The new vacuum seal VS-26 (Part No. 11069167) of the R-300 has completely replaced the well-known WD-26 (048021). Tests have shown that the new VS-26 has improved significantly in terms of tightness and resistance to the WD-26. The seal (PTFE / NBR) is FDA compliant and, in addition to the R-300, is compatible with older models R-210 and R-215. The scope of delivery of the VS-26 includes not only a short installation info but also the necessary adapter.