Vespel sleeves bushings SP-1

Bunting vespel®
Bearings

VESPEL® -Top of the line machined and Vespel® bearings provide capabilities of high speed, load, and temperature. Bunting Bearings offers a wide range of sizes as standard off-the-shelf, along with a full range of special, made to order sizes.
Vespel® bearings are made from Polyimide resins to combine the best characteristics of plastics, metals, and ceramics. Vespel® resist wear and fight creep; properties that allow them to survive a broad range of conditions, particularly where elevated speeds and high loads present problems.
Precision machined sizes hold close tolerances.

Temperature range: -400°F/+550°F

Intermittently up to +900°F

DuPont™ Vespel ® SP-1 is an unfilled polyimide. SP-1 is a high-purity polymer that provides maximum physical strength, elongation, toughness, and outstanding electrical and thermal insulation values. It offers an operating temperature range from cryogenic to 260°C (500°F). 

Key Properties

Electrical Insulator at High Temperatures

High Strength at High Temperatures

Thermal Insulator at High Temperatures

Low Outgassing Material

Total Mass Loss (TML%) 1.09%

Collected Volatile Condensable Materials (CVCM%) 0.00%

Water Vapor Regained (WVR%) 0.40%

Limitations

Chemical Resistance to Some Strong Acids and Bases

Hydrolyzes in Presence of Steam

Applications

Aerospace - Jet Engine Wear Components

Back End Test Sockets

gaskets

High-Temp Fixtures

Insulators

seals

Semiconductor Components

Spacers

Thrust Washers

Valve Seats