Abstract: A method for sealingly coupling a first component and a second component. The method includes forming a polymer male portion attached to the first component. The male portion has a first axis and a first bore extending therethrough. The male portion has a first stop surface, a second stop surface and an annular sealing portion intermediate the first stop surface and the second stop surface. The method also includes forming a polymer female portion attached to the second component. The female portion has a second axis and a second bore extending therethrough. The female portion has a third stop surface, a fourth stop surface and an annular ring intermediate the third stop surface and the fourth stop surface. The male portion is urged towards the female portion so that at least one of the first stop surface is adjacent the third stop surface or the second stop surface is adjacent the fourth stop surface.

Abstract: A method for sealingly coupling a first component and a second component. The method includes forming a polymer male portion attached to the first component. The male portion has a first axis and a first bore extending therethrough. The male portion has a first stop surface, a second stop surface and an annular sealing portion intermediate the first stop surface and the second stop surface. The method also includes forming a polymer female portion attached to the second component. The female portion has a second axis and a second bore extending therethrough. The female portion has a third stop surface, a fourth stop surface and an annular ring intermediate the third stop surface and the fourth stop surface. The male portion is urged towards the female portion so that at least one of the first stop surface is adjacent the third stop surface or the second stop surface is adjacent the fourth stop surface.

Abstract: A coupling ideally suited for sealing between components such as a fluoropolymer valve body (50) and a fluoropolymer manifold (52) or for coupling tubing end portions, utilizes structure on said components for defining the sealing surfaces. In a preferred embodiment, the coupling comprises a male protruding portion (62), a recessed female receiving portion (64), and a clamping means. The clamping means (92) has an inner threaded surface for engaging a correspondingly threaded portion of the male protruding portion. The male protruding portion is shaped, generally, as a converging rounded conical frustum (65.1) having an exterior surface, a primary sealing surface, a first stop surface (78), a second cooperating stop surface, and a fluid flow duct. The fluid flow duct is preferably concentrically positioned. The recessed portion has a circular perimeter, an inwardly projecting annular ring (74), a first cooperating stop surface, a second stop (82) surface, and a fluid flow duct.

Abstract: A coupling ideally suited for sealing between components such as a fluoropolymer valve body (50) and a fluoropolymer manifold (52) or for coupling tubing end portions, utilizes structure on said components for defining the sealing surfaces. In a preferred embodiment, the coupling comprises a male protruding portion (62), a recessed female receiving portion (64), and a clamping means. The clamping means (92) has an inner threaded surface for engaging a correspondingly threaded portion of the male protruding portion. The male protruding portion is shaped, generally, as a converging rounded conical frustum (65.1) having an exterior surface, a primary sealing surface, a first stop surface (78), a second cooperating stop surface, and a fluid flow duct. The fluid flow duct is preferably concentrically positioned. The recessed portion has a circular perimeter, an inwardly projecting annular ring (74), a first cooperating stop surface, a second stop (82) surface, and a fluid flow duct.