Bb sensors stainless steel protective sleeves bb sensors schuhue 30x4 this stainless steel tube is closed at one end and is designed for the assembly and capping of temperature sensors such as pt100 ptc ntc or to 92 semiconductor type components the sleeve is acid resistant and suitable for use in food processing applications gives protection in critical application areas and when installed in immersion sleeves bb sensors schuhue 30x4 stainless steel protective sleeve