Ordering information: Replacement borosilicate glass for Buchi® R-220, R-220EX, and R-220SE rotary evaporators. PTFE valve stem parts and valve assemblies, with Kalrez O-Rings, for receiving flasks and a lower distribution heads. Socket joint on item 89215-212 is DN25. Joints on 89215-208 are PTFE, Ace-Thred #11 and #15, and they include CAPFE (PTFE-encapsulated silicone rubber) O-Rings. Replacement O-Rings for the bushings on 89215-208 are CAPFE size –110 (89061-092) for side port and CAPFE size –112 (89061-102) on end. Replacement PTFE valve stem 89235-606 includes two size –011 and one size –111 Kalrez O-Rings (89060-904 and 89060-918).