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 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.
How much clearance do you need for o-rings?
This stretch should be between 1%-5% with 2% as the ideal in most applications. A stretch greater than 5% is not recommended. The resulting stress on the O-ring will cause accelerated aging and cross section reduction. Exception to this rule is a floating seal.
Can o-rings be used in non circular groove patterns?
Can O-rings be used in rectangular or non-circular groove patterns? This question comes up weekly, and the answer is a resounding “Yes!” however there are definite guidelines we want to follow. The inside radius should be at least three times the O-ring cross sectional diameter.
What is o-ring squeeze?
The O-Ring Squeeze Expressed as a percentage of free-state, cross-sectional thickness, “squeeze” is actually a measurement of the amount of deformation to the seal when it comes in contact with its mating hardware.
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 .
Do groove rings come in half sizes?
We don’t make rings in half sizes but if you think you’re a half size, we recommend going down to the nearest whole size for all Solid, NFL, NCAA, Edge, Dimension, Custom, Zeus and Hero rings. We recommend the next size up for Camo, Nomad, Aspire rings.
How do you determine the squeeze of an O-ring?
How much pressure can O-rings take?
Most o-rings are designed to operate at pressures up to 1,500 psi. At higher pressures, the material must have enough strength to resist extruding into the clearance gap. The chart shows the recommended combined limits of clearance, gap, material hardness and system pressure differential.
What is eccentric squeeze?
This is due to the seal being overcompressed in one position, and undersqueezed in another. This condition is typically called eccentricity or sideloading. The impact to the seal is creased squeeze on at one position between the piston and bore, and decreased squeeze on the exact opposite side of the piston and bore.
How do you determine the squeeze of an o-ring?
Can O-rings square?
Square-Profile O-Rings – Square Cut Rings With flat edges on all four sides, square-profile O-rings cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.
What is an O-ring groove design guide?
O-Ring Groove Design Guides. O-ring groove design guides offer default dimensional guidance on the most basic o-ring groove design applications. The best o-rings are useless without the right groove design which becomes increasingly important the more demanding the application environment. Review the general o-ring groove design considerations…
Why choose metmetric O-ring grooves?
Metric o-ring groove designs vary greatly and choosing the right one for your application is important for maximum o-ring performance. This metric o-ring groove design reference guide will help you find the right radius, back-up, pressure and other o-ring dimensions for basic applications.
How much should my O-ring size stretch over my groove?
The O-ring inner diameter (ID) should also stretch approximately 5% over your groove or gland. If you have a custom O-ring size that does not appear on this chart, contact us directly and we can help you size your O-ring gland design accordingly.
What is global O-ring and seal’s o-ring groove design and gland dimension guidelines?
Global O-Ring and Seal has developed o-ring groove design and gland dimension guidelines. These are intended for use in basic design consideration and to understand the core principles involved in o-ring gland/groove design.