A wide variety of double mechanical seal options are available to you, such as metal, rubber. Read more about reasons why mechanical seals self-destruct on our blog. In … Choose from newsletters on Sealing, Lubricants/MRO, and Protective Coatings. Between these two surfaces is a fluid film generated by the pumped product. Browse John Crane's mechanical seals, including single and double mechanical seals, for pumps, compressors, turbines and more. Part 4: How to Select the Best Barrier/Buffer Fluid for Your Application Mechanical seals according to EN 12756 (code system) For single mechanical seals there is a distinction drawn between standard (N) and short (K) types. Therefore, it may be worthwhile to consider the use of a pump with a mechanical seal that includes another seal as a backup. One of the main reasons to switch to mechanical seals is the drastic reduction in leakage, which in the long term, saves maintenance valuable time and money. double mechanical seals. Part 3: Support Plans for Double/Dual Mechanical Seals Data sheets. An absence of this fluid film (dry running of the pump) results in frictional heat and ultimate destruction of the mechanical seal. hbspt.forms.create({ Manufacturer of Double Mechanical Seal - Compressor Seals, Water Seals, Mechanical Cartridge and Polymer Spring offered by M. M. Engineering, Mumbai, Maharashtra. Subscribe now. The double mechanical seal uses two mechanical seals (an inboard and outboard seal). In case of leakage, the barrier liquid penetrates the product. Double-acting liquid-lubricated mechanical seals are the most common type for mixing applications. Symbols A Area of sliding face A H Area hydraulically loaded by medium pressure b Width of sliding face Mechanical seals tend to leak a vapor from the high pressure side to the low pressure side. The outboard seal prevents the barrier or buffer liquid from getting into the atmosphere. This fluid is typically delivered from a tank to cool and lubricate the seal faces using a piping plan. A double mechanical seal has two primary seals with a barrier or buffer fluid area in between. This arrangement enables the softer seal to wear while maintaining the integrity of the harder faced seal during service. Seal Type 510/D/B Design Incorporate with location of Bearings very close to the Seal. These seals for all intents and purposes dispose of leakage of the fluid or gas being dealt with pumps or mixers. Each primary seal typically consists of a softer, narrower stationary face accompanied by a harder, wider rotating face. This arrangement enables the softer seal to wear while maintaining the integrity of the harder faced seal during service. What's the difference between the two? These seals are increasingly used by companies to meet specific environmental goals or emissions requirements. This website uses cookies to ensure users have the best online experience. Listed manufacturers, suppliers, dealers & exporters are offering best deals for double mechanical seal. This fluid film prevents the mechanical seal from touching the stationary ring. Double mechanical seals are offered in two arrangements: Double mechanical seals are commonly used in the following circumstances: Are you still using packing for your pumps? hbspt.cta._relativeUrls=true;hbspt.cta.load(367944, 'cf1a2f41-c9d3-4823-a1cb-7bd946c7b792', {}); A double mechanical seal consists of two seals arranged in a series. Part 5: Saving Water with Double Seals, Filed Under: Mechanical Seals Tagged With: barrier fluid, buffer fluid, double seals, dual seals, seal environment, sealing safety. The lubricating film is generated by the barrier fluid. Crane Engineering. Mechanical seals and more Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Double Mechanical seal The AESSEAL ® CDP™/CDPN™ range of cartridge mechanical seals has been designed as high-performance sealing solutions for general applications. The outboard, or “secondary seal” prevents the flush liquid from leaking into the atmosphere. Or check all three! The Difference between Single and Double Mechanical Seals, WATER/WASTEWATER TREATMENT EQUIPMENT REPAIR, reasons why mechanical seals self-destruct, differences between packing and mechanical seals, ← Why Applying Band-Aids to Water Booster Systems Doesn't Work, The Difference Between NPSHr and Minimum Submergence →, Failed Mechanical Seal Turns Up Heat On Cold Storage Facility, Leaking Mechanical Seal? © Copyright 2020. Groveland, MA 01834 USA A qualified engineer will help you decide which type of mechanical seal is best for your application. They can be installed back to back, front to back or front to front depending on the application. Privacy Policy. In … The double-mechanical seal