Concave O-Ring Gland for High-Pressure Sealing

The patent applies curvature by replacing the traditional flat-sided gland with a concavely curved sidewall profile. This curved geometry serves multiple functions: it eliminates sharp corners that cause stress concentrations, creates a self-retaining profile that prevents O-ring dislodgement during assembly and disassembly, and maintains structural simplicity. The concave curvature naturally guides and retains the O-ring through interference fit without requiring additional retention features.

The patent changes the geometric parameters of the sealing gland from a traditional rectangular profile to a concavely curved profile. This parameter change allows the design to achieve effective sealing through the curved interference fit geometry rather than relying solely on tight dimensional tolerances. The concave curvature creates a natural retention mechanism that maintains sealing effectiveness across a broader tolerance range.

The concavely curved sidewall profile creates a self-retaining geometry that prevents the O-ring from falling out or becoming contaminated during routine disassembly and reassembly operations. The curved profile naturally guides the O-ring into place and holds it securely, eliminating the need for additional retention features while preventing contamination risks associated with loose O-rings.

The patent replaces sharp corners with concavely curved sidewalls, which eliminate stress concentration points that would otherwise lead to premature failure in brittle materials like tungsten carbide. The curved profile distributes stresses more uniformly throughout the gland structure, significantly improving durability while remaining compatible with standard CNC machining processes.