An o-ring is a round mechanical gasket seated in a groove and compressed during assembly between two or more parts to create a seal at the interface. O-rings are among the most common seals because they are inexpensive, reliable, and simple to mount, and they work in both static applications and dynamic applications such as rotating pump shafts and hydraulic cylinders.

What materials are O-rings made from?

Global O-Ring and Seal stocks o-rings in all major compounds, including Nitrile (Buna), Viton (FKM), EPDM, Silicone, AFLAS, FFKM, HNBR, Fluorosilicone, PTFE (Teflon), Neoprene, and Urethane. The right material depends on what is being sealed, temperature range, pressure, dynamic or static service, desired service life, installation, and tolerances.

What is durometer on an O-ring?

Durometer is the hardness of the rubber compound, measured on the Shore A scale; the higher the durometer, the harder the material. Softer compounds stretch more easily and seal better on rough surfaces, while harder compounds offer greater abrasion resistance and resistance to extrusion.

What sizes do O-rings come in?

Global O-Ring and Seal offers the full line of AS568 standard sizes plus a large selection of metric o-ring sizes, as well as custom sizes for cross-sections larger than the AS568 400 Series.

What is the shelf life of an O-ring?

O-ring shelf life ranges from about three years to unlimited, depending on the elastomer type.

Tag: o-rings | Global O-Ring and Seal

How O-Rings Ensure Reliable Connector Sealing

Summary The Role of O-Rings in Connector Sealing Systems In many applications, connectors serve as sealing interfaces that must protect the connection from external exposure while maintaining system integrity. O-Rings serve as the sealing element, helping connectors resist leakage and contaminant ingress. When integrated into the connector design, they create a barrier that helps protect […]