CAD-style cross-sectional technical illustration. Vertical cylindrical structure. Upper part: yellow cap, fully circular outer shape. Lower part: red cover, circular shape. Inside the red cover, three elastic snap-fit tabs evenly spaced at 120 degrees along the inner circumference. The tabs are shown flexing inward as the yellow cap is inserted, emphasizing elastic deformation. Show the yellow cap above and partially inserted into the red cover. Add a vertical downward arrow indicating automatic assembly. Clean white background. Thin blue outline lines. Mechanical CAD section view style. High clarity engineering drawing. See more