Crane Engineering. formId: '8ad53f73-042d-439e-b15d-ce48738bb622' Subscribe now. 1-978-469-6810 But before you jump into changing all your packing to mechanical seals, make sure you talk to someone who knows about them. RE: HP draw of packing vs mechanical seals daveboy (Mechanical) 22 Dec 05 03:28 If you look in many of the mechanical seals manufacturers general handbooks you will find graphs for power loss per RPM versus seal diameter and differential pressure generally presented seperatly for balanced and unbalanced seals. These are some factors to weigh when looking to replace packing with a mechanical seal: The decision to move to mechanical seals is often driven by the impact of constant leakage from packing on the shaft; bearings; safety; and maintenance. Compression Packing. Or have a current problem with a mechanical seal? When the factors above are not an issue and adequate staff is available for adjustments and repacking, packing offers a low up-front cost and fairly simple maintenance. hbspt.cta._relativeUrls=true;hbspt.cta.load(367944, '653bfc64-b42f-49ab-9f03-d8b5b4d8be4b', {}); Water/Wastewater Treatment Equipment Repair, 707 Ford StreetKimberly, WI 54136920-733-4425, 12265 Nicollet AvenueBurnsville, MN 55337800-776-4425. That reduction in leakage also has an effect on a number of other things as well. Seals Annual Packing Costs: + packing + Shafts and Sleeves + Bearings + Lost Pumpage + Routine Maintenance + Packing Flush + Remove Flush from Product + Additional Power to Drive Packed Pump $ Total Sealing Expenditures Annual Mechanical Seal Costs: + New Seal … The invention of cartridge and split mechanical seals effectively eliminated those dilemmas, but many operations have stayed with pump packing out of sheer habit in situations in which seals would provide a better return. Learn about these different technology advances in an upcoming post. In certain applications, gland packing is preferred over mechanical seals, e.g., … Thinking of making the switch from conventional packing to mechanical seals? Some form of sealing method must be put in place to minimize the leakage. Packiro vs. How One Maintenance Team Cracked The Code On A Pump Pressure Problem →, Failed Mechanical Seal Turns Up Heat On Cold Storage Facility, Leaking Mechanical Seal? hbspt.cta._relativeUrls=true;hbspt.cta.load(367944, 'cf1a2f41-c9d3-4823-a1cb-7bd946c7b792', {}); The biggest benefit of using mechanical seals is the drastic reduction in leakage. By understanding the two products, barge … 5 Key Features of Good Mechanical Seal Design. Though mechanical seals will provide an excellent seal for some of this equipment, the confluence of the expense due to large equipment size, large shaft movements due to large particles impacting the impeller, and abrasive media leads to most customers choosing to pack their equipment. Aplikasi teknik yang tak terhitung jumlahnya bergantung pada perangkat ini untuk berfungsi … If you are running a rotating equipment and using packing as a sealing option, this will increase power consumption and thus raise the cost of the production. Learn about our new products and get tips and application solutions. Privacy Policy. To combat leaks and spills, it is important that the proper selection of sealing solutions for valves and rotating equipment: mechanical seal versus packing. Which is the best and most effective sealing technology for your pump or agitator application? In this post, we’ll provide information on making the best sealing choice based on operational priorities, applications, and budget. Gland Seal vs Mechanical Seal. He started his career as a sales engineer for mechanical seals and has held various sales, marketing and product leadership positions globally. Both are used to seal the rotating shafts. Groveland, MA 01834 USA Packing. And although some say that packing requires more energy than mechanical seals, our testing has found that they are essentially the same. It's still a very popular method of sealing pumps because of its low upfront cost, easy installation, and readily available materials. No more adjusting or replacing packing. Packing materials were originally the sealing method of choice, using soft, flexible materials. Packing cannot be 100% leak free. Mechanical seals reduce power consumption when compared to gland packing. Compression packing may initially appear inexpensive but when all the associated costs are tallied, packing is considerably more expensive over time than the installation and operation of a mechanical … However, it can be a very costly venture over time as they require more maintenance, and also allow more product loss than mechanical seals. Today's packings come in a wide variety of choices, with something for nearly every application. Mechanical seals can save maintenance people an immense amount of time and money, but only if they're installed correctly and properly cared for. Or check all three! A mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. USING MECHANICAL SEALS. Chesterton Company. The term “seal” is used to refer to a variety of products including notary seals (i.e., tools used by notaries to place authentication on legal and technical documents) and security seals … Gaskets, O-rings, Mechancial Seals. Gland Packing atau Mechanical Seal keduanya adalah komponen yang sangat penting dari shaft dan pompa. We gladly provide technical assistance to businesses in Wisconsin and Upper Michigan. Learn more about the relationship between mechanical seals and pumps in our eBook! Even when leakage isn’t visible, harmful vapors could be escaping. Think Twice Before Tightening, 5 Ways To Kill A Mechanical Seal During Installation. Mechanical Face shaft seals do however take more space than a lip seal, and are more expensive than lip seals, braided packing … Assume the cost of a dynamic seal for a 4X4 pump is $2500. The advantages of mechanical seals over compression packing or glands are: Mechanical seals ensures almost zero or very little (as per the regulations) leakage of the fluid from the pump casing to the … Examples of o-rings and radial shaft seals. }); 860 Salem Street Ask us about it! Mechanical seals are devices that seal machines between rotating parts (shafts) and stationary parts (pump housing) and are an integral part to the