Kalrez® FFKM O-Rings – Premium Chemical & High-Temperature Sealing | Hydro Seals India Hydro Seals supplies genuine DuPont™ Kalrez® FFKM O-Rings, engineered for the most demanding chemical, thermal, and high-purity environments. Kalrez® O-Rings deliver exceptional resistance to aggressive chemicals, solvents, amines, steam, and high temperatures up to 327°C, Low temperature sealing Temperature -42 °C, making them ideal for critical sealing applications where standard elastomers fail. Available grades include Kalrez® 6375, 7375, 6230, 6230UP, 4079, 7075, 0040, each designed for superior performance in Oil & Gas, Semiconductor, Pharmaceutical, Health Care, Aerospace, Petrochemical, and High-Vacuum industries. Hydro Seals ensures authentic Kalrez® materials, precision sizing, rapid supply, and technical support for OEMs and MRO requirements across India’s major metros.