Silicone o-rings & national o-ring

National o-ring

National o-ring standard sizes such as AS568a and AS4716 (American Standard) and BS1806 and BS4518 (British Standard) are commonly used throughout the world. Other less common national o-ring standards such as 'R' sizes are used in Europe. Non-standard o-ring sizes are generally referred to by their dimensions, given as; internal diameter x cross section, in either imperial or metric measurements. O-rings can be manufactured in a matter of days at PPE to any national o-ring standard size. Groove dimensions for these national o-ring standards can be quickly and easily obtained using the 'Hardware Design Tool' on PPE's website. 

Silicone o-rings

Silicone o-rings are commonly used in food, brewing, pharmaceutical and aerospace applications due to their high and low temperature capability. Silicone o-rings are available from PPE in a variety of colours and hardness, in any size, with a choice of peroxide or platinum cure, many grades are compliant with various regulatory requirements such as FDA, USP Class VI, WRC and 3-A.
Platinum cured silicone o-rings offer high levels of purity, and in the brewing industry this has the advantage of eliminating the risk of tainting the taste of beers, a common problem with standard silicone o-rings and seals.

For further information please call us or contact us for queries related to silicone o-rings or national o-ring.