Multi Spring Seals
Multi spring mechanical seals are an extremely common sale for Harbor Seal and can be produced fairly quickly.
The routine sealing success of the multi spring mechanical seal derives from their life span as well as their multi spring configuration which will ensure that pressures exerted from the rotating face are evenly distributed against the seating face, preventing irregular and premature seal failure.
The John Crane type 8 series can handle a majority of applications, but it must yield to the type 9 when chemicals and other corrosive liquids are being processed because it lacks the PTFE wedge technology that the type 9 utilizes. The type 9 can be overkill in many applications, in which case the type 8 series would be a more cost effective and compatible option.
The Flowserve Dura Metallic series VRA/PTO/CRO/RO are an externally mounted, dry-running seals designed for top entry agitator and mixer equipment.
John Crane Type 8 Series
Standard Specifications:
Pressure: 10 bar (150 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Balance Specifications:
Pressure: 30 bar (435 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 25 m/s (5000 fpm)
Thin Specifications:
(Thin Not Pictured)
Pressure: 10 bar (150 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Thin/Balance Specifications:
(Balance & Thin Not Pictured)
Pressure: 30 bar (435 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
John Crane Type 9 Series
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Specifications:
Pressure: 10 bar (150 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Balance Specifications:
(T9 Not Pictured)
Pressure: 20 bar (300 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 25 m/s (5000 fpm)
Thin Specifications:
Pressure: 10 bar (150 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Thin/Balance Specifications:
Pressure: 20 bar (300 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 25 m/s (5000 fpm)
Dura/Flowserve Series
Specifications:
Pressure: 14 bar (200 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Specifications:
Pressure: 10 bar (150 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Specifications:
Pressure: 41 bar (600 psig)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)
Specifications:
Pressure: 20 bar (300 psi)
(Pressure ratings are dependent on seal shaft size)
Temperature: -40 to 204°C (400°F)
(Temperatures are dependent on elastomer selection)
Speeds: 22 m/s (4500 fpm)