... 2. AS568 silicone rubber o-ring for toys, BS, JIS, metric all sizes in stock.3. Characteristics: high and low temperature ... A.5. Tolerance: strictly upon international standard, and no flash.7. Color: black silicone rubber o-ring for toys, transparent, green, red ... , yellow, grey, purple, pink, etc. 8. ROHS and REACH approved.9 ...