mechanical seals used in water pumps:water pump seals or water pump mechanical seals
mechanical seals used in chemical pumps:chemical pump mechanical seals or chemical pump seals
DYAPV-W-25 mechanical seals are characterized with a single spring to avoid being clogged and the stationary part is a kind of silicon carbide or tungsten carbide inserted in 304 or 316.
The rotary seal faces can be silicon carbide/sic and tungsten carbide/tc and sometimes the stationary parts of mechanical seals are just 304 or 316L acting as the stationay seal rings which should be lapped and polished.
