SAE J2663:2019 pdf free

SAE J2663:2019 pdf free.Test Procedure to Measure Permeation of Elastomeric Hose or Tube by Weight Loss
Blank samples (empty hose) can be run alongside the test samples. The use of blanks will help correct for weight changes due to plasticizer losses and for weighing errors due to buoyancy effects. Since none of the samples will be identical though, there is no way to calculate the direct effect it has on the tested samples, so only magnitude effects can be noted. Control samples in Method B are run with fuel, but with a blind hose fitting and no hose attached to assess the magnitude of fuel losses through the gasketed joints.
Cut the hose or tubing sample to the desired length. Longer test specimens will yield more precise results in that end effects are minimized, but longer samples will be more difficult to fit onto the scale and may exceed its weight limit. Measure the length of the hose. Measure the insertion depth of the plugs or fittings. The values that will be used to determine the exposed permeation area will be the distance between ends of the plugs or fttings (L) (i.e.,do not include the length taken up with internal ftting components). If the recommended plug design is used, the insertion depth of the hose over the plug to the collar is 31.75 mm (1.25 in), so L is equal to the hose length minus the insertion length over the plugs 63.5 mm (2.5 in).
For Method A, insert the plugs into each end of the hose up to the collar of the plug, noting one of the plugs must contain a fill hole. Fill the test configuration to approximately 90% full with test fuel and then seal the fill plug with the gasket, inset disk and set screw. Tighten about 1/4 turn and torque to about 5 to 10 in-lb. For Method B, if a one-piece reservoir is used, the assembly and flling will be the same, except the reservoir will be connected to the hose where the solid plug was previously used. With the multi-component reservoir, a solid plug is used at one end of the hose, while the other end is connected to the ftting attached to the metal plate. Fuel is then added to the reservoir soit is 80 to 90% full and then the plate is clamped down in the gasketed configuration.SAE J2663 pdf free download.