A gasket in a transport refrigeration system (TRS) and method of preventing corrosion in a compressor using a gasket. The gasket includes a body, where the body includes a fluid pass portion, and a flange that extends from the body. The body and the flange include a second layer between an outside first layer and a third layer. The second layer is a metal and the metal is a non-uniform thickness that extends across the flange and the body to deflect compression load distribution.

A method for fluidly sealing two conduits having mating surfaces is described. The method includes positioning a gasket between the surfaces, securing the two conduits together with the gasket interposed between the mating surfaces wherein the gasket includes an outer seal with a first thickness and an inner seal with a thickness greater than that of the outer seal. The step of positioning and/or the step of securing includes compressing the thickness of the inner seal. Methods of making the gaskets are also disclosed.

Gaskets for sealing two mating surfaces are described. The gaskets have an outer portion including a core between two sealing layers and an inner portion made of a deformable material and located in an aperature in the outer portion. The thickness of the inner portion is greater than the thickness of the outer portion. The inner portion may include a chemical treatment agent that can provide chemical protection to the mating surfaces. Methods of producing the gaskets and methods of using the gaskets for sealing joints, including corroded joints, are also described.

The composite pipe according to the present invention is made by combining the main portion and the short pipe portion, and has the advantage that the inner pipe of the main portion can be firmly coupled to the inner surface of the short pipe portion without bending or stepping.