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Frequently Asked Questions

Gas Chromatography Accessories
Should there be an O-ring between my SGT filter (cat# 22060 or 22062) and the baseplate it is mounted on?
To protect the baseplate, it is shipped with a cover, held in place by a large knurled ring. There is a large O-ring (about 1 inch in diameter) between the baseplate and the protective cover. Sometimes this O-ring falls out, leading the user to question if the O-ring should be on the baseplate when attaching a filter. The O-ring should stay with the protective cover. If the o-ring is left on the baseplate, the filter will not seat properly and there will be no flow through the system. The proper procedure is: unscrew the knurled ring, remove the cover and O-ring, attach the filter cartridge, then secure it by screwing the knurled ring back on the assembly.