Sulfur Hexafluoride circuit breaker specialty gases industrial gases electronic gases Ammonia , ... , Nitrous Oxide , Oxygen ,Phospine , Propylene Silane , Silcore, Silicon , TetrachlorideSiliccn ,Tetrafluoride Sulfur Hexafluoride Trichlorosilane Trichlorosilane, Tungsten Hexafluoride , Xeon, cylinder , valve , stainless steel ... C3H8 Kr Xe Ne SIF4 NO NF3 He H2 O2 Sulfur Hexafluoride circuit breaker