Product Announcement from Allied Metrics Seals & Fasteners, Inc.

Metric & Standard O-Rings-Image

Allied Metrics Seals & Fasteners, Inc. manufactures custom o-rings to match your specifications.

Allied Metrics offers over 100,000 Sizes Available From Stock, Any Size, Shape or Material.

Allied Metric Advantage


Allied Metrics offers o-rings in a multitude of o-ring materials and durometers ranging from 25-90 durometer on the shore A hardness scale.

In addition for the standard materials available we also offer o-rings in a variety of materials in specialty grades such as medical grade class VI o-rings, NSF, FDA, and 3A sanitary grades.

What are O-Rings?

O-rings are solid-rubber seals that are shaped like a doughnut and are round in nature. When pressed between two mating surfaces, O-rings block the passage of liquids or gases. O-rings can form a static or dynamic seal. A static seal is where the O-ring does not move and is used simply for containing pressure or maintaining a vacuum. Dynamic seals can be reciprocating (like a piston and cylinder), or rotating (shaft rotating in a housing).

O-Rings Available in the Following Materials

Groove Dimensions for O-Rings


Over 100,000 Sizes Available From Stock

Any Size, Shape or Material.

  • Metric Sizes
  • Japanese Sizes
  • American Sizes
  • BS Sizes
  • French Sizes

Available : Special custom made sizes with no tooling & short lead times.

FDA, Class VI Silicone & NSF 61 materials available.

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