Compressible differential pressure energized seals for filter elements and the like

An elastomeric differential pressure energized seal coacting between filter element means, having at least one circumferential groove, and a housing, said seal comprising:

• a compressible portion having a large open end and a small open end, said large end directed toward and contacting the housing and said small end directed toward the filter element means;
• an annular flange integrally attached to said compressible portion at its said small end and extending outwardly, said flange operatively communicating with the filter element means and mechanically engageable therewith;
• and
• a skirt integrally connected to said flange and operatively engaging the filter element means, said skirt extending from the outer periphery of said flange around one end of the filter element means and including at least one inwardly directed flange at its distal end which is received by one of said grooves in the filter element means.

An elastomeric differential pressure energized seal coacting between filter element means having recess means and a housing, said seal comprising:

• a compressible portion having a large open end and a small open end, said large end directed toward and contacting the housing and said small end directed toward the filter element means and mechanically engageable therewith;
• an annular flange integrally attached to said compressible portion at its said small end and extending outwardly, said flange operatively communicating with the filter element means;
• and
• a skirt integrally connected to said flange operatively engageable with said recess means of the filter element means, said skirt extending from said flange and having barb means to prevent disengagement of said seal from said recess means.

An elastomeric differential pressure energized seal coacting between filter element means and a housing, said seal comprising:

• a compressible portion having a large open end and a small open end, said large end directed toward and contacting the housing and said small end directed toward the filter element means;
• an annular flange integrally attached to said compressible portion at its said small end and extending outwardly, said flange operatively communicating with the filter element means;
• and
• flap means for aligning the filter element means with the housing, said flap means being integral with and extending inwardly from the interface between said compressible portion and said flange.