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Engineering

We strive to be your plastic engineering partner from education to material selection, thru component design.

Custom Fabrication

TriStar excels in custom plastic fabrication from Prototype to Production.

Featured Products
CJ Bearings TriSteel™ Ultracomp® Rulon® Bearings Rulon® Materials Meldin®
Manufacturing

We manufacture a wide range of bearing materials that are ideal for non-lubricated high-load applications.

High Performance Plastics

We have quality High Performance Plastic materials available for the most demanding applications.

Saint-Gobain

TriStar is the exclusive partner for the Rulon, Meldin and Fluoroloy product lines in North America with the largest global inventory for immediate shipment.

Enhanced Materials

Cutting-edge enhancements that improve and extend the performance of polymers, elastomers, and specialized membranes.

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Material Database

With hundreds of high-performance bearing materials to choose from, utilize our material database to filter your search for the exact match for your application.

Technical Library

Our technical library is a knowledge database from application data sheets, brochures to engineering worksheets to research and start your next project.

Tech Talk Blog

A series of quick reads on the best materials for the most demanding applications in your industry.

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Explore our library of FREE white papers which dive into composite bearings, plastics, and industries where high-performance materials make a significant impact.

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A monthly technical brief highlighting the latest in bearing material technology. Sign up for auto delivery.

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We have produced over 100 educational videos ranging from bearing design, bonding plastics surface modification and many more topics.

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About Us

TriStar Plastics Corp. provides engineering, custom fabrication and manufacturing of high-performance plastics and self-lubricating bearings materials. The Company’s capabilities include component design, material selection, prototype, production, manufacturing, and surface modification.

Locations

The Company’s principal location is in Shrewsbury, Massachusetts, with additional sales and distribution centers in Denver, North Carolina, Yorba Linda, California and Hoffman Estates, Illinois. Click here for details and directions.

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Meldin® 7021 | 15% Graphite Filler

Meldin® 7021

Meldin® 7021 features a 15% (by weight) graphite self-lubricating filler encaspulated by the base polyimide resin.

This material has a low coefficient of friction and high heat resistance, making it an excellent choice for high temperature bearings, seals, thrust washers and other low-wear applications.

Meldin® 7021 provides consistent mechanical and performance properties for aircraft airframe systems such as landing gear and fuselage components, as well as jet engine parts such as pads, bumpers, washers, seals, and bearings.

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Description

Thermoset Polyimide with 15% by Weight Graphite Filler

Color

Black

Benefits

Best for service in vacuum and in extreme dry conditions
Working Temperature Range -423°F to +600°F [-253°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 1
Meets AMS3644 class 2
Meets Mil-R-46198 Type 2, Class 1(superceeded)
Meets Honeywell MCS5016 Type 2, Class 1
Meets Rolls Royce MSRR9206
Replaces Vespel® SP-21

Vespel is a Registered Trademark of DuPont Polymers, Inc.