A little hermetically sealed compressor in a typical purchaser refrigerator or freezer ordinarily contains a rounded metal outer shell completely welded shut, which seals operating gases inside the technique, In such cases an R600a refrigerant. There's no route for gases to leak, for example close to motor shaft seals. https://magazinhub.de/warum-jede-werkstatt-einen-zuverlassigen-kompressor-braucht/