When reactors have a curved end nozzle, these adaptors are used as interface spacer to connect the glass/bellow with reactor. A flat metal ring with rubber cusions is enveloped with PTFE, to provide ideal sealing. Only PTFE comes in the contact of process fluid. DN | D | D1 | L | 25 | 25 | 60 | 10 | 40 | 37 | 80 | 10 | 50 | 50 | 100 | 10 | 80 | 75 | 120 | 12 | 100 | 100 | 155 | 12 | 150 | 150 | 210 | 12 | 225 | 200 | 260 | 15 | 300 | 300 | 360 | 15 | |