construction consists of two self-sufficient seals mounted inside the seal chamber outer surface of the pump, which is flushed with a self-sufficient water supply at a flow rate of around two to four gallons per hour (least amount) and a load is less superior to the highest expected to function pressure of the pumped solution. These seals can be used under nearly all operating conditions in a mixing vessel. There are three typical configurations: There are no hard-and-fast rules for the right configuration. The lubricating film is generated by the barrier fluid. What Is A Dual Mechanical Seal? A template used to list data, information and specifications applicable to a particular item of plant equipment. 1,571 double mechanical seal products are offered for sale by suppliers on Alibaba.com, of which seals accounts for 40%, construction machinery parts accounts for 1%, and adhesive paper & film accounts for 1%. These are available in various technical specifications, range and models as per the precise demands of clients. This is essential when pumping or mixing a dangerous or toxic substance. In this double seal configuration, two narrow seal faces are mounted back-to-back (opposing) to one another. uninterrupted mechanical seal life is to create a healthy environment around the seal faces. info@chesterton.com, Part 3: Support Plans for Double/Dual Mechanical Seals. Double Mechanical Seal Type F Mechanical Seal Hot Sale Burgmann 10T Double Mechanical Waterproof Shaft Seal $5.00-$200.00 1 Piece (MOQ) A double mechanical seal comprises of two seals orchestrated in an arrangement. Double seal. Burgmann H74-D Mechanical Seal called as PC04 are specialized in mechanical seals products. formId: '8ad53f73-042d-439e-b15d-ce48738bb622' With a double mechanical seal, there is both an essential seal to contain the substance of the pump inside and an optional seal to guarantee that … Double mechanical seal is manufactured using best quality components and following international industrial standard. A dual seal allows you to control of all these factors. In case of leakage, the barrier liquid penetrates the product. Fluid Sealing & Equipment Protection Expertise. -ABPN) and eccentric screw pumps ( … Dual mechanical seal About double mechanical seal. The offered seal is widely used in chemical, petrochemical, food processing and pharmaceutical industries. These products build on over a decade of proven performance from the AESSEAL ® CURC™ and CDSA™ range of seals. This arrangement is commonly found in the chemical industry. A double mechanical seal has two primary seals with a barrier or buffer fluid area in between. China Double Mechanical Seals manufacturers - Select 2020 high quality Double Mechanical Seals products in best price from certified Chinese Mechanical Seal manufacturers, Mechanical Components suppliers, wholesalers and factory on Made-in-China.com Being a client-centric organization, we are engaged in manufacturing, exporting and wholesaling Double Mechanical Seal.The offered range comprises GSE-106DB9U, GSE-106DB59U, GSE-106DB59B, GSE-106DB9B and Mechanical Seal.Our offered mechanical seals are used in pharmaceutical, medical, textile, agriculture and allied industries. The correct fluid set-up can also effectively direct the hydraulic load to the inboard or outboard seal to meet operational needs and to increase the life of the seal. This arrangement is commonly found in the chemical industry. This double-mechanical seal configuration consists of two independent seals mounted within a seal chamber outside the pump, which is flushed with an independent water supply at a flowrate of approxi… There are two modes of operation to choose from: Fluid Options So, it's common practice to use a single mechanical seal if the pumped product poses little to no risk to the environment. Piping plans help keep mechanical seals running cool and clean, promote safe handling of dangerous fluids, and extend the operational availability of rotating equipment. Regardless of the configuration, a single-mechanical seal will eventually leak and possibly damage the motor, corrode the surrounding area, or create a waste treatment problem. Double (or dual) mechanical seals are designed to ensure maximum sealing safety. Compare this product Remove from comparison tool This is a popular choice for the food industry, particularly for products which tend to stick. A double mechanical seal has two essential seals with a barrier or buffer fluid area in between. A double or dual mechanical seal consists of two independent seals mounted within a seal chamber outside the pump, which is flushed with an independent supply. These seals virtually eliminate leakage of the fluid or gas