100MM BURGMANN DOUBLE HIGH PRESSURE (2,500PSI) REACTOR SEAL OVERHAULED Mixer Unit Seal Repair Mixer seal unit was successfully repaired & pressure tested to 120 psi at Robco. Turned around in 5 days due to chemical plant losing production. Work Rendered for Repair Mixer seal unit sent in to Robco repair facility. The product end stationary Silicon carbide seat was chipped out. Mixer seal shaft required re-machining & polishing on o’ring sealing surfaces. The rotary high pressure Carbon seal faces required relapping & stationary seat housings to be re-machined & polished on o’ring sealing surfaces. Mixer seal unit was re-assembled & pressure tested. Mixer seal unit boxed up for return to customer.