... such as silicone, NR, NBR, CR, EPDM etc.3. Resistant to high and low temperature.4. Our rubber products can approved ... by FDA, SGS, REACH, LFGB. According to clients demand.5. All rubber parts are safe ... are a professional rubber products manufacturer with 11 years experience.7. Any questions, welcome to contact us. FDA Grade silicone rubber sealing ring