I was wondering if this at [URL]http://www.homedepot.com/p/HOME-FLEX-3-4-in-Brass-CSST-x-MIPT-Termination-Flange-11-464-008/204367280?MERCH=RV-_-RV_nav_plp_rr-1-_-NA-_-204367280-_-N[/URL] would work and handle stresses of a piston and gas explosions.