The insulator commonly wears off the rear seat strike, so to reduce noise, it must be replaced. 1" heat shrink tubing is probably the smallest that will fit, but I was able to stretch this 0.972" enough to get it over the end. The next size up that I have is 1.35", which seemed too big to shrink down tight. These are 2"-long sections.

http://www.harborfreight.com/88-piece-heat-shrink-tubing-assortment-with-case-67519.html

Owner caption March 2013 · Photo 4928 of 5000