Info o ring compression info free.
O ring cross section formula.
An o ring sizing cone how to measure o ring dimensions.
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 05 inches.
It is a loop of elastomer with a round cross section designed to be seated in a groove and compressed during assembly between two or more parts creating a seal at the interface.
O ring sizes are specified by the inside diameter outside diameter od and the diameter of the cross section thickness.
O ring application pressure vs.
Info o ring compression info free groove volume o ring inner diameter stretch o ring outer diameter upsetting info results at service min.
Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections.
In de signing this new group of o rings we left spacing in the part numbers to allow us to add additional sizes should they be required.
By selecting it to be slightly less than the groove s inner diameter the o ring will stretch and hug the groove.
The actual calculation for the cross section needed in an o ring varies depending on whether it will be used in a dynamic or static application.
In a dynamic situation.
O ring gland clearance gap size.
An o ring also known as a packing or a toric joint is a mechanical gasket in the shape of a torus.
Excessive stretch can overstress material thin cross section and reduces squeeze cross section reduction due to stretch about half of the id stretch.
Recommendations are based on available technical information and are offered as suggestions only any reliance placed on such information by the user is strictly at the user s risk.
Please contact us if you are looking for a size not shown in the 5 32 group.
The o ring must be compressed by a predetermined amount and this compression determines the o ring cross section diameter.
O ring installed stretch groove diameter o ring id o ring id general rule is 0 5.
In the uk o ring sizes are specified by the british standard bs and each ring size has a related bs number.
Info results at installation min.
The o ring calculator tool is intended to form the basis of an o ring installation and assist with selection of o ring and hardware dimensions.
For recommended o ring c s squeeze values please refer to page 11 12.
The difference between the original o ring cross section and the final o ring cross section once installed is known as the compression squeeze.
The measurements are either in inches or in millimeters.
O ring sealing careful consideration must be given to the size of the o ring in relation to the size of the glandular space into which the o ring is being installed.
The o ring inner diameter is typically chosen to be close to the groove s inner diameter.
