used to calculate seal compression. Calculate the O-ring I.D. according to the following formula: O-ring I.D. = Groove Diameter% of stretch desired + 1(1% - 5%)Example If Groove Diameter =.231Then O-ring I.D. =.231 =.229 to.220 1.01 to 1.05Depending on % of stretch desired
Full Answer
What is O-ring compression force?
O-ring compression force is the force required to compress an O-ring the amount necessary to maintain an adequate sealing line of contact. To give you the best possible experience, this site uses cookies. By continuing to use the site, or by staying here, you agree to our use of cookies in line with our Privacy Policy.
How do you calculate the amount of force on an O-ring?
Moving vertically to either the 70 or 90 durometer band, you will find the expected range of load in pounds per linear inch of O-ring. Multiplying this number by the O-ring circumference in inches, you are left with the approximate range of compressive force, in pounds.
What can you do with the O ring online calculation tool?
By using our O ring online calculation tool you will save time on calculating and designing O ring grooves and verifying the O ring sealing performance by checking several parameters such as: compression, free groove volume, O ring inner diameter stretch and much more. What you can do with the O ring compression calculation tool?
What is the maximum pressure for an O-ring?
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.
How do you calculate compression force of O-ring?
Moving vertically to either the 70 or 90 durometer band, you will find the expected range of load in pounds per linear inch of O-ring. Multiplying this number by the O-ring circumference in inches, you are left with the approximate range of compressive force, in pounds.
How much force is required to seal an O-ring?
The expected range of force needed to compress an oring 20% with a 0.070” diameter cross section (purple) that is 50 durometer is between 4.5 and 14 pounds per linear inch.
How do you calculate the force of a seal?
To determine the force required for proper sealing of a device, the force per centimeter can be multiplied by the overall length of the boss around the perimeter of the device.
How are O rings calculated?
To measure the outside diameter, use a ruler to measure from one outer edge to the other of the o-ring. You can determine the third diameter of the O-ring with 2 diameters using the following equation: Outside Diameter (OD) = Inside Diameter + (2 x Cross Section). Inside Diameter (ID) = OD - (2 x Cross Section).
How much pressure can o-rings hold?
1,500 psiMost 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.
How do you calculate 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 calculate O-ring groove size?
Groove Design: O-Ring Seals for Static and Non-Rotary Dynamic ApplicationsCalculate the O-Ring groove dimensions. Using the table above, determine the maximum recommended gland depth for your application. ... a. For a rod (shaft) seal:O-Ring Max Groove Diameter = Min Shaft Diameter + (2 x Recommended Gland Depth)b. ... c.
How is rubber deflection calculated?
To calculate rubber deflection take the shape factor raised to the power of 2, then add 1. Next, multiply the result from above by the young's modulus of the rubber. Finally, divide the load acting on the rubber in PSI by the result from above.
What is O-ring compression set?
When an elastomeric material fails to return to its original size after release from a constant compressive load, the amount of material that remains compressed is called a compression set. To be effective, o-rings require a complete, continuous seal to form between sealed surfaces.
How much should an O-ring squeeze?
Squeeze % Optimum range of compression is typically 8%-35%. For Dynamic seals, the upper limit of squeeze should be reduced to 20%.
What is squeeze in O-rings?
What is an O-ring squeeze? The squeeze is a ratio of the amount of deformation applied to the seal expressed as a percentage of the free-state cross-sectional thickness.
O rings online tools
ERIKS offers different methods of interactive customer solutions, such as our unique O ring compression calculation tool [https://rubbertechnology.info/en/tools--calculators/o-ring-calculator/] . This O ring online calculation tool takes the thermal expansion of the groove and the chemical volume swell or shrinkage into consideration.
Save time by using our O ring compression calculation tool
By using our O ring online calculation tool you will save time on calculating and designing O ring grooves and verifying the O ring sealing performance by checking several parameters such as: compression, free groove volume, O ring inner diameter stretch and much more.
What you can do with the O ring compression calculation tool?
O Ring dimensions for the use in a specific groove groove dimensions for the use of a specific O-Ring evaluation of both, any combination of O-Ring and groove for axial seals with inner or outer pressure, piston seals and rod seal applications. Worldwide unique online calculation tool taking into consideration of the thermal expansion of the construction parts and the O-Ring.
Advantages of O ring compression calculation
Easy search for ERIKS standard O-Rings Saving of your designs Easy to use PDF output Fit and feel sample
More about o ring compression calculation
For more information about our O ring compression calculation tool, please fill out our "ASK ERIKS" form on the right or contact our office. Go to the overview of our offices [https://rubbertechnology.info/en/home/contact-eriks/] to choose the ERIKS office near you.
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Why is the groove depth important in O-ring appli-cations?
The right groove depth in O-ring appli-cations is very important because itstrongly influences the squeeze of theO-ring cross section. In the tables thegroove depth always includes themachined groove depth and the clearance gap. The clearance gap influences the rate of extrusion.
What happens when the radial clearance gap between the sealing surface and the groovecorners is too large?
If the radial clearance gap betweenthe sealing surface and the groovecorners (clearance gap) is too largeand the pressure exceeds the defor-mation limit of the O-ring, extrusion ofthe O-ring material will occur.When this happens, the extruded