Used on f-15i aircraft. manufacturer's suggested name:seal, rubber & fabric combination-exterior cft; molded seal; material:zz-r-765, cl 111a or 111b, gr 50, color no.36375 (ghost gray) ; fiberglass/polyester insert per PS14034, ty 1, cl b, gr 1; D2000 dacronouter wrap, dyed to color 36375 (rh)