... , FDA, SGS, LFGB 3) eco-friendly 4) factory direct sales rubber Silicone flat o-ring as per drawing 1. We make ... , 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, non-toxic, odorless and environmental protection.6. We are a professional ...