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JOHN CRANE VESSEL AND AGITATOR MECHANICAL SEALS

Vessel, mixer and agitator seals

Elevating safety and efficiency across diverse industries.

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Vessel Agitator Overview 800X600 1

Overview

John Crane’s vessel, mixer and agitator seals are engineered to protect mixers, reactors and other types of reaction vessels from leaks, contamination and equipment failure.

These specialised mechanical seals for mixing vessels are crucial for maintaining the integrity of sensitive processes by providing a reliable barrier between the internal environment of the equipment and external factors.

Investing in high-quality industrial seals will also prevent the need for expensive repairs or replacements later on.

WHY JOHN CRANE

Why choose our vessel, mixer and agitator seals?

Across industries such as chemical, pharmaceutical, pulp and paper, and food and beverage, operators must ensure safety, regulatory compliance standards, long-term asset performance and sustainability.

Investing in high-performance agitator seals helps prevent costly repairs, premature equipment wear and contamination risks. Our vessel and agitator mechanical seals enhance equipment safety while complying with strict industry standards such as ISO 9001:2008 certification and FDA requirements for wet food contact applications.

Featuring cutting-edge dry-running mechanical seal technology and optional hygienic design features, our agitator shaft seals maintain product purity in mission-critical pharmaceutical processes.

From a single mechanical seal agitator to a double mechanical seal for agitators, our solutions deliver reliability, high performance and regulatory compliance in your mixer and agitator reaction vessels.

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John Crane Performance Plus™

John Crane Performance Plus™ is our modular service framework, supported by the largest mechanical seal service network, with over 200 manufacturing, sales and service centres globally. That means we are where you need us, when you need us – empowering people, plant and performance.

More about our John Crane Performance Plus™ service solutions
FREQUENTLY ASKED QUESTIONS

Common questions

What is vessel sealing?

Vessel sealing is the process of using specialised mechanical seals to prevent leakage, contamination and pressure loss in mixers, reactors and processing vessels. John Crane’s vessel and agitator mechanical seals create a reliable barrier between process media and the external environment, ensuring purity, safety and long-term equipment performance.

What are vessel seals used for?

Vessel seals are used to protect industrial mixing vessels, reactors and tanks from leaks, contamination and equipment damage. John Crane vessel and agitator seals maintain process integrity in chemical, pharmaceutical, food and beverage, and pulp and paper applications, ensuring consistent product quality and compliance with regulatory standards.

What is an agitator seal?

An agitator seal is a mechanical sealing device installed on the shaft of mixers and reactors to prevent process leakage during operation. John Crane’s agitator seals, including single and double mechanical seal options, are engineered for durability, hygiene and efficiency, supporting demanding industrial and pharmaceutical mixing environments.

How do agitator seals work?

Agitator seals work by creating a controlled sealing interface around the agitator shaft, preventing product leakage while allowing the shaft to rotate smoothly. John Crane’s agitator mechanical seals stabilise seal faces, manage pressure and resist wear, delivering reliable performance in abrasive, corrosive and hygienic mixing processes.

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