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John Crane | Mechanical Seals

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Atlantic Pump offers the vast selection of  +mechanical seals in Maine. John Crane mechanical seals are suited for various applications that require low emission, high performance petroleum seals, vessel seals and agitator seals, heavy-duty slurry seals and a variety of elastomer, formed and metal bellows seals.  As a factory-trained distributor stocking John Crane products, Atlantic Pump supplies local inventory and support.

John Crane’s history dates to the 1917 founding of the Crane Packing Company. In 1949, John Crane designed the world’s first automotive mechanical seal. Soon after that, the John Crane Type 1, end-face, elastomer bellows shaft seal was developed. The patented John Crane Type 1 seal revolutionized sealing technology, and even today is one of the most widely used seals in the industry. John Crane is now part of Smiths Group.

Atlantic Pump specializes in these John Crane products:

John Crane Seal

  • Dry Gas Mechanical Seals
  • Metal Bellows Mechanical Seals
  • PTFE Bellows Mechanical Seals
  • Split Mechanical Seals
  • Elastomer Bellows Mechanical Seals
  • Non-contacting Mechanical Seals
  • PTFE Wedge Mechanical Seals
  • Vessel and Agitator Mechanical Seals
  • Labyrinth Mechanical Seals
  • O-Ring Pusher Mechanical Seals
  • Slurry Mechanical Seals

The Atlantic Pump Advantage:

Atlantic Pump distributes the widest selection of seals available, providing the right seal solution for nearly any application. Atlantic Pump delivers matchless performance, with reduced installation times and lower maintenance costs. Our well stocked warehouse allows us to rapidly ship the seals you need.

Primary Industry Applications for John Crane Pumps:

Petroleum, Power Generation, Chemical, Pharmaceutical, Mining and Minerals, Food & Beverage, Pulp & Paper Processing, Refrigeration Compression, Water & Wastewater.

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John Crane Key Product Lines:

Dry Gas Mechanical Seals are non-contacting, dry-running mechanical seals that are engineered to avoid contaminating a process. Dry gas mechanical seals offer superior performance in rugged working environments including oil and gas exploration, extraction and refining, general petrochemical industries, gas transmission, and chemical processing.

Metal Bellows Mechanical Seals allow for less clogging and increased flow rates compared to traditional spring seals. John Crane uses bellows technology to create a uniform outside wall, which allows uniform movement under hydraulic pressure. John Crane’s metal bellows mechanical seals are known for tight tolerances, reliability, and suitability for harsh media.

PTFE Bellows Mechanical Seals are proven extremely reliable in highly corrosive applications. These seals are suited for salts, strong oxidizing agents, high acid concentrations, strong reducing agents, and organic compounds that are chemically active.

Split Mechanical Seals combine the unique design requirements for wet-running and dry-running services into a single seal platform, using the most current modular split seal technology.

Elastomer Bellows Mechanical Seals are compatible with a wide range of service conditions. Applications for this industry workhorse range from steam and water to corrosive materials and chemicals.

Non-contacting, Gas lubricated Mechanical Seals combine the benefits of very low ownership cost and extreme durability of seal design.

PTFE Wedge Mechanical Seals are designed for corrosive applications such as chemical processing or hydrocarbon processing. These seals include DIN seals for general, low, medium and high pressure duties as well as graphite-based wedges for corrosion resistance or high temperatures. Alternative seal designs options are available for various operating conditions.

Vessel and Agitator Mechanical Seals from John Crane are designed for various applications. These applications include single dry-running mixer and agitator seals suitable for explosive atmospheres as well as modular, high-performance, agitator seals for glass-lined vessels. DIN vessel seals are available for DIN vessel and agitator applications for the chemical and pharmaceutical industries.

Labyrinth Mechanical Seals feature long life and a notable lack of friction, which aids in preventing seal leakage. Many gas turbine engines with high rotational speeds and pistons use labyrinth mechanical seals to store oil as well as to seal against high pressure.

O-Ring Pusher Mechanical Seals include single cartridge pusher seals for refinery applications that help prevent emissions leakage. Other o-ring pusher mechanical seals include Type 8B1, preferred for reliable, safe, un-pressurized tandem and pressurized dual-seal arrangements in petroleum services. For additional safety, high-performance, low-emission cartridge seals are available.

Slurry Mechanical Seals are manufactured for the harshest abrasive slurry environments. The unique design allows the seal to operate without a flush, which reduces total ownership cost.

Additional Resources:

+Mechanical Seal Maintenance Simplified

+Do you have a Pump Reliability Program?