Pharmaceutical

Our products and services emphasize precision, purity, and safety, adhering to the needs of pharmaceutical customers.

VRA seals

The VRA is an outside-mounted, dry-running single pusher seal designed to operate on top-entry agitators and mixers. Self-lubricating carbon or filled PTFE seal faces run completely dry without cooling.
Cost savings provided by contacting dry-running design and two-piece collar, which respectively eliminate the need for a buffer fluid system and expensive alloys in non-wetted areas

VRA seals

  • Optimized for high run-out requirements — up to 3.81 mm (0.150 in) FIM
  • High reliability provided by flexible rotor design that compensates for misalignment and double O-ring mounted stator that prevents distortion
  • Reduced downtime facilitated by optional sanitary gland that allows steam cleaning and sterilizing of the seal’s interior while mounted on the equipmen.

Specifications

  • Press: vacuum to 13.8 bar (200 psi)
  • Temp: to 121°C (250°F)
  • Speed: to 350 rpm
  • Sizes: 25 to 178 mm (1.000 to 7.000 in)
  • Refer to literature FSD167 at flowserve.com/library.
MD-200 mixer seal

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Top entry, dry contacting mixer seals
Equipment Type

    • Mixers, agitators, blowers, fans
      Operating Parameters
      Pressure vacuum to 6.7 bar (100 psi)
      Temperature -40 to 150°C (300°F)
      Speed up to 1.5 m/s (5 fps)
      Shaft Sizes 40 to 220 mm
      (1.575 to 9.000 inch)
      Features

    • Dual pressurized gas barrier seal with contacting
      seal faces

    • Product side seal has reverse pressure capability

    • Dry-running for minimized product contamination
      from barrier fluid

    • Product side seal has reverse pressure capability

    • Features self-lubricating faces

    • Cooling flange for higher temperatures up to 200°C
      (390°F) available

    • Available with or without bearing

    • Optional debris well at inboard seal

    • Dimensions and flange connections to DIN
      for steel or glass lined flanges
      MD-100

    • Available for steel or glass lined vessels
      Other Configurations
      MD-200 DIN

    • Single dry running seal

MW-200 mixer seal

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Top entry, wet mixer seals
Equipment Type

    • Mixers, agitators, filters, filter dryers
      Operating Parameters
      Pressure vacuum to 35 bar (500 psi)
      Temperature -40 to 200°C (390°F)
      Speed up to 4 m/s (13 fps)
      Shaft Sizes 40 to 220 mm (1.575 to 9.000 inch)
      Features

    • Liquid lubricated seal

    • Product side seal has reverse pressure capability

    • Balanced dual pressurized seal

    • Cooling coil options for higher temperatures available

    • Available with or without bearing

    • Cooling flange for higher temperatures up to 300°C
      (570°F) available

    • Available with or without bearing

    • Designed for steel or glass lined vessels
      Other Configurations
      MW-200 DIN

    • Dimensions and flange connections to DIN for steel or glass lined flanges

Mixerpac

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The Mixerpac family of mixer seals is designed for top-, side- and bottom-entry installations. Configurations available for slurry, sterile, high-pressure or large shaft movement applications.

Broad application flexibility owing to modular cartridge construction with and without bearing as well as liquid-lubricated and gas lift-off designs

    • Extended seal life due to reduced friction and wear from balanced dual-pressurized design and seal faces optimized through FEA

    • Reliable operation and improved safety with available reverse-pressure capability and emergency sealing solutions

    • Numerous options, including cooling flange and sanitary gland/debris catcher, for applications requiring steam cleaning
      SPECIFICATIONS
      Press: vacuum to 250 bar (3600 psi)
      Temp: to 200°C (390°F)
      Speed: to 10 m/s (33 fps)
      Sizes: 25 to 365 mm (1.000 to 14.400 in)
      Refer to literature FSD104 at flowserve.com/library.

