- Equipment
- Mixing Systems
- Mechanical Seals
Mechanical Seals
DDPS offers three types of mechanical seals to complement your mixing system:OptiSeal
QW Seals
JC Seals
OptiSeal
OptiSeal Advantages

- No carbon dust contamination, eliminates process contamination from mechanical seal face wear. True dry-running design, balanced double cartridge seal, can be run with a barrier fluid.
- GMP compliant
- Minimal maintenance after installation
- Cost Effective
- CIP/SIP
- Lowest possible consumption/leakage rate of nitrogen to process/atmosphere versus all other double seal technologies.
OptiSeal Specifications

- Pressures from full vacuum to 100 psig (4.6 bar)
- Temperature from -20°F to 350°F (-29°C to 177°C).
- 0 to 1.0 SCFH/inch of shaft diameter leak rate is possible
Options
- FDA compliant materials
- Sizes available for competitors' designs
Watch our instructional videos on OptiSeal assembly and disassembly
QW Seals
QW Seal Product Description
The QW seal was originally designed as a lubricated seal, it has been modified to a dry seal.QW Seal Features
- Carbon/Ceramic material of construction for the face
- Choice of Teflon encapsulated Viton, Kalrez, or Viton o-ring
- Non-wetted metallic parts are constructed of stainless steel
QW Seal Specifications
- 50 psig (3.3 bar) maximum pressure limit
- 350ºF (175ºC) maximum temperature limit
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JC Seals
JC Seal Product Description
The JC seal is a dry seal intended for higher pressure applications. It is an excellent design for extended seal life.JC Seal Specifications
- 50 psig (3.5 bar) maximum pressure limit
- 350ºF (175ºC) maximum temperature limit
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OptiSeal Assembly and Disassembly Videos
OptiSeal Assembly
OptiSeal Disassembly