| 摘要 |
<p>According to the present invention, disclosed is a metal O-ring seal (100) formed into a circular ring shape having a through-hole (110) inside in which the shape and size of an outer circumferential surface (120) follow standards, and a thickness (t) from the outer circumferential surface (120) to an inner circumferential surface (130) is controlled in the circumferential direction of a vertical cross-section so as to increase resilience, wherein the thickness (t) gradually decreases as it circumferentially approaches upper and lower portions from both sides in the circumferential direction of the vertical cross-section, raised protrusions (140) are projected toward the center of the vertical cross-section at the inner circumferential surface (130) of the upper and lower portions, and grooves (141) are formed at both sides of the protrusions (140).</p> |
