Agile Manufacturers Of Gaskets & Sealing Products

Manufacturers Of Gaskets & Sealing Products

Agile Manufacturers Of Gaskets & Sealing Products

Manufacture, process and supply plastic, insulation and rubber products to industry

www.par-group.co.uk
Preston (Head office): +44 (0) 1257 248369:
Manchester: +44 (0) 1706 363790

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Vespel® Sheet

Vespel® sheet represents a range of exceptionally tough polyimide materials that blend the advantageous properties of plastics, metals, and ceramics. These sheets offer excellent resistance to wear and deformation, and they perform reliably at very high temperatures.

Key Features

Operates continuously up to +288°C, with short-term tolerance to +482°C.
Exceptional wear resistance combined with ease of machining.
Low thermal and electrical conductivity.
Capable of bearing loads under elevated temperature conditions.

Applications

Vespel® Grade	Application	Composition
SP-1	Ideal for mechanical and electrical components exposed to high temperatures, including valve seats, seals, and insulators.	Unfilled material offering maximum strength and elongation, with the lowest modulus and thermal conductivity, plus excellent electrical properties.
SP-21	Suitable for lubricated or dry applications requiring low friction and wear resistance, such as valve seats, seals, bearings, washers, and seal rings.	Contains 15% graphite, enhancing wear resistance and improving long-term thermal stability.
SP-211	Designed for low friction and wear in moderate temperature and pressure-velocity (PV) conditions, commonly used in bearings like bushings and washers.	Filled with 10% PTFE and 15% graphite to provide the lowest static friction.
SP-3	Optimised for friction and wear in vacuum or inert gas environments, suitable for bearings, piston rings, and seals.	Contains 15% MoS2, delivering superior wear performance in dry conditions.

Availability

We also stock Vespel® Rod and Vespel® Tube to complement our sheet offerings.

Vespel® Grade	Colour	Sheet Size (mm)	Sheet Thickness (mm)
-	-	-	1.6	3.2	4.8	6.3	12.7	25.4	38.1	50.8
SP-1 / SP-21	Brown / Black	254 x 254	*	*	*	*	*	*	*	*
SP-211	Black	254 x 254	*	*	-	*	*	*	*	*
SP-3	Black	254 x 254	-	-	-	*	*	*	-	*

*Indicates sizes we manufacture.

Vespel® Grades:

SP-1 - Unfilled (Brown).
SP-21 - Graphite Filled (Black).
SP-211 - PTFE & Graphite Filled (Black).
SP-3 - MoS2 Filled (Black).

Sheet Size (mm):

254 x 254, 254 x 127, 127 x 127.

Thickness (mm):

Ranges from 1.6 to 50.8 for SP-1 and SP-21.

From 3.2 to 50.8 for SP-211.

From 6.3 to 50.8 for SP-3.

Technical Specification:

Technical Data - SP-1 (Unfilled)

Technical Data - SP-21 (Graphite Filled)

Technical Data - SP-211 (PTFE & Graphite Filled)

Technical Data - SP-3 (MoS2 Filled)

Vespel® is a registered trademark of DuPont™

Vespel® Alternatives

Henry Gallacher also offers a selection of alternative materials to Vespel®. Below are the most frequently requested grades, with additional options available upon enquiry.

Technical Data Sheet - SINT2011
Alternative to Vespel® SP-1

Technical Data Sheet - SINT2021
Alternative to Vespel® SP-21

Technical Data Sheet - SINT2061
Alternative to Vespel® SP-211

Technical Data Sheet - SINT2391 Alternative to Vespel® SP-3