... torch consumable for welding spare parts long/short back cap for WP-18 TIG welding torch1.wp-18 ... nozzles,tips,shield cup,,tips are available in our company 4.We produce many kinds of MIG/ MAG ... cooled and water cooled etc. Including torch head, back cap, cup gasket, collet, collet body, gas lens body, ... ER309, ER316, ER316L etc) insulatorcutting long/short back cap for WP-18 TIG welding torch