Used on f/a-18e/f aircraft. 3.200" overall length seal, closeout-engine bay door, aft fus material is silicone rubber-perzz-r-765, class 3b, grade 50, with nomex ht-2002 cover, nextel fabric; one inner ply of fiberglass (optional) titanium core-6al-4v T1 sheet per mil-t-9046 cond anl; dacron D117 (optional) strip