Type 32D Vessel & Agitator Seals | Mechanical Seals | John Crane

Type 32D

Single Dry-running Mixer and Agitator Seal Suitable for Explosive Atmospheres

Type 32 D vessel seals are outside-mounted, balanced single seals with self-lubricating seal faces. Neither external cooling, lubrication equipment nor a supply system is required. The design and material selection meets the needs of the pharmaceutical and chemical processing industries. The seals are excellent for low-duty mixing applications and operation in vacuum conditions. The seal can be supplied in component form consisting of spring-loaded face, driver retainer and mating ring, or pre-assembled on a flange. The flange version can be equipped with a debris well, enabling it to capture face wear particles, preventing the contamination of process fluid. Standard flange designs are available with dimensions to DIN 28138 Parts 1 and 3. Customized flanges available on request.

All versions are suitable for application in potentially explosive areas without any further control device. Certificates of conformity according to European Directive 2014/34/EU (ATEX) Cat. 1, 2 and 3 available on request. Depending on operating conditions and temperature class of the application, operating limits can be restricted.



  • California Residents: PROPOSITION 65 WARNING
  • Single O-ring mixer seal for top entry vessels.
  • Outside-mounted, dual-balanced design.
  • No external lubrication required.
  • Reverse pressure design (applied for high pressure and vacuum).
  • Robust T-bar drive mechanism for high-torque transmission.
  • Mechanical wear indication.
  • Standard sizes from 25mm to 125mm shaft diameter.
  • Standard design options: component seal with standard flange (according to DIN); component seal with flange and debris well.
  • Suitable for application in explosive areas. Certificates of conformity according to European Directive 2014/34/EU (ATEX) Cat. 1, 2 or 3 on request.

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