John Crane

John Crane

John Crane is a global leader in engineered sealing technology, specializing in mechanical seals, seal support systems, filtration equipment, and couplings for rotating machinery used across the oil & gas, petrochemical, power generation, and water treatment industries. Since 1917, John Crane has engineered seals that reduce fugitive emissions, extend mean time between repairs, and protect pumps, compressors, and mixers operating in demanding, high-temperature, and high-pressure process environments.The company’s cartridge seal platforms, API 682-compliant designs, and dry gas seal systems are trusted across refineries, LNG facilities, and desalination plants worldwide. Seven Star LLC is a trusted supplier of John Crane sealing solutions in Oman and the GCC, helping regional plant operators improve rotating-equipment reliability, cut unplanned downtime, and meet strict safety and environmental compliance requirements.

Browse John Crane products by category: Pumps.

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John Crane Type 1 Elastomer Bellows Mechanical Seal Supplied by Seven Star LLC

John Crane Type 1 Elastomer Bellows Mechanical Seal

John Crane

In stock

John Crane 5610 Cartridge Mechanical Seal Supplied by Seven Star LLC

John Crane Type 5610 Cartridge Mechanical Seal

John Crane

In stock

John Crane Product Range at Seven Star

Browse John Crane products we supply by category:

Request a Quote for John Crane Products

Looking for John Crane parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine John Crane products for customers across Oman and the GCC and replies with a formal quotation.
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Frequently Asked Questions

How do John Crane mechanical seals help reduce fugitive emissions in process plants?
John Crane cartridge seals use precision-lapped faces and low-emission designs that limit process fluid leakage past the shaft, helping refineries and chemical plants meet EPA and API 682 emissions targets.
Can John Crane cartridge seals be retrofitted into existing ANSI or ISO pump seal chambers?
Yes, the Type 5610 universal cartridge seal is designed to fit standard ANSI, ISO, and DIN seal chambers, simplifying installation without machining the pump housing.
Are John Crane seals suitable for high-temperature and high-pressure hydrocarbon service?
Many John Crane seal series are rated up to 400°F/205°C and 300 psi(g), with API 682 Category 1 and 2 variants engineered specifically for hydrocarbon and refinery duty.
What industries commonly rely on John Crane sealing technology?
John Crane seals are widely used in oil and gas production, refining, petrochemicals, power generation, and water and wastewater treatment, wherever rotating equipment needs a reliable, leak-free seal.
Does Seven Star LLC supply genuine John Crane products in Oman?
Yes, Seven Star LLC is a trusted supplier of John Crane mechanical seals and sealing systems across Oman and the wider GCC region.