GASKET
FIG4 is a cross-sectional view taken along line B-B in FIG1
FIG4 is a cross-sectional view taken along line B-B in FIG1. FIG4 shows a portion of the base 10 having the protrusions 20. As shown in FIG4, the support surfaces 20a (the inner circumferential support surface 21a and the outer circumferential support surface 22a) each have a round upper end and a round lower end in the height direction.
cross-sectional view
14
upper surface
12
outer circumferential surface
100
gasket
50
groove
10
base
70
bottom surface
13
lower surface
['1. A gasket (100) to be placed in an annular groove, the gasket (100) comprising: an annular base (10) to be placed in the groove; and a plurality of protrusions (20) arranged at intervals on the base (10) in a circumferential direction of the base (10), the plurality of protrusions (20) protruding from the base (10) to face side surfaces of the groove and having support surfaces (20a) with curvatures corresponding to curvatures of the side surfaces of the groove, wherein each protrusion (20) has a length (L1) in the circumferential direction greater than an interval (L2) between facing ends of adjacent ones of the protrusions (20) in the circumferential direction.']