Vespel® S Family
Vespel® S Polyimide Family
Vespel® S polyimide family of parts and shapes with differing sets of attributes
The Vespel® S Family of products are highly durable polyimides and are used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired.
SP-1
Unfilled. Superior wear and insulation properties with operating temperatures from cryogenic to 300°C. Low electrical conductivity. Highest elongation and purity of SP family. Available as custom parts or stock shapes.
SP-21
Graphite-enhanced with low-friction properties for use with or without lubrication in various applications. Available as custom parts or stock shapes.
SP-202
Conductive parts (<10E2 ohm) to help the elimination of static charge. Excellent wear resistance, dimensional stability at high temperatures and good machinability. Available as stock shapes.
SP-211
Lower coefficient of friction than SP-21 without lubrication in various applications. Available as custom parts or stock shapes.
SP-22
Minimal thermal expansion and dimensional stability for design flexibility. Available as custom parts or stock shapes.
SP-221
For highly specialized applications—against soft metals in “non-lube” conditions. Available as custom parts.
SP-2515
Low coefficient of thermal expansion, excellent wear properties and a low coefficient of friction for dimensional control. Available as custom parts.
SP-3
Used in vacuum and dry environments with low outgassing. Available as stock shapes.
SMR-0454
Graphite-enhanced for low friction. High modulus, low elongation, high compressive strength and low creep with less deflection under load. Available as custom parts.
ST-2010
Similar to SP-21 with improved toughness, higher elongation and better thermal oxidative stability. Better resistance to solvents, acids and bases. Available as custom parts.
ST-2030
Similar to SP-22. Found in applications in which low thermal expansion is more important than strength (which is slightly reduced). Applications may include bearings, bushings and washers. Available as custom parts.
SCP-5000
Unfilled SCP-5000 has better plasma resistance, dimensional stability and chemical resistance than unfilled SP-1. Like SP-1, SCP-5000 has good insulation. It has the highest elongation and purity of the SCP grades. Available as stock shapes.
SCP-5050, SCP-5009 & SCP-50094
Higher thermal oxidative resistance than SP polyimides with superior chemical resistance. SCP-5050 matches the CTE of steel. SCP-5009 and SCP-50094 approximates the CTE of aluminum. Available as custom parts or stock shapes.
SMP-40025
High modulus and low elongation provide dimensional stability at high temperatures and loads. Available as custom parts.
SF-0920, SF-0930, SF-0940
Superior thermal and electrical insulating properties. Unique polyimide foam has higher durability compared to low density polyimide foams. Available as custom parts.
USES AND APPLICATIONS
DuPont™ Vespel® parts have a unique combination of properties that can replace metal, PEEK or ceramic parts in material handling equipment with high temperatures, high wear or no lubrication.
CASE STUDIES
Vespel® SCP-5050 sweep-out fingers and stacker bar inserts for glass handling help increase plant reliability and efficiency and reduce operating costs at Veda-Pack glass manufacturing sites
The operator of a pipeline in the Southwestern U.S. was searching for a case ring material for pumps that would enable improved operating efficiency, increase equipment reliability and avoid the seizing or galling problems encountered with metal components. The metal components were replaced with Vespel® CR-6100 parts, and the results were impressive.
INFORMATION & IDEAS
Low friction plastic applications developed in collaboration with DuPont experts can help improve durability and performance, reduce maintenance, and can even contribute to reduced use of fossil fuels.
DuPont™ Vespel® parts and shapes and DuPont™ Delrin® acetal resin are high-strength, low-friction mechanical plastics that deliver performance for automotive, consumer, and industrial applications.
Vespel® products are made from a variety of materials (polyimides, thermoplastics, composites and chemically-resistant polymers). These products offer a unique combination of physical properties and design flexibility. Parts are available as custom parts, stock shapes, components or assemblies.
DuPont™ Vespel® parts offer low friction, lightweight and durable metal replacement in automotive transmission applications.
