A seal backup including: a ring-like body, the body including: a first portion of the body having a first generally zig-zag construction, the first generally zig-zag construction facilitative of radial expansion of the first portion; a second portion of the body having a second generally zig-zag construction, the second generally zig-zag construction facilitative of radial expansion of the second portion; a parting feature disposed between the first portion of the body and the second portion of the body facilitative of relative movement between the first portion of the body and the second portion of the body.