    • Balanced dual pressurized seal

    • Cooling coil options for higher temperatures available

    • Available with or without bearing

    • Cooling flange for higher temperatures up to 300°C
      (570°F) available

    • Available with or without bearing

    • Designed for steel or glass lined vessels
      Other Configurations
      MW-200 DIN

    • Dimensions and flange connections to DIN for steel or glass lined flanges

ML-200 mixer seal

Top entry, lift-off mixer seals Equipment Type

  • Mixers, agitators, filters, filter dryers
    Operating Parameters
    Pressure vacuum to 6.7 bar (100 psi)
    Temperature -40 to 200°C (390°F)
    Speed up to 10 m/s (33 fps)
    Shaft Sizes 40 to 220 mm (1.575 to 9.000 inch)
    Features
  • Noncontacting, lift-off gas barrier seal
  • Advanced lift-off technology avoids wear from
    seal face contact
  • Barrier leakage does not affect product quality
  • Low drag design for the dynamic O-ring (no hang-up)
  • Operates with a simple gas barrier support system
  • Optional with or without bearing
  • Cooling flange for higher temperatures up to 300°C (570°F) available
  • Sanitary gland option for sterilization purposes
  • Available for steel or glass lined vessels Other ConfigurationsML-200 DIN
  • Dimensions and flange connections to DIN for steel or glass lined flanges
  • Available with or without bearing

MSS mixer split seal

The MSS is for tough mixer and vessel applications where stuffing box face, bore and OD run-out are extreme. Typically used on older equipment or where compression packing had been used.
Easy installation, inspection and maintenance facilitated by outside seal arrangement and split design

  • Fits in tight spaces with no equipment tear down; can be installed in cramped stuffing box areas where the bearing housing, gear box or coupling create obstructions
  • Reliable operation owing to self-lubricating faces and design that dissipates heat from seal faces, which allows it to run dry or wet
  • Product purity ensured by design that compensates for pressure reversals

SPECIFICATIONS

Press: vacuum to 7 bar (100 psi)
Temp: to 150°C (300°F)
Speed: to 1740 rpm
Sizes: 25 to 305 mm (1.000 to 12.000 in)
For more information, refer to FSD162.

ISC2 seals

The ISC2 Series provides exceptional reliability and standardization over a wide variety of industrial applications and equipment. Available in single and dual arrangement, pusher and metal bellows types.

  • Lower total cost of ownership from advanced seal design features that enable superior reliability
  • Broad application flexibility assured by comprehensive range of pre-engineered configurations and materials; custom solutions also available
  • Reduced operating costs via standardization to ISC2 Series, which enables less inventory, greater flexibility, less downtime and longer seal life
  • Increased plant and personnel safety delivered by cartridge security and compliance with all major international standards

SPECIFICATIONS

Press: pusher to 20.6 bar (300 psi); bellows to 13.8 bar (200 psi)
Temp: -40°C to 204°C (-40°F to 400°F)
Speeds to: 23 m/s (75 fps)
Sizes: pusher 25 to 200 mm (1.000 to 8.000 in);
bellows to 95 mm (3.750 in)
Refer to literature FSD243 at flowserve.com/library.

ISC2-MW seal

The ISC2-MW is a dual-arrangement standard cartridge pusher seal engineered for reliable, cost-effective operation in mixer service.

  • Reduced installation and maintenance costs assured by economical cartridge seal design for top-entry installation
  • Increased uptime resulting from volute groove, which significantly increases barrier fluid flow to promote cool running, even at mixer speeds
  • Reliable operation ensured by ISC2 thermal management technology that allows the seal to run cooler and tolerate dry-running events

SPECIFICATIONS

Press: to 6.9 bar (100 psi)
Temp: -40°C to 204°C (-40°F to 400°F)
Speed: to 1.1 m/s (3.5 fps)
Sizes: 25 to 200 mm (1.000 to 8.000 in)
For more information, refer to FSD104.