High-Temperature Seal Material Selection Guide
# High-Temperature Seal Material Selection Guide
## Temperature Bands
Classify applications into 150–200 °C, 200–260 °C, and >260 °C to shortlist FKM, HNBR, VMQ, or FFKM compounds.
## Compatibility & Compression Set
Evaluate swell (ASTM D471) and compression set (ASTM D395) at target temperature. Incorporate post-cure steps for fluoropolymers to stabilise properties.
## Design Considerations
Reduce compression to compensate for modulus drop, manage thermal expansion gaps, and use metallic or ceramic hardware for heat dissipation.
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