How do you size an O-ring?

How do you size an O-ring?

How to Measure O-Rings

  1. Place the O-ring on a clean, flat, level surface.
  2. Determine the inside diameter by using a ruler to measure from one inner edge to another.
  3. Use a ruler to measure the diameter, from one outer corner of the O-ring to the other outer corner.
  4. Finally, measure the cross-section.

How do I know what size O-ring to buy?

The best way to size an o-ring is by measuring the CS (cross-section) and ID (inside diameter). For measuring the cross-section, it is best to use a caliper, a.k.a. micrometer. If you don’t have one available, various other sizing tools can be used to get a close estimate.

How do you read O-ring numbers?

Measurement Formulas:

  1. Outside Diameter (OD) = Inside Diameter + (2 x Cross Section).
  2. Inside Diameter (ID) = OD – (2 x CS).
  3. Cross Section (CS) = OD – ID, ÷ 2.

How do you select O-ring groove size?

Select the Seal. If the bore or shaft size you are using is not listed, select the O-Ring with an inside diameter just smaller than the shaft you are using. If you are designing a face seal, select the O-Ring with an inside diameter which will position the O-Ring on the side of the groove opposite the pressure.

Can o-rings be reused?

In many cases an O-ring can be reused, an advantage over non-elastic flat seals and crush-type gaskets. The duration of life in the correct application corresponds to the normal aging period of the O-ring material. O-ring failure is normally gradual and easily identified.

Are there different types of o-rings?

Some of the common types of O-ring materials include PTFE, Nitrile (Buna), Neoprene, EPDM Rubber and Fluorocarbon (Viton). Silicone and Kalrez® O-ring materials are also widely used, especially in high temperature applications.

How do I contact Parker O-ring?

Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 † Fax: (859) 335-5128 Parker O-Ring Handbook 1.7.1 Static Seals

Why choose Parker’s O-rings?

That’s because Parker’s O-Ring & Engineered Seals Division develops, manufactures and supplies precision-engineered O-rings and custom seals by offering a unique combination of experience, innovation and support. Quality Assurance

Is there a P65 warning on Parker O rings?

WARNING This product contains a chemical known to the state of California to cause cancer, or birth defects or other reproductive harm. For more information go to MATERIAL OFFERING Parker Compound O-Rings Molded Shapes Extruded Seals Lathe Cut Machined Spliced Seals Backup Rings

What is the Parker O-ring Handbook?

Literature Since its initial release, the Parker O-Ring Handbook (ORD 5700) has been a fixture on the reference shelves of engineers and seal specifiers worldwide. This book contains extensive information about basic sealing elastomer properties, typical O-ring applications, static and dynamic seal design fundamentals, and O-ring failure modes.