... layer 4,longer lifetime Tairong Machiney Extruder screw/extruder spare parts convenient interchangeability by agile ... LINING , STOP BOLTSTEAM NOZZLE2) ALMEX DISK PLATE , LINER , SCREW , HEAD SCREW MIXING PIN , BUSH , SEAT , DRIVE SHAFT MAIN SHAFT ... WEAR BARREL WEAR BUSH , WORM4) BUHLERDFEB315WORM , INLET SCREW , STOP BOLTDFEA220WORM , INLET SCREW , STOP BOLT , INSERT BUSHSPACER RING , MATRIZE , ...