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Home   |   Case Studies   |   £140,000 of problems eliminated in four days

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£140,000 of problems eliminated in four days

Just four days to solve a John Crane vessel seal problem behind three unnecessary seal changes that had created £20,000 repair and £120,000 production costs over the previous three months.

Client challenge

A thermoplastics manufacturer’s protracted problems with a coaxial seal cartridge on a critical stainless steel production vessel created significant production problems.

The NASH team was asked to identify and eliminate the cause of three sequential failures involving a John Crane T151 Coaxial Cartridge in as many months.

Our response

The unit reached us on a Friday. We stripped and inspected it immediately to find that:

  • Poor wedge ring manufacture caused the inboard stationery seal ring to fracture into six parts

Over the weekend, we:

  • Repaired the cartridge with new inboard and outboard stationery faces
  • Fitted new elastomers, springs and fasteners
  • Re-surfaced the rotary seal ring with chrome oxide; the ring was also lapped

Benefits

  • The unit was tested, back on site, fitted and re-commissioned by Monday lunchtime
  • The performance of a critical production vessel was restored
  • Unnecessary repair costs and production losses were eliminated
  • Further high costs were avoided
  • Unnecessary future seal changes were eliminated
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  • enquiry@nashseal.com
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  • NASH Mechanical Seal Services Ltd, Nile Street, Bolton, Lancashire, BL3 6DW, England
    Company Registration Number: 01803027

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