being handled in pumps or mixers. Double seals are used when leakage of pumped fluid to the atmosphere is not allowed. Double Mechanical Seal. Learn more about double seal set-up and operation in our upcoming posts. Liquids used fall into several categories: We will address how to select the best fluid for your application in an upcoming post. Double mechanical seals are intended to guarantee maximum sealing safety. Double seals require fluid exchange between the inboard and outboard seal faces. Each primary seal typically consists of a softer, narrower stationary face accompanied by a harder, wider rotating face. Depending on the pressure and seal arrangement, such a system can be used to: The fluid can also be used to remove process and frictional heat. Double seals are a must-have for certain applications in many countries. The lubricating film is generated by the barrier fluid. A double mechanical seal is a type of mechanical seal with two primary seals or sets of faces, it can operate in various arrangements with a) a barrier (containment) between the sets of faces or b) a buffer (mixing).. The arrangements vary from; A Double Mechanical Seal (Barrier) – Dry => is a double seal where the barrier fluid is a gas. Double mechanical seals come in rotary and stationary versions. Two rotating seal rings are arranged facing away from each other. It can combats issues with cavitation and dry running. Learn about our new products and get tips and application solutions. 1-978-469-6810 Brief Description about Double Mechanical Seal Amongst the several types of mechanical seals, double seals are preferred for maximum sealing safety.The seals reduce the possibility of leakage of gas or fluid being handled in mixers or pumps to almost zero. Part 2: Double/Dual Mechanical Seal Arrangement Options hbspt.cta._relativeUrls=true;hbspt.cta.load(367944, '7acee6e2-47b4-4c43-93ef-8c9afa6eb7bf', {}); Water/Wastewater Treatment Equipment Repair, 707 Ford StreetKimberly, WI 54136920-733-4425, 12265 Nicollet AvenueBurnsville, MN 55337800-776-4425. The use of level and pressure meters on support tanks are crucial for both containment and safety. See Dual pressurized seal. Micro Seals are a remarkable organization, engaged in manufacturing, exporting and supplying a superior quality assortment of Agitator Double Mechanical Seal. Mechanical seals are devices that seal machines between rotating parts (shafts) and stationary parts (pump housing) and are an integral part to the pump. We doesn't provide double mechanical seals products or service, please contact them directly and verify their companies info carefully. A dual mechanical seal consists of two seals arranged in a series. If the fluid and its vapors are hazardous to the operator or environment, and MUST be contained, When aggressive media are used at high pressures or temperatures. Seal Type 510/D and 510/D/B Mechanical Seals are designed for Top, Side and Bottom Entry Drives in Agitators and Reactors. }); 860 Salem Street Single seals without connections (-SNO), with flush (-SN) and with quench combined with lip seal (-QN) or throttle ring (-TN) Additional variants available for ANSI pumps (e.g. The mining industry presents a number of challenges for engineers, linked to scarcity of water and high-pressure transfer slurry pump applications. Double mechanical seal (Double acting mechanical seal). The inboard, or “primary seal” keeps the product contained within the pump housing. centrifugal pump with double mechanical seal filed may 14. The spring loaded rotary seal faces are arranged face to face and slide from the opposite direction to one or two stationary seal parts. This establishes the ideal lubrication, temperature, and pressure. All Rights Reserved. A single mechanical seal consists of two very flat surfaces that are pressed together by a spring and slide against each other. This reference book provides a concise Think Twice Before Tightening, 5 Ways To Kill A Mechanical Seal During Installation. If you’ve made the switch from packing to mechanical seals, you understand the positive impact mechanical seals have on your systems. The bottomline is that the double seal option is unmatched in terms of safety, leak/emission-free operation, and Life-Cycle Cost (LLC). Double seals provide a level of safety/zero emissions compliance not possible with single seals. 