O-ring materials

Trade Name: E0540

Durometer: 80 Shore A     #Might want to consider 70-75 instead of 80 just for installation

Minimum Operating Temperature: -70 °F

Maximum Operating Temperature: 250 °F    #Temperature in manifold should not be an issue

Internally Lubricated: No

Thermal Application Type: Low Temperature (< -30°F)



O-ring Specs

PH_5700_Sec4.indd (parker.com) 

Needs to withstand pressure in manifold ~ 640 PSI (4.41 Megapascals)

Parameters for sizing of o-rings

High values of stretch cause the cross section to decrease, which decreases the squeeze

Parbak Backup Rings?

Should not be necessary for the purposes of the Injector 


O ring calculations:

1/32 (0.04") ring:

Width of groove = 0.04+ 2 (0.2*0.04) = 0.056

Depth of groove = 0.04 - (0.2*0.04) = 0.032


1/16 (0.07") ring:

Width of groove = 0.07 + 2 (0.2*0.07) = 0.098

Depth of groove = 0.07 - (0.2*0.07) = 0.056

Gasket Calculations

Material: Grafoil


Sizing/Dimensions Calculations: https://www.desmos.com/calculator/szykeyfiju


Compression Calculations

Gasket Minimum Load Calc for Outer Gaskets | Desmos


Gasket Minimum Load Calc for Inner Gaskets | Desmos



  • No labels