recommend using Meldin® 7021 instead, which has a very similar coefficient of friction to 7211 with a lower wear factor at those temperatures.


Need More Info about Meldin® 7211?

Ask a Question or Request a Quote


Thermoset Polyimide with 10%  PTFE  and 15% Graphite Fillers




Lowest coefficient of firction of any Meldin® 7000 series grade

Working Temperature Range -112°F to +600°F [-80°C to +315°C]
Manufacturing Methods Isostatic molded
Direct formed
Compression molded
Shape Availability Rod (up to 37")
Sheet (12"x12")
Finished parts
Tubes, discs, blocks

Agency Approvals

Meets ASTM D6456-99 Type 2, Class 3
Meets AMS3644 Class 4
Meets Mil-R-46198 Type 2, Class 3 (superceeded)
Meets Honeywell MCS5016 Type 2, Class 3
Meets Rolls Royce MSRR9205
Replaces Vespel® SP-211

Vespel is a Registered Trademark of DuPont Polymers, Inc.