Abstract:
A gasket is provided with a tacky polyurethane or polyurea gel body and a metallic mesh skeleton where the skeleton has been coated with a conversion coating. The conversion coating helps reduce corrosion in the gasket and corrosion on the parts that place the gasket under compression, especially where an environment conducive to galvanic corrosion is present. This gasket may then be used in assemblies which include aircraft parts, which parts may be subject to extreme environmental conditions.
Abstract:
Applicants provide a gasket having a sticky or tacky (to the touch) flexible or elastomeric, resilient body. The body has an upper surface which contacts an upper skin, a fabric, typically woven, non-sticky (to the touch and to the removable workpiece) and at least partly permeable (to the body when under compression), and a lower or second surface that is uncoated and uncovered. The upper skin adheres to the upper surface of the body but is generally non-tacky with respect to a removable workpiece and/or static base structure, which structure and workpiece will receive a gasket, typically under compression, therebetween. The body of the gasket may include a flexible skeleton or other flexible member substantially enclosed within the body.
Abstract:
A gasket for compressible placement between a first surface and a second surface is disclosed. In one embodiment, the gasket has a cellular metal skeleton embedded in a viscoelastic, pliable, deformable tacky polymer body. The skeleton has multiple strands, which connect to form multiple interconnected cells or pores. The skeleton, prior to being encapsulated in the tacky polymer body, is typically about 75% or more void space. The void space is substantially filled in the manufacture of the gasket, with the tacky uncured polymer. The uncured polymer will set up or cure, and then the gasket may be used.
Abstract:
A thin, cured gel gasket is disclosed, including methods of making the thin gel gasket and the use of the thin gel gasket in an aircraft joint. In one embodiment, the thin gel gasket has no skeleton or other structure and is comprised of only a cured polyurethane gel and has a thickness of less than about 12 mill. It is manufactured using a release film that is adapted in a number of ways to make release from the gel prior to use easier. In one method of making and using the thin gel gasket, it is applied to a joint which is subject to compression, in one embodiment, a lap joint of an aircraft fuselage.
Abstract:
A gasket or tape material for sealing between two members. The gasket or tape material, in one embodiment, includes a skeletal member and/or metallic and/or non- metallic particles. Enclosing the skeletal member and/or particles is a flexible, compressible resilient polyurea body member having a tacky outer surface, the tacky outer surface for engagement between the two members. The resilient body may be comprised of polyurea. The skeletal member may be comprised of a metallic or a non-metallic material, woven or non-woven metallic or non-metallic.
Abstract:
A sealant is provided for use on an aircraft or other vehicle. The sealant may be used with a gasket. The sealant is a perimeter seal that comprises a polyurea member. The polyurea member is a self-curing, two-component mix. It may cure to a hardness in the range of about 40 to 100 (Shore A). It may maintain an adequate peel strength to withstand multiple thermal and pressure cycling, and may have a working life, wherein it may be shaped, of less than about eleven minutes.