Mechanical Seals

PILLAR is a leading seal manufacturer, offering a comprehensive range of mechanical seal types designed for diverse applications—ranging from lightweight cartridge seals to heavy-duty, mission-critical seal units, complete with API 682 piping components. Since the 1970s, PILLAR has been a pioneer in sealing technology in Japan, introducing practical dry gas seal technology for the first time.

Over the years, we have continually expanded our expertise to cover a wide array of applications, including blowers, liquid seals, containment seals, and more. Our commitment remains steadfast in solving customer challenges with advanced sealing solutions, ensuring reliability and optimal performance across all industries.

Features
  • Excellent Sealing Capability
  • Long Life Span with Minimum Maintenance
  • API 682 Compliant for Oil & Gas Application
  • Great Performance in Severe Operating Condition

PILLAR Engineered Seal

Our API Seals are custom-engineered to meet the demanding requirements of the oil and gas industry, designed to withstand extreme pressures and temperatures. More than just components, they play a crucial role in ensuring operational continuity and environmental compliance. Built to API and ANSI standards, these heavy-duty seals deliver reliable, tailored performance for your specific needs.

FEATURES
  • Ensures stable sealing under high velocity, pressure, and fluctuation
  • Features a bilaterally symmetrical floating ring for pressure fluctuation
  • Static type structure suitable for extremely high load conditions

Cartridge Seal with Knife Edge Technology

Our Knife Edge Seals outperform conventional mechanical seals in handling high-viscosity liquids. Featuring a narrow face width, they effectively prevent liquid accumulation and cut through coagula, maintaining a tight seal against the shaft. Designed to generate minimal heat while providing superior heat dissipation, these seals offer enhanced cooling and sealing performance, making them a reliable solution in demanding conditions.

FEATURES
  • Highly Reliable Static Seal Design: Features an integrally designed sleeve that avoids shaft wear and ensures stable, long-term performance.
  • Superior Material Choice: Utilizes Silicon Carbide (SiC) for the seal face, offering excellent wear resistance, chemical resistance, and extended service life.
  • Four-Action Installation: Designed for easy installation without prior assembly experience, simplifying the replacement process.
  • Diverse Product Lineup: Includes various models like type GAKEM for knife edge sealing, type GABE5 for high pressure, type GXKEM for high-concentration slurry, and a tandem seal type for specialized applications.

Phoenix-Seal™

The PILLAR Phoenix-Seal utilizes advanced aerodynamic technology to provide exceptional containment in critical applications. This innovative non-contact dry gas seal leverages dynamic pressure generated by grooves on the rotating ring to maintain a micro-scale gap, reducing leakage to less than 0.1% compared to traditional seals. Operating without physical contact, it minimizes power consumption and extends service life, while remaining lubricating oil-free for superior performance and reliability, particularly in emergency situations.

FEATURES
  • Multi-Groove Design: multiple independent grooves that support bidirectional rotation, enhancing dynamic pressure retention, which boosts reliability and safety.
  • Automatic Gap Adjustment: Utilizes a dynamic pressure mechanism that automatically adjusts the gap width to maintain a balanced state, continuously floating the seal ring by several micrometers.
  • Aerodynamic Non-Contact Mechanism: engraved grooves on the rotating ring to generate dynamic pressure, keeping the seal ring floating minimally to drastically reduce liquid leakage—less than 0.1% compared to labyrinth seals.
  • Energy Efficient and Durable: Maintains a non-contact state during operation to minimize motive power consumption. Also features lubricating oil-free operation and a prolonged service life, emphasizing efficiency and sustainability.

Aerostatic Dry Gas Seal Type PEC

The PEC Seal uses barrier gas—such as nitrogen or dry air—supplied externally to establish a static pressure barrier. This system maintains a floating gap of several to tens of micrometers between the seal faces, reducing leakage to just 1/1000th of that found in labyrinth seals. With automated gap control for enhanced reliability, the PEC Seal is ideally suited for high-speed applications in dispersers, blowers, compressors, and mixers. Engineered to support high-speed rotations without wear debris, the Type PEC seal ensures cleanliness and safety, making it perfect for industries handling sensitive or hazardous materials.

FEATURES
  • Completely sealed with a single seal: Process gas is completely sealed with a single seal. Not only does this product contribute to ensuring safety and environmental friendliness.
  • High level of cleanliness: Compared to double mechanical seals and dry-contact seals, which have been conventionally used as shaft seals for gases, this product does not leak confined liquid into the process side or produce wear debris.
  • Wide speed range: This product can continuously retain its seal face in a non-contact state and can therefore handle various shaft states from a stopped state through to a high-speed rotation state.
  • Long service life: This product maintains its seal face in a non-contact state and therefore protects the seal face from wear and damage, extending service life.

View more information in our catalogs, or view all available products below.