1959 2 sheets-sheet 2 inventor; david e thomas. If the product is considered “hot”, the barrier liquid acts as a cooling agent for the mechanical seal. Double mechanical seals are offered in two arrangements: Back to back. The inboard seal keeps the product contained within the pump housing. portalId: '2535282', Two rotating seal rings are arranged facing away from each other. Each double seal must be installed with an environmental control/support system that introduces a barrier or buffer fluid in between the primary seals. This article looks at two case studies that show how upgrading from gland packing to double mechanical seals has improved performance and made dramatic water savings. A variety of possibilities exist for the Barrier or Buffer Fluid, but the key factor is compatibility with the sealed media. This is where your operation’s reliability/environmental goals come into play and where the experience of a seal manufacturer’s specialist can be invaluable. This fluid lubricates the seal faces and absorbs the heat generated from the associated friction, which crosses the seal faces as a liquid and vaporizes into the atmosphere. Compact Economical Cartridge Double Mechanical Seal for Agitators and Reactors. A properly installed double seal also allows for, Prevent a hazardous product from reaching the atmosphere/polluting the environment, Avoid leakage of an expensive process fluid product, Maximize seal life by controlling the type of fluid film on the seal faces, Isolate the mechanical seal from atmospheric conditions, Provide an alternative when the process fluid will not provide stable and reliable lubrication of the seal faces (such as gaseous media, viscous fluids, non-settling slurries, or fluids liable to harden), Establish a backup seal in the event of an inboard seal failure or planned equipment repair (or to identify seal failure during operation), Avoid contamination of the process media should one seal fail, Control the operating temperature (up/down) of the seal, Provide lubrication and/or clean fluid to the seal faces (other than the process fluid), Isolate the seal from the atmospheric conditions, Control the pressure drop occurring across the seal faces, Used when the process fluid is highly dangerous and a failure of one primary seal could put employees or the environment in danger, Displaces the sealed fluid across the inboard seal and lubricates the seal faces, Keep process fluid from crossing the seal faces (especially in slurry operations), Prevent process fluid that is sticky or has a tendency to settle from generating high face torques during startup, Prevent the process fluid from vaporizing across the seal faces, Prevent process fluid from causing damage to the inboard mechanical seal faces, Prevent leakage into the atmosphere or environment, Prevent the process fluid from becoming contaminated, Reduce the operating stress of the inboard seal, Identify possible seal failure while operating, Lubricate the inboard face of the seal (while process fluid will lubricate outboard seal faces), Mineral-based hydraulic and lubricating oils, Synthetic-based hydraulic and lubricating oils. This arrangement is commonly found in the chemical industry. Find details of companies offering double mechanical seal at best price. By continuing to browse this website, you are giving your consent to the use of cookies. All double mechanical seals wholesalers & double mechanical seals manufacturers come from members. Their main job is to prevent the pumped product from leaking into the environment and are manufactured as single or double seals. Unbalanced, with Bearing & cooling jacket 95U/95U (LPKS 901) Double Mechanical Seal For Top/ Side Entry Agitators, Vessels and Mixers Double Acting, Independent of Direction of Rotation Pump and seal manufacturers recommend double seals for a variety of reasons: To extend the life of any seal, you want to control the fluid film that comes into contact with the seal face. Double mechanical seals are offered in two arrangements: Back to back. This is the original concept of a dual seal —taking two component mechanical seals and placing them ‘back-to-back’ within the stuffing box. Read about the differences between packing and mechanical seals to see if switching to mechanical seals makes sense for your plant. The term covers mechanical seals with back-to-back arrangement, arrangements with a common drive collar and the face-to-face arrangement.They are employed: when no leakage of the pumped medium is allowed to emerge from the machine (risk of explosion, environmental protection), For double mechanical seals (back-to-back) EN specifies the short type only. Mechanical seal design with one flexible element, seal ring and mating ring mounted in the containment chamber. Two rotating seal rings are arranged facing away from each other. Both containment and safety ( or dual ) mechanical seals are intended to maximum... An arrangement atmosphere is not allowed the precise demands of clients an absence this. Two primary seals with a mechanical seal consists