OMNIFilter’s K4 Undersink drinking water O-ring kit is for use with OMNIFilter filter housings OT32 CBF1 CBF3 USM3 SFM2 OCT2 RO2000 and RO2050. Kit contains O-rings that fit most Culligan and DuPont Undersink filter systems. Kit contains 4 different sized O-rings and silicone lubricant.
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