A sealant-applicator tip, comprising: a body, having a plane of symmetry, wherein the body comprises an inlet opening and a medial axis, comprising at least one inflection point; a head, extending from the body opposite the inlet opening, wherein the head comprises: a first planar face, comprising a first linear edge; a second planar face, oriented at a first non-zero angle to the first planar face and comprising a second linear edge, wherein the first linear edge of the first planar face and the second linear edge of the second planar face lie in a virtual flat plane; a third face, separating the first planar face from the second planar face, wherein the third face comprises a third edge, wherein the third edge lies in the virtual flat plane; a fourth face, comprising a fourth edge; a fifth edge, shared by the first planar face and the fourth face; a sixth edge, shared by the second planar face and the fourth face; a seventh edge, shared by the third face and the fourth face an eighth edge shared between the first planar face and the third face; and an outlet opening, formed in the third face, wherein the outlet opening is in communication with the inlet opening of the body; and a channel, extending from the inlet opening of the body to the outlet opening of the head; wherein the at least one inflection point is a transition point between a concave portion and a convex portion of a line or segment of the medial axis of the body. a body, having a plane of symmetry, wherein the body comprises an inlet opening and a medial axis, comprising at least one inflection point; a head, extending from the body opposite the inlet opening, wherein the head comprises: a first planar face, comprising a first linear edge; a second planar face, oriented at a first non-zero angle to the first planar face and comprising a second linear edge, wherein the first linear edge of the first planar face and the second linear edge of the second planar face lie in a virtual flat plane; a third face, separating the first planar face from the second planar face, wherein the third face comprises a third edge, wherein the third edge lies in the virtual flat plane; a fourth face, comprising a fourth edge; a fifth edge, shared by the first planar face and the fourth face; a sixth edge, shared by the second planar face and the fourth face; a seventh edge, shared by the third face and the fourth face an eighth edge shared between the first planar face and the third face; and an outlet opening, formed in the third face, wherein the outlet opening is in communication with the inlet opening of the body; and a first planar face, comprising a first linear edge; a second planar face, oriented at a first non-zero angle to the first planar face and comprising a second linear edge, wherein the first linear edge of the first planar face and the second linear edge of the second planar face lie in a virtual flat plane; a third face, separating the first planar face from the second planar face, wherein the third face comprises a third edge, wherein the third edge lies in the virtual flat plane; a fourth face, comprising a fourth edge; a fifth edge, shared by the first planar face and the fourth face; a sixth edge, shared by the second planar face and the fourth face; a seventh edge, shared by the third face and the fourth face an eighth edge shared between the first planar face and the third face; and an outlet opening, formed in the third face, wherein the outlet opening is in communication with the inlet opening of the body; and a channel, extending from the inlet opening of the body to the outlet opening of the head; wherein the at least one inflection point is a transition point between a concave portion and a convex portion of a line or segment of the medial axis of the body.