How do you size an o-ring groove?
Contents
How do you size an o-ring groove?
Based on the cross section (CS) of your O-ring, you will choose the corresponding O-ring groove depth and O-ring groove width dimensions….Welcome to our O-ring Groove Design section.
| O-ring CS | L | G |
|---|---|---|
| 0.07 | 0.055 | 0.095 |
| 0.103 | 0.088 | 0.146 |
| 0.139 | 0.121 | 0.193 |
| 0.21 | 0.186 | 0.286 |
What is groove in o-ring?
Designing the parts of an application where o-rings will be applied is broadly termed “o-ring groove design”. In order to seal properly, the o-ring has to deform in the application by being compressed and stretched in any number of ways.
How much should an o-ring stick out?
must be smaller than the piston groove diameter, so that the O-ring is slightly stretched, fitting snugly in the groove. This stretch should be between 1%-5% with 2% as the ideal in most applications. A stretch greater than 5% is not recommended.
How deep should a groove be for an o-ring?
Cross Section & Groove Design Data
| Available Cross Sections for Encapsulated O-Rings & Groove Design Data | ||
|---|---|---|
| Inch | MM | Groove Depth |
| .063±.004 | 1.60±0.10 | .046 |
| .070±.004 | 1.78±0.10 | .049 |
| .079±.004 | 2.00±0.10 | .057 |
How do you choose an o-ring diameter?
How to Measure O-Rings
- Place the O-ring on a clean, flat, level surface.
- Determine the inside diameter by using a ruler to measure from one inner edge to another.
- Use a ruler to measure the diameter, from one outer corner of the O-ring to the other outer corner.
- Finally, measure the cross-section.
How do you calculate an O-ring squeeze?
Find your o-ring’s squeeze amount in inches by subtracting the gland depth from cross-sectional diameter with a calculator. For example, if your o-ring’s cross-sectional diameter is 1.25 inches and its gland depth is 1.20 inches, subtract 1.20 from 1.25 to determine that the o-ring is able to squeeze out a total of .
How do you make an O-ring seal better?
Use the Right O-ring Lubricant You can simply apply a thin film of mineral oil, silicone oil, grease, or application fluid. This will help minimise friction between the sealing ring and the surface with which it is paired. As such it ensures that the ring fits in the groove quite easily.
What are the dimensions of an O ring groove?
Our o-ring groove design guides list default o-ring groove dimensions for the most basic applications and are intended to be used with the following o-ring groove design considerations to engineer an o-ring gland to optimize specific application performance. The wrong size groove makes the best o-ring underperform.
Is there a fourth table for O-ring groove design?
Lastly, the fourth table is for dovetail groove design. These o-ring groove design guides offer default dimensional guidance for basic o-ring groove design applications. A flange or face seal is static and will not have a gap between surfaces, eliminating any design issues associated with extrusion.
How to create a global O ring groove?
Flange/Face Seal AS568 Series O-Ring Cross-Section O-Ring Cross-Section Gland Depth (D) Squeeze Nominal TOL (+/-) Actual -0XX 0.070 0.003 .055-0.057 .010-.018 -1XX 0.103 0.004 .088-.090 .010-.018 -2XX 0.139 0.004 .121-.123 .012-.022
What are the properties of the O ring?
O-Ring Material Properties Compare the o-ring material properties of FFKM, Viton, Buna-N, Aflas and more. O-Ring Application Pressure Vs. O-Ring Gland Clearance Gap Size Need space in groove to allow for volume swell, thermal expansion, and increasing width due to squeeze