Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.276 in
(7.00 mm)
1.102 in
(28.00 mm)
FFKM Kalrez 8575 O-Ring, Size: 7X28
Material: FFKM Kalrez 8575 O-Ring
Size: Metric 7X28 O-Ring
Part Number: KP8575-OR-7X28
Kalrez® (Dupont)
8575
FFKM (Perfluoroelastomer)
65
Shore A
Semiconductor Material
Color: White
Detailed Description
KP8575-OR-7X28 is a White, 65 Shore A, FFKM (Perfluoroelastomer) O-Ring made from Kalrez® (Dupont). It is a 65 durometer FFKM (Perfluoroelastomer). Kalrez® (Dupont) 8575 is manufactured with the following features & specifications: Semiconductor Material. KP8575-OR-7X28 is Metric size 7X28 O-Ring also referred to as 7mm (Cross Sectional Diameter (CS)) x 28mm (Inside Diameter (ID)). Material: 65 Durometer FFKM Kalrez 8575 O-Ring Size: Metric 7X28, 7mm CS X 28mm ID (0.276" CS X 1.102" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | KP8575 |
| Brand | Kalrez® (Dupont) |
| Material | FFKM (Perfluoroelastomer) |
| Color | White |
| Durometer | 65 Shore A Hardness |
| High Temperature | 300 °C / 572 °F |
| Low Temperature | -12 °C / 10 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 7X28 |
| Cross Section (CS) | 7.00 mm / 0.276 in |
| Inside Diameter (ID) | 28.00 mm / 1.102 in |
| Other Specifications | |
Semiconductor Material | |
DuPont™ Kalrez® 8575 (KP8575) is a high-purity white perfluoroelastomer (FFKM) engineered for semiconductor oxidation, diffusion, and other high-temperature vacuum applications where ultra-low outgassing and long-term seal stability are critical. Designed for static and low-stress sealing, this material provides excellent resistance to dry process gases and minimizes contamination risk through very low extractables and reduced particle generation. Kalrez® 8575 maintains reliable sealing performance at sustained elevated temperatures, with strong compression set resistance and long-term seal force retention in thermal cycling environments. Its white, non-carbon black formulation supports visual inspection and is supplied with ultrapure post-cleaning and packaging for cleanroom use.
Kalrez® 8575 is commonly used for O-rings and gaskets in quartz tube seals, gas feedthroughs, bell jar seals, plenum seals, and other critical components in semiconductor furnaces and vacuum process equipment. It is especially well suited for oxidation and diffusion processes where conventional elastomers exhibit excessive outgassing or loss of mechanical integrity. This compound is selected when process yield, contamination control, and thermal stability are primary design drivers. Canyon Components offers equivalent white, low-outgassing FFKM materials designed to meet similar high-temperature, high-purity semiconductor sealing requirements.
Common relevant keywords:
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