Abstract: A fluid connector assembly comprising (a) a connector body having an inner concave seat having a portion defining a frustoconical surface; (b) an elongate tube having a flared end; and (c) a nut; wherein the connector body is adapted to receive the elongate tube and the nut to form a substantially rigid connection, and wherein the flared end of the tube and the frustoconical surface of the seat are engaged so as to form a fluid seal between the body and the tube; and wherein the flared end has a portion defining an abutment surface having a borderline region in abutment with the frustoconical surface of the inner seat of the body; and wherein the abutment surface of the flared end is a spherical surface.

Abstract: A brake line for a brake system and a hydraulic tubing connector assembly are disclosed. The brake line includes a flare end having an inner wall that includes two or three distinct partially conical surfaces. A sealing area is defined between a run-out cone at the small frustum diameter of the inner wall and a chamfer is defined between the sealing area and the large frustum diameter of the inner wall of the flare.

Abstract: A fluid connector assembly comprising (a) a connector body having an inner concave seat having a portion defining a frustoconical surface; (b) an elongate tube having a flared end; and (c) a nut; wherein the connector body is adapted to receive the elongate tube and the nut to form a substantially rigid connection, and wherein the flared end of the tube and the frustoconical surface of the seat are engaged so as to form a fluid seal between the body and the tube; and wherein the flared end has a portion defining an abutment surface having a borderline region in abutment with the frustoconical surface of the inner seat of the body; and wherein the abutment surface of the flared end is a spherical surface.

Abstract: A connector (10) for sealing an elongated tube (14) to a body (22) comprises a nut (12) concentrically about the tube (14) proximate the flared end (16). The nut (12) has a threaded exterior portion (34) and an abutting face (42) proximate to and concentric with the exterior face (32) of the flared end (16). A non-linear spring (44) between the exterior face (32) of the flared end (16) and the abutting face(42) of the nut (12), and is displaced upon tightening of the nut (12) to the body (22) to generate a substantially constant restorative force over a portion of the displacement to urge the interior face (30) of the flared end (16) into sealing engagement with and against the shoulder (38) of the body (22).