Silicone gasket 1) gas tightness well 2) FDA, SGS, LFGB 3) Chemical resistance 4) temperature ... Material: various kind of rubber material are available. such as silicone, NR, NBR, CR, EPDM etc.3. Resistant to ... and low temperature.4. Our rubber products can approved by FDA, SGS, REACH, LFGB. According to clients demand.5 ... .7. Any questions, welcome to contact us. FDA Grade silicone rubber sealing ring