pump. This is also true for single mechanical seals. In his free time, Raman enjoys photography, golf, and reading about international trade and macroeconomics. Let us do a cost comparison of dynamic seal vs. packing and mechanical seal. This is also true for single mechanical seals. Filed Under: Mechanical Seals, Pump Packing, Sealing Tagged With: bearing failure, Double mechanical seal, Pump reliability, Shaft sleeve damage, split seals. DOWNLOAD FREE E-BOOK: "Using Split Seals … The most often asked question is what to choose for the pump sealing application; a mechanical seal or compression packing… Image Credit: Mechanical Research & Design, Inc. On the contrary, mechanical seals are designed to consume less power which saves the company from extra production cost. hbspt.forms.create({ BLOG POSTS: Mechanical Seals vs. Things like a safer work environment without a wet floor, fewer bearing failures caused by leaking fluid, no excessive wear on the shaft sleeve damage from packing (see photo). In many cases, compression packing IS still the right answer for rotating equipment applications. Due to inboard springs that get adjusted as the seal faces wear, it is not required to do daily maintenance. These costs are usually not considered when using packing but are actually a part of the total sealing costs. (Here's an example where a paper mill replaced packing with a mechanical seal to stop leakage.) A mechanical seal, and more specifically a double mechanical seal, should always be used when the pumped fluid presents a safety, health, or environmental hazard. Chesterton Mechanical Seal & Packing Design Chesterton Certified Mechanical Seal Repair. Packing seals are removed and replaced much more often than mechanical seals, which causes considerable wear and tear to the pumps as they are disassembled and reassembled. The biggest benefit of using mechanical seals is the drastic reduction in leakage. A mechanical seal is simply a method of containing fluid within a vessel … But in other situations, … ← Gate Valves and Knife Gate Valves: Isn't One Just Sharper? Unfortunately, the discharge pressure will force fluid back behind the impeller, where it attempts to exit by way of the rotating drive shaft. (Here's an example where a paper mill replaced packing with a mechanical seal to stop … Consequently, conventional pump seals such as single or double seal assemblies, lip seals, or packing material are often used to seal mixers and agitators. One area where these factors align is in large slurry pumps, such as those found in the mining and ore processing industry. Mechanical Seals can handle 200 to 400 PSI (in common configurations) and leak far less (only a vapor) than braided packing or lip seals. Thinking of making the switch from packing to mechanical seals? Basics of fluid pump sealing. Packing, WATER/WASTEWATER TREATMENT EQUIPMENT REPAIR. As the impeller rotates, its vanes fill with fluid, then force it out to the pump casing where it exits the pump through the discharge nozzle. Running rotating equipment with packing … Even when leakage isn’t visible, harmful vapors could be escaping. There's a lot of upside to doing so. Raman Hanjra is Global Product Line Manager of Packing & Gaskets for A.W. Since most of the pump manufacturers offer packing as a standard and the price is already built in the pump price, the initial cost of Packing … A mechanical seal, and more specifically a double mechanical seal, should always be used when the pumped fluid presents a safety, health, or environmental hazard. Likewise, some customers will try to make a mechanical seal fit into an application where packing makes more sense. On average the majority of gland packing consumes 6 times more power than a balanced mechanical seal. When choosing the sealing option that’s right for your applications, mechanical seal and gland packing seal … Oil seal vs. mechanical seal is not always an easy decision. Mechanical seals are a device used to seal fluids on a rotating shaft, … Mechanical seals are complicated pieces of equipment, with a wide variety of materials and configurations to choose from, be sure that what you invest in is exactly what you need for your application. Fluid Sealing & Equipment Protection Expertise. Normally oil seals cannot with … This decision focuses on the safety or environmental issues associated with leakage. Their main job is to prevent the pumped product from leaking into the environment and are manufactured as single or double seals. The maintenance department also sees a savings in time and budget. Another feature in favor of packed gland is that in case of a leakage, it can be adjusted keeping the pump in service where as this is not possible in the case of a mechanical seal as pump … The seals do not damage pump sleeve or shaft. in a plumbing system), containing pressure, . Packing cannot be 100% leak free. As it becomes required and more important to keep manufacturing eco-friendly, the debate between traditional packing versus mechanical seals has become clear. GLAND PACKING Gland packing is a conventional shaft seal which is preferred by mechanical engineers. Understanding The Basics of Mechanical Seals Vs. Choose from newsletters on Sealing, Lubricants/MRO, and Protective Coatings. Read on for a basic understanding of mechanical seals, and how they differ from packing. For many types of equipment, applications, or conditions, using a mechanical seal is really the only effective sealing option. Attempts have been made by pump manufacturers to minimize this leakage through design, but the leakage won't be stopped entirely. He holds a BS in Mechanical Engineering and an MBA in Product & Market Development and Supply Chain Management. Mechanical seals cause less power consumption than gland packing because of the lightly loaded faces. portalId: '2535282', MECHANICAL SEALS. Less maintenance time is required with a mechanical seal during operation, as packing must be regularly inspected and adjusted/replaced, whereas a mechanical seal operates, without attention, until the seal faces are badly worn. Mechanical seals vs. pump packing? Understanding The Basics of Mechanical Seals Vs. In some cases, one is the obvious choice because you are replacing a worn out seal with the same type. Long ago, companies didn’t