Seal cartridge control valve

A seal cartridge for sealing an outer surface of a plug to an inner wall of a cage in a control valve, the seal cartridge comprising:

• a flexible seal ring disposed in a seal groove, said flexible seal ring including:
• a first front sealing face adapted for sealing contact with the outer surface of the plug,
• a rear face,
• at least one downwardly disposed upper face, said face being disposed between the first front sealing face and the rear face,
• at least one downwardly disposed lower face, and
• a second front sealing face disposed upwardly between the downwardly disposed lower face and the first front sealing face;
• an upper retaining ring disposed adjacent to the flexible seal ring, said upper retaining ring including:
• at least one downwardly disposed lower face disposed proximal to the downwardly disposed upper face of the flexible seal ring;
• wherein said at least one upper face of the flexible seal ring being adapted to flex away from the at least one downwardly disposed upper face of the upper retaining ring, and said lower face of the flexible seal ring being adapted to flex downward.

A flexible seal ring for sealing an outer surface of a plug to a cage wall in a control valve, the flexible seal ring including:

• a first sealing face adapted for sealing contact with the outer surface of the plug;
• a rear face disposed opposite the first sealing face, the rear face is axially offset relative to the front sealing face;
• and
• an upper face disposed between the first sealing face and the rear face, the upper face extending from the rear face towards the first sealing face such that an interior angle between the upper face and the rear face is greater than 110 degrees.