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Vespel ® Polyimide SP-22 40% Graphite Filled

Compliance Info

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General Info

Vespel ® SP-22 has 40% graphite by weight for enhanced wear resistance, lower friction, improved dimensional stability (low coefficient of thermal expansion), and stability against oxidation.

Click for more information on the complete line of Vespel PI Plastics

Key Properties

CLTE Similar to Aluminum
High Strength at High Temperatures
Low Friction
Low Wear

Limitations

Chemical Resistance to Some Strong Acids and Bases
Hydrolyzes in Presence of Steam

Applications

Bushings & Bearing
Dynamic Seals
Thrust Washers

Resin Trade Names

DuPont™ Vespel®

Manufacturer Trade Names

DuPont™ Vespel® Polyimide SP-22

Boedeker Plastics, Inc. stocks & supplies plastic sheet, rod, tube, film and custom profiles and machine parts from these shapes that are produced from plastic resin. In many cases the manufacturer of the shape has their own product trade name. If your specification calls for a specific resin grade or manufacturer trade name, we can supply a shape made from that resin to meet your specification or suggest an equal. If you require a specific resin or brand it must be specified at the time of order.

Available Sizes

Sheet Thickness .062” to 2.000” Width & Length 10.000” x 10.000” Rod Diameters .125” to 3.250” Max Length 38.000” Tube OD Outside Diameter 3.100” to 12.500” ID Inside Diameter 2.000” to 11.500” Max Length 33.000” Boedeker offers cut to size service on all in-stock items and same day shipping. If you don’t see the size your looking for contact us for alternative options.

Available Colors

Black

Safety Data Sheet

Download Safety Data Sheet

Typical Properties of Vespel ® Polyimide SP-22 40% Graphite Filled

DETAIL
Description			Value
Material Type			Imidized Amorphous Thermoplastic
Chemical Name			PI Polyimide
Trade Name			DuPont™ Vespel® Polyimide SP-22
Additives			40% Graphite
Color			Black
Manufacturer			DuPont
PHYSICAL
Property	Test	Unit of Measure	Value
Density	ASTM D792	g/cm³	1.65
	ASTM D792	lb/in³	0.06
Water Absorption, 24 hrs, Immersion	ASTM D570	% by wt.	0.14
MECHANICAL
Property	Test	Unit of Measure	Value
Tensile Strength	ASTM D638	psi	7,500
Tensile Elongation at Break	ASTM D638	%	3
Flexural Strength	ASTM D790	psi	13,000
Flexural Modulus	ASTM D790	psi	700,000
Compressive Strength	ASTM D695	psi	16,300
Compressive Modulus	ASTM D695	psi	475,000
Hardness	ASTM D785	NA	Rockwell E5 - 25
Static Coefficient of Friction	Static COF in Air*	NA	0.27
Dynamic Coefficient of Friction	COF@PV = 3.5 MPa m/s (100K psi-ft/min)*	NA	0.09
THERMAL
Property	Test	Unit of Measure	Value
Coefficient of Linear Thermal Expansion	ASTM D696	x 10-5 in./in./°F	2.1
Max Continuous Operating Temp		°C	260
		°F	500
Minimum Operating Temp		°C	-195
		°F	-319
Thermal Conductivity	ASTM C117	BTU-in/ft²-hr-°F	12
	ASTM C117	x 10^4 cal/cm-sec-°C	41.3
Flammability Rating	UL94	NA	V-0
COMPLIANCE
Description			Value
FDA			No
USDA			No
NSF			No
3-A Dairy			No
Canadian Food Inspection Agency			No
USP Class VI			No
OTHER
Description			Value
UV Resistant			No
Relative Cost			$$$$$$$$$$
Machinability			5

Relative cost based on a scale of one dollar sign ($) as the lowest to ten dollar signs ($$$$$$$$$$) as the highest. Machinability based on a scale of 1 to 10, with 1 being the easiest and 10 being the most difficult to machine. NOTE: All information contained on www.boedeker.com, downloadable documents and printed literature is intended for technical reference only and considered to be accurate for reference purposes only. Boedeker Plastics, Inc. makes no guarantee and offers no warranty for fitness in use and strongly recommends the user validate any plastic, machined part, or product in a specific application for fitness in use.

DuPont™ Vespel® is a registered trademark of DuPont.