Chemraz® SD625

Chemraz® SD625 is a black, synthetic, high-purity rubber with temperature and chemical compatibility similar to PTFE. Chemraz® SD625 parts have high service temperatures (up to 500°F/260°C), near-universal chemical compatibility, and extensive compliance coverage. Chemraz® SD625 is our best-performing seal material for pharma, biotech, cosmetic, and food processing applications. Chemraz® SD625 seals have exceptional service lifetimes in steam-in-place (SIP) applications relative to FKM, silicone, and EPDM seals. Chemraz® SD625 o-rings and gaskets typically maintain sealing after thousands of steam sterilization cycles, orders of magnitude longer than other materials.

Features & Benefits

Black compound formulated for Life Sciences applications
Superior high-temperature properties
Outstanding hot water & steam resistance 3-A® & FDA compliant, meeting the highest purity standards
Compliant to USP Class VI

Applications

Mechanical seals
Valves Pumps
Mixers fermenters
Biomedical equipment
Couplings Filters
Dryers Agitators
Sanitary seals
WFI gaskets

Temperature Range

–20°C to 260°C (–4°F to 500°F)

For applications facing extreme temperatures, high pressures, or uniquely challenging operating conditions, our global engineering team delivers fully custom‑engineered solutions. Because every critical environment is different, these designs are developed in close collaboration with you—let’s discuss your requirements to build the right solution.

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