... ,MOQ:5000pcs 3,Material: silicone 4,OEM & ODM warmly welcomed New Arrival Silicone O Rings:1,Performance: FDA grade, oil resistance, friction ... of o-rings, washers and gaskets 3,Color: free choice(black, white, green, red, brown, yellow, purple, pink, translucent, clear etc ... sizes are available upon request(OEM & ODM products warmly welcomed) New Arrival Silicone O Rings