An o-ring is a solid-rubber seal shaped like a doughnut or torus, it suitable for multitude of sealing uses, including static, reciprocal, oscillating, and dynamic applications at low speed and pressure. In elevated operating pressure environments, addition of a backup ring will greatly increase the extrusion resistance of an O-ring.
O-rings come in a variety of material, and the most common are NBR, Viton®, Silicone, PTFE, etc.O-ring techniques are developing rapidly, and the range of sizes is growing. Please ask our advice when you require special qualities, or sizes.