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.

Category: O-Rings | Page 6 | Global O-Ring and Seal

How to Properly Size an O-Ring The First Time Around

Of the four characteristics that define an o-ring (material, durometer, color, and size), determining and properly communicating the exact size needed is often the trickiest part of an order. Applying tried and true methods for determining the correct size will save you time in the short-term and frustration and additional cost down the road. Read […]

July 12th 2016 | Categories: O-Rings | | Tags: o-ring sizes | Read More

All About Neoprene O-Rings

Neoprene o-rings are also known as chloroprene (CR) o-rings and provide good resistance to UV light, oxidation, and weather applications. The elastomer they are made from is cost-effective, water-resistant, and weather-resistant. These o-rings are most commonly used in the refrigeration industry due to excellent resistance to hazardous chemicals like ammonia and coolants like Freon 12, […]

May 25th 2016 | Categories: O-Rings | | Tags: neoprene o-rings, o-ring performance | Read More

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