초록 ▼

This invention discloses, as a manufacture, a vehicle O ring fuel cap gasket having a diagonally inverted modified C shape cross section and a groove extending for the full circumference of the O ring and in cross section the groove edges extend downward, with one or first edge extending downward to

This invention discloses, as a manufacture, a vehicle O ring fuel cap gasket having a diagonally inverted modified C shape cross section and a groove extending for the full circumference of the O ring and in cross section the groove edges extend downward, with one or first edge extending downward to about 4 o'clock position and the other or second edge extending downward to about 7:30 o'clock, to provide a groove opening extending diagonally upwards for a depth of about 2.2.times. to about 2.5.times. the thickness T-T' of the back of the C shape, and optional ridges on the outer circumference, the inner circumference, or the top of the O ring, and the O ring formed of an elastomer having a Shore A hardness about 50 to 60 and ultimate elongation range of 200% to 315%.

대표청구항 ▼

[ What is claimed is:] [1.] As an article of manufacture a vehicle O ring fuel cap gasket, wherein the improvement comprises;a--said vehicle O ring fuel cap gasket having a diagonally inverted modified C shape in cross section and,b--a groove channel extending for the full circumference of said O ri

[ What is claimed is:] [1.] As an article of manufacture a vehicle O ring fuel cap gasket, wherein the improvement comprises;a--said vehicle O ring fuel cap gasket having a diagonally inverted modified C shape in cross section and,b--a groove channel extending for the full circumference of said O ring and,c--in cross section said groove channel having edges extending downward and,d--a first edge of said groove channel extending downward to about 4 o'clock position and second edge of said groove channel extending downward to about 7:30 o'clock and,e--said groove channel extending diagonally upwards for a depth of about 2.2.times. to about 2.5.times. the thickness T-T' of said C shape and,f--said O ring formed of an elastomer having a Shore A hardness of about 50 to 60 and ultimate elongation range of 200% to 350% and,g--said elastomer selected from the group consisting of fluoroelastomer and nitrile rubber.