Dataset of ESCRT-III polymer rings (CdvB, CdvB1 and CdvB2) in wildtype archaea (Sacidocaldarius_DSM639) imaged by (dyMIN) STED nanoscopy. The dataset contains the raw STED image files (16bit .tiff format) on which the analysis was performed to determine the relative positions between CdvB, CdvB1 and CdvB2. Additionally, it contains raw STED images of CdvB1 and CdvB2 in wildtype Sacidocaldarius DSM639 with a constricting neck. The data with constricting necks was subdivided in a category with and without the presence of CdvB.