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3978-05, Valve,distribution head inlet assembly,complete with valve stem,bushings and o-rings,part 41348
Replacement borosilicate glass valve assemblies for model R220 rotary evaporators. Both code -07 receiving flask bottom drain assembly and code -05 distribution head valve assembly feature PTFE valve stems with Kalrez o-rings. All bushing are PTFE and supplied with CAPFE o-rings. No frozen joint connections with this improved, Ace-Thred design.
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