Modified O-ring packing for nebulizing and heating gas ports on heated LCMS series. Compatible with LCMS-8045/8050/8060(NX), LCMS-9030 and LCMS-9050. Must be purchased with 225-49201 and replaced at the same time. NOTE: 225-49201 (gas port nipple) will be automatically added to the cart when the O-ring is added.