Rubber o-rings offer the designer an efficient and economical sealing element for a wide range of static or dynamic applications. Inexpensive production methods and its ease of use have made the o-ring the most widely used seal.Silicon, abbreviation VMQ or MVQ, o-rings is a common and simple rubber elastomer o ring, due to its good properties, it has been widely used in both standard and special applications.Silicone o ring properties as below:1.Excellent heat resistance2.cold flexibility3.dielectric properties?4.especially good resistance to weather, ozone and UV rays.We are VMQ silicone rubber o ring expert supplier,we can supply o-rings others could not supply:1.Tiny small o-rings available.?0.2mm inner diameter and ±0.02 mm tolerance available.2.Large size rubber o-rings.We can supply any nonstandard size of large o-rings by butt joint process3.Food grade silicon o-ring available.4.30-90 shore A hardness o-ring available.5.Besides normal red silicone o ring, transparent silicon o-ring, black silicone o ring, orange silicone o’ring, green silicone o-ring, other colors available.6.Customized silicone seal ring available.Buy good quality silicone o-rings,just come to us.Our Advantages:ISO9001 Certificate -High Quality Control?Subordinated manufacturing factories -Competitive price.RoHS certificate,REACH certificate,FDA certificate - Meet stringent industry requirementsResearch and Development team; -Providing specific sealing solutions for you?Good service:Your inquiry will be answered within 24 hours,if any problems after sales, http://www.ostasos-seals.com/o-ring/o-ring-rubber/silicone-o-ring.html