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Robco of America
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Two 72mm Burgmann cartridge seals sent in to Robco of America’s Texas repair facility for failure analysis and overhaul under emergency basis. These seals came in from a chemical plant in Pasadena Texas. End user stated the seals operated for 6 months before failure. Upon inspection it was found that the Silicon Carbide rotary seats cracked close to the drive pin slots. Robco re-designed the drive pin slots to allow for an increased radial wall thickness around the slots to reduce the risk of future failure. New Silicon Carbide seats were produced in 4 working days.

In between time Robco machined new Carbon stationary seal faces that had a 20% wider lapped face. Reason for this modification was due to carrying out a stress analysis on the seal faces under operating conditions which found the Carbon faces were generating too much face load against the rotary Silicon carbide seal seats. The o’ring sealing surfaces in all the metal parts were polished to 32 RMS finish or better. Seals re-assembled and pressure tested to 60 PSIG for 20 minutes – no pressure drop.

http://www.robcomechanicalseals.com/mechanical-seal-repair.asp
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MECHANICAL SEAL REPAIR / REPLACEMENT FOR THE MARINE INDUSTRY
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Reactor Seal Repair for Chemcial Plant in Texas

95mm glass lined double reactor seal sent in for repair from chemical plant in Texas. Unit had Silicon Carbide vs Silicon Carbide (inboard & outboard), Teflon encapsulated o'rings product side & Kalrez / Viton outboard. The product end rotary Silicon face was broken & jammed in the rotary housing. Upon inspection we found the drive lugs in the rotary metal holder were sheared off. A new Silicon face + 316 stainless holder required. The glass lined flange was cleaned up & painted. All metal parts cleaned, polished & re-machined as required. Mechanical Seal unit was reassembled & pressure tested to 100 psig. This job was turned around in 1 week.

#reactorseal #reactorsealrepair #mechanicalseal

http://www.robcoamerica.com/reactor-agitator-mixer-screw-pump-seal-repair.asp
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Reactor Seal Repair for Chemical Plant in Texas
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This Choke Valve was sent to Robco of America from a chemical plant in Texas. Customer cannot source a replacement unit and asked us to see if it could be salvaged. The inner bore was severely washed out and could not be welded & rebored. The neck and flange portion was cut off and a new one piece neck and flange was machined. The valve also incorporates a SILICON CARBIDE inner wear bushing. We had a new one manufactured with a thicker wall thickness than the original one to give extended run cycles. New neck and flange was welded onto the valve body and painted up.

http://www.robcoamerica.com
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Vonk Choke Valve Overhaul
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50mm custom designed double cartridge seal with Tungsten vs Silicon faces to handle abrasive product.

#cartridgeseal   #mechanicalseal   #robcoofamerica  

http://www.robcoamerica.com/mechanical-seals-chemical-industry.asp
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3.00” custom designed outside mounted cartridge seals for high temp. / high pressure application.

#cartridgeseals   #mechanicalseals   #robcoofamerica  

http://www.robcoamerica.com/mechanical-seals-chemical-industry.asp
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40mm custom designed Duplex Stainless cartridge seal to handle abrasive, corrosive application.

#cartridgeseal   #mechanicalseal   #robcoofamerica  

http://www.robcoamerica.com/mechanical-seals-chemical-industry.asp
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Before and after. 

After single spring cartridge seal repair. 1.937" Robco EV04 single spring cartridge seal repaired for Fuel Oil #6 circulating pump operating in fuel depot in New York.

http://www.robcoamerica.com/mechanical-seal-repair.asp

#mechanicalsealrepair   #cartridgesealrepair  
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Mechanical Seal Repair
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Before and after. 

1.75” J.C. Safematic cartridge seal repaired in 24 hrs. under emergency basis due to refinery shutdown in Louisiana.

http://www.robcoamerica.com/mechanical-seal-repair.asp

#mechanicalseal   #cartridgeseal   #cartridgesealrepair  
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Mechanical Seal Repair
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Before and after.

3.00" double seal assembly repaired for Texas oil refinery.

http://www.robcoamerica.com/mechanical-seal-repair.asp

#mechanicalsealrepair   #mechanicalseals   #assemblyseals  
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Assembly Seal Repair
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3.00” EV17 outside mounted mixer tank seal with modified gland repaired for Baytown chemical plant.
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EV17 Mixer Seal Repair for Chemical Plant
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