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• RDT-37 Mechanical Seal

Tandem pusher seal (API 682, Type A) 

Description

Cartridge mechanical seals of RDT family are designed for sealing heavy and light hydrocarbons, including VOCs, and other hazardous and chemically aggressive fluids at oil refineries and petrochemical plants, gas plants, chemical plants, power plants. RDT-37 seal is an o-ring tandem seal to be used with API Plan 52.

RDT-37 family seals are used for the same applications as the followings seals:
H7/H75 by Burgmann Germany
QBQ by Flowserve, USA
8B/59/58 by John Crane, USA
MS spring family by EKK Eagle, Japan

Advantages

• RDT mechanical seal has a classical, proved by years, design that is used for sealing light hydrocarbons such as liquefied hydrocarbon gases, wide fraction of light hydrocarbons, petrol, reflux, etc. Such applications are challenging - seal rings tend to deform because of high pressure and heat buildup. This can lead to minor leakage or change of phase of low-boiling product (boiling or frosting). RDT-37 seal design provides optimum hydraulic balance and contact pressure thus contributing to stable operation and long service life of seal rings.
• Seal rings are made from the proven high-performance materials – impregnated carbon graphite, silicon carbide, and tungsten carbide.
• Springs are made from Hastelloy C to eliminate the possibility of corrosion cracking.

See also: 

• SD - Dual cartridge welded metal bellows mechanical seal, for high temperature applications
• SO - Single cartridge welded metal bellows mechanical seal, for high temperature applications 
• RDT-48A - Tandem o-ring mechanical seal, for high pressure applications 
• SDVT - Tandem cartridge welded metal bellows mechanical seal with stationary o-rings, for chemical applications 
• RO - Single cartridge o-ring mechanical seal

 Download brochure (PDF file, 169.6 KBytes)

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