Patent ID: 7490629

Claim:
A plug kit for sealing apertures consisting of a plurality of plugs, the plurality of plugs comprising: a) a first plug for sealing an aperture, conically shaped, wherein an entire body of the plug is solid and, wherein the entire body is flexible, consisting of: i) a first end with a first diameter; and ii) a second end, opposite the first end, the second end having a second diameter smaller than the first diameter, wherein the diameter of the first plug decreases step-wise along a length of the first plug according to a first step increment; and b) a second plug for sealing an aperture, conically shaped, wherein the entire body of the plug is solid, and wherein the entire body is flexible, consisting of: i) a third end with a third diameter, wherein the third diameter is larger than the first diameter; and ii) a fourth end, opposite the third end, the fourth end having a fourth diameter smaller than the third diameter, smaller than the first diameter, and larger than the second diameter, wherein the diameter of the second plug decreases step-wise along a length of the second plug according to a second step increment that is different from the first step increment and a whole number multiple of the first step increment, and wherein the step-wise diameter decrease of the first and second plugs is orthogonal to the length along the interior of each step and in equal diameter increments such that each step is well-defined and of the same incremental diameter change.