alternative ferrules for MS interface nut

[steven]

hello,

We use vespel/graphite ferrules (85% - 15%) to connect our capillary column 0.25 mm ID 30 m. to the MSD interface. The MS is an 'old' Agilent 5972. The problem is that we daily have to retighten the nut to avoid leaks. This is very boring, I think it has to do with the ferrule material. I heard there exist a new type of ferrules, consisting of aluminium and vespel. This should be a valuable alternative. Who can give advise? Thanks,

Steven

[Consumer Products Guy]

We also have an "old" 5972 MSD as well some newer ones. We use SGE Sil-tite metal ferrules for the interface to seal well. I have that listed as part #73200.

[steven]

Thanks,

We also have an "old" 5972 MSD as well some newer ones. We use SGE Sil-tite metal ferrules for the interface to seal well. I have that listed as part #73200.