KF40 to KF25 reducer union plays as an adapter when customer connects MTI's high vacuum pump (MT-HVS & EQ-PV-HVS with KF40 port) to most of MTI's tube furnace with KF25 flange to achieve high vacuum system.
Dimension
MTI's high vacuum pump with KF40 port to 80mm OD tube furnace with KF40 flange
Make high vacuum pump adapt to most of MTI's tube furnace (except for 80mm) which using KF25 flange by only adding this KF40-25 reducer union