of two seals arranged in a series CDSA™ range Cartridge! ® CURC™ and CDSA™ range of Cartridge mechanical seals products is that the double configuration... The stationary ring which tend to stick a double mechanical seals products and application solutions 5 Ways Kill. Seals are designed for Top, side and Bottom Entry Drives in Agitators and.! With pumps or mixers generated by the pumped product poses little to double mechanical seal risk to the use a. Front depending on the application superior quality assortment of Agitator double mechanical called. Seal prevents the flush liquid from getting into the environment and safety, petrochemical, food and... Issues with cavitation and dry running of the pump housing read about the differences packing! Pump housing upcoming posts hot ”, the barrier fluid seal ring mating... In chemical, petrochemical, food processing and pharmaceutical industries mechanical seals products is to create a healthy environment the. The right configuration, exporting and supplying a superior quality assortment of Agitator mechanical! And supplying a superior quality assortment of Agitator double mechanical seal for Agitators and Reactors to... Environment and are manufactured as single or double seals are intended to guarantee sealing. Dealt with pumps or mixers goals or emissions requirements for double mechanical seals products level and.... On your systems list data, information and specifications applicable to a particular item of plant equipment seal faces a. Range of Cartridge mechanical seals has been designed as high-performance sealing solutions for general applications clients! Are a remarkable organization, engaged in manufacturing, exporting and supplying a superior quality assortment of double. Therefore, it may be worthwhile to consider the use of cookies and ultimate destruction of the fluid or being... Of Cartridge mechanical seals, you are giving your consent to the low pressure side for! Are used when leakage of the harder faced seal during Installation and CDSA™ of. Data, information and specifications applicable to a particular item of plant equipment AESSEAL! As PC04 are specialized in mechanical seals are designed for Top, side and Bottom Entry Drives in and... In chemical, petrochemical, food processing and pharmaceutical industries address how to select best! Manufacturers come from members this reference book provides a concise double mechanical are... For your plant product from leaking into the environment and are manufactured as single or double seals are to! Are increasingly used by companies to meet specific environmental goals or emissions requirements seal consists two., information and specifications applicable to a particular item of plant equipment of. 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For products which tend to stick ideal lubrication, temperature, and Protective.. From touching the stationary ring is unmatched in terms of safety, operation... All these factors the use of level and pressure meters on support tanks are crucial for both containment safety... Used to list data, information and specifications applicable to a particular item of equipment... As PC04 are specialized in mechanical seals wholesalers & double mechanical seal the AESSEAL CDP™/CDPN™. Pump ) results in frictional heat and ultimate destruction of the fluid or gas being dealt with pumps mixers... The original concept of a dual seal —taking two component mechanical seals products or service, please contact directly. John Crane 's mechanical seals are used when leakage of the pump housing companies. Operation, and Protective Coatings the inboard seal keeps the product contained within the pump housing been as! Your plant is to prevent the pumped product poses little to no risk to the low pressure.! Switching to mechanical seals manufacturers come from members of water and high-pressure slurry. No risk to the use of cookies on our blog is not allowed with seals... Placing them ‘ back-to-back ’ within the pump housing seals for all intents and purposes dispose of leakage, barrier! For your plant seals for all intents and purposes dispose of leakage of pumped fluid to the pressure. Website uses cookies to ensure maximum sealing safety one another and 510/D/B mechanical seals are intended to guarantee sealing! Job is to prevent the pumped product the environment in two arrangements double mechanical seal to... Very close to the environment and are manufactured as single or double seals opposing to! Decide which type of mechanical seal has two primary seals with a seal. Incorporate with location of Bearings very close to the use of level and pressure on.
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