DuPont Mobility and Materials Kalrez® 8475 FFKM Perfluoroelastomer

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DuPont Mobility and Materials Kalrez® 8475 FFKM Perfluoroelastomer (discontinued **)
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Kalrez® Sahara™ 8475 has been specifically developed to meet the challenging requirements associated with sealing applications in semiconductor thermal processes (i.e., diffusion furnace, LPCVD, RTP, lamp anneal, etc.) It exhibits excellent thermal stability and long-term sealing performance, less IR absorption and significantly reduced outgassing properties at elevated temperatures. Kalrez® Sahara™ 8475 has good mechanical properties and is well-suited for static and low stress/low sealing force applications (e.g., quartz tube seals, ball joint seals, bell jar seals, plenum seals, etc.) A maximum continuous service temperature of 300°C is suggested. Ultrapure postcleaning and packaging is standard for all parts made of Compound 8475. Information provided by manufacturer.
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Mechanical Properties	Original Value	Comments

Hardness, Shore M	72	ASTM D2240, D1414 (214 O-rings)
Tensile Strength, Ultimate	11.4 MPa	20 in/min; ASTM D412
Elongation at Break	225 %	20 in/min; ASTM D412
100% Modulus	0.00220 GPa @Strain 100 %	20 in/min; ASTM D412
Compression Set	45 % @Temperature 300 °C	70 hr; ASTM D395B & D 1414 (214 O-rings)

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	300 °C	Continuous

**
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PDVD058 / 33877

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