The PTFE plug fits into the micro-finish barrel. The plug also reduces freezing problems and grease contamination.

Item Number	Item Description	PQ
CG-8622-60	Funnel, 60mL, Separatory, Squibb, PYREX® Stopper # 16, PTFE® Stopcock	CS4
CG-8622-125	Funnel, 125mL, Separatory, Squibb, PYREX® Stopper # 22, PTFE® Stopcock	PK1
CG-8622-250	Funnel, 250mL, Separatory, Squibb, PYREX® Stopper # 22, PTFE® Stopcock	PK1
CG-8622-500	Funnel, 500mL, Separatory, Squibb, PYREX® Stopper # 27, PTFE® Stopcock	PK1
CG-8622-1L	Funnel, 1000mL, Separatory, Squibb, PYREX® Stopper # 27, PTFE® Stopcock	CS1
CG-8622-2L	Funnel, 2000mL, Separatory, Squibb, PYREX® Stopper # 38, PTFE® Stopcock	CS1
CG-8622-4L	Funnel, 4000mL, Separatory, Squibb, PYREX® Stopper # 38, PTFE® Stopcock	CS1
CG-8622-6L	Funnel, 6000mL, Separatory, Squibb, PYREX® Stopper # 38, PTFE® Stopcock	CS1