positioned over the hole and an isolation washer having a second diameter being less than the first diameter and consisting of a similar metal as the isolation member is placed over the compressible sealing washer the fastener passes through the isolation washer the compressible sealing washer and the isolation member within the hole where is it tightened to compress the compressible sealing washer between the isolation member and isolation washer forming a water tight seal around the hole to resist corrosion of the magnesium component application_number US 201113278056 A description the following detailed description is merely exemplary in nature and is not intended to limit the subject matter of the disclosure or its uses furthermore there is no intention to be bound by any expressed or implied theory presented in the preceding technical field background brief summary or the following detailed description in this document relational terms such as first and second and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions numerical ordinals such as u201c first u201d u201c second u201d u201c third u201d etc simply denote different singles of a plurality and do not imply any order or sequence unless specifically defined by the claim language additionally the following description refers to elements or features being u201c connected u201d or u201c coupled u201d together as used herein u201c connected u201d may refer to one element feature being directly joined to or directly communicating with another element feature and not necessarily mechanically likewise u201c coupled u201d may refer to.