What Is Torlon® PAI (Polyamidimide)

Torlon® polyamide-imide is recognized as the highest performance thermoplastic that is still melt processible. Torlon can be extruded into shapes and injection molded into custom geometries.

Depending on the grade, Torlon PAI offers a heat deflection temperature of up to 539°F (282°C), and affords unparalleled strength at high temperatures. Is has been used in many applications with continuous exposure to 500°F (260°C) for extended periods and is stronger at 400°F (204°C) than other engineering resins at room temperature. Torlon PAI is also tougher and more impact resistant at cryogenic temperatures than other high strength polymers.

Torlon® has many Aerospace, Automotive, Electrical, Oil & Gas, Pump, Valve & Compressor, and Semiconductor Industries applications. Typical applications include structural components, electrical connector housings, test sockets, non-lubricating bearings, seals, valves, compressors, piston parts, bearing cages, bushings, and thrust washers

Torlon® PAI Comparison of Select Grades

Torlon® 4200 Non-reinforced PAI

Gears, rollers, plasma chamber hardware, wafer contact fixtures.

Torlon® 4203 Non-reinforced PAI

Electrical insulators, thermal isolators, valve seats seals, cams, gears, poppets and ball bearings.

Torlon® 5060 60% Glass Fiber reinforced PAI

Electrical insulators, burn-in/test sockets, valve seats, fasteners and activation balls.

Torlon® 5030 30% Glass Fiber reinforced PAI

High-temperature thermal/electrical insulators, burn-in/test sockets, valve seats, fasteners and activation balls.

Torlon® 7130 30% Carbon Fiber reinforced PAI

Mechanical linkages, rollers, labyrinth seals, impellors, valve plates, vanes, back-up seal rings.

Wear Resistant Grades

Torlon® 4301 General purpose bearing grade

12% Graphite, 3% PTFE

High load Bearings, thrust washers, wear pads, seals, bushings, valve seats.

Torlon® 4275 High speed bearing & wear applications

Higher Speed Bearings & Bushings, Bearing Cages, Piston Rings.

Torlon® 4435 High modulus sliding wear

Sliding Vanes, thrust washers and bobbins, piston seal rings.

Parts machined from Torlon® stock shapes provide greater compressive strength and higher impact resistance than most advanced engineering plastics. Its extremely low coefficient of linear thermal expansion and high creep resistance deliver excellent dimensional stability over its entire use range. Torlon ® is an amorphous material with a Tg (glass transition temperature) of 537°F (280°C).

Maintains strength and stiffness to 500°F (260°C)

Minimal expansion rate to 500°F (260°C)

Excellent wear resistance in bearing grades

Higher Strength & Stiffness with Glass & Carbon Filled Grades

Able to endure harsh thermal, chemical and stress conditions

Low Outgassing Material (4203 Grade)

Total Mass Loss (TML%) 1.85% (4203 Grade)

Collected Volatile Condensable Materials (CVCM%) 0.00% (4203 Grade)

Water Vapor Regained (WVR%) 0.49% (4203 Grade)

Common Torlon ® PAI Applications

Bearing Cages

Bushings & Bearings

Can Mandrels

High Temp Bushings & Bearings

High Temperature Electrical Components

Insulators & Electrical Connectors

Labyrinth Seals

Pump Seal & Wear Components

Reciprocating Compressor Components

Rotating Equipment Components

Seal Rings

Seals

Semiconductor Parts (Burn In Test Sockets)

Structural Parts

Wear Rings

HONY Plastic stock all commercially available grades of TORLON® sheet, rod and tube and offer cut to size, same day shipping on all inventoried TORLON® materials.

HONY Plastic offer Torlon® PAI Precision CNC Machined Parts, Injection Molded Parts & Technical Support