The 200 Series one-piece impeller/shaft sleeve design not only extends the life of seals, but it reduces the number of shaft seal sizes to one, resulting in a minimum spare parts inventory requirement. These stationary seals are designed to last longer with a siliconized carbon (standard) lapped seat that is replaceable and reversible. This provides an excellent mating surface for the variety of rotary seals including food grade hard carbon, siliconized carbon, silicon carbide and tungsten carbide. No matter how demanding your application, there’s a Waukesha seal that’s tough enough to handle it. Waukesha’s pump offering includes eight sizes of pumps from 4.5” (114 mm) to 10.5” (267 mm) impeller diameter. All use the same size seal.

Combination Seal Options:

• Single external mechanical seal
• Single mechanical with a water cascade
• Double mechanical seal

Elastomer Material Options:

• Fluoroelastomer (FKM) O-Ring Standard
• EPDM
• Silicone
• Perfluoroelastomer (FFKM)

Example Mechanical Seal Options:

• John Crane Type 8-1 (inside mounted seal)
• John Crane Type 8B2 (outside mounted seal)
• John Crane Type 8-1 Double Seal
• John Crane Type 9 (inside mounted seal)
• John Crane Type 9 Double Seal
• John Crane Type 21 (inside mounted seal)
• John Crane Type 21 (Double seal)
• Chesterton 440 (outside mounted seal)
• Chesterton 880 (inside mounted seal)
• Flowserve/Durametallic Type “CRO” Double Seal
• Flowserve/Durametallic Type “RA” (externally mounted seal)
• Flowserve/Durametallic Type “RO” (internally mounted seal)

An optional water cascade attachment is available for handling products that tend to crystallize. It also protects the seal against overheating due to high vacuum conditions or high product temperatures.  For particularly adverse applications, 200 Series pumps are also available with an external balanced seal with replaceable silicon carbide mating surface. The water-cooled rotary double seal (Double Mechanical Seal Cutaway) features two seals fully enclosed with a stainless steel seal housing. Water or other suitable coolant circulates through the housing under moderate pressure to cool the seal surfaces. Higher coolant pressures may be used to assure proper interface between product seal face and products which have a tendency to solidify or otherwise denature when in contact with hot, rotating surfaces.

Contact SPX FLOW for specific recommendations and other commercial seal types available.