... : non-toxic, Water- proof, safe for health, Anti-adhesion food.4..endure high temperature from -40 to 250 ... -7 days(as your order)6.Welcome OEM&ODMname silicon carbide mechanical seal ringmaterial100&% siliconeInternational Certification FDA / SGScolorany Pantone ... perfect sense of touch ,brilliant design of appearance2. Anti-dust, anti-slip, anti-aging, heat-resistance,water-proof3. eco-friendly , ...