Patent ID: 7810816

Claim:
A method for sealing a space formed by first and second end surfaces adjacent inboard and outboard surfaces, the method comprising: inserting a seal into the space without radial interference with inboard and outboard surfaces; engaging first and second end portions of the seal with the first and second end surfaces of the space; locally compressing the seal between the first and second end surfaces; straining the seal to rotate a cross-section of the seal to bias the seal into engagement with the inboard and outboard surfaces of the space, the straining including a terminal portion of the compressing acting to shift the seal into said engagement with said inboard and outboard surfaces of the space to sealingly separate four separate regions within said space when compression terminates and said seal is formed; and the compressing shifts the engagement of the seal radially along the first and second end surfaces, the first and second end surfaces being essentially radial along the shift of engagement.