Gas direct injector tip seal

A fuel injector assembly, comprising:

• an elongated injector body having a fuel passage extending therethrough and terminating at a tip thereof, said injector body including a recessed groove in an outer diameter thereof;
• and
• a ring shaped seal body formed of between 10 and 35 percent carbon and the remainder being polytetrafluoroethylene, said ring shaped seal body disposed in said recessed groove.

A fuel injector assembly, comprising:

• an elongated injector body having a fuel passage extending therethrough and terminating at a tip thereof, said injector body including a recessed groove in an outer diameter thereof, said recessed groove having a first, radially extending, end wall and a second, radially extending, end wall spaced from said first end wall by a first distance, said first end wall being disposed in closer proximity to said tip than said second end wall, and a continuously sloped axially extending base wall surface extending from said first end wall to said second end wall such that a first end of said continuously sloped axially extending base wall surface, adjacent to said first end wall, has a smaller diameter than a second end of said continuously sloped axially extending surface, adjacent to said second end wall;
• and
• a ring shaped seal body disposed in said recessed groove.

A fuel injector assembly, comprising:

• an elongated injector body having a fuel passage extending therethrough and terminating at a tip thereof, said injector body including a recessed groove in an outer diameter thereof;
• and
• a seal body having an uninstalled flat disc-shape with a pair of side walls having an aperture centrally located therein and a radial dimension extending radially from said central aperture to an outer periphery, said seal body being inserted in said recessed groove with said pair of sidewalls being flipped so as to be disposed such that said radial dimension of said pair of side walls extends axially relative to said elongated injector body.

A method of installing a seal on a fuel injector body having a fuel passage extending therethrough and a recessed groove in an outer diameter thereof, comprising:

• a sliding seal body, having an uninstalled flat disc-shape with a pair of side walls having an aperture centrally located therein and a radial dimension extending radially from said central aperture to an outer periphery, over an end of said fuel injector body into said recessed groove while simultaneously flipping said pair of sidewalls so as to be disposed such that said radial dimension of said pair of side walls extends axially relative to said elongated injector body.