1~10Lit Stainless-steel Vacuum Reaction Vessel, Round Bottom, 45°DN-Flange with Groove & Teflon FEP O-Ring SealWith Perfect Compatibility 45° DN Flanged Lid, 환저 스테인리스 스틸 진공 반응 베셀, O-링 씰 포함 (DH24CAT00002528)