Glass Reactor 2L-100L reaction flask Professional manufacture Material:G3.3 borosilicate ... mechanical seal, 18mm PTFE three-layer stirring bar (stainless steel core, PTFE outer), PTFE active discharge valve.5. The glass material ... produce many different chemical kettle, high-pressure vessel, reaction kettle, reactor, bulk tank, magnetic mixer, glass kettle, enamelware reaction kettle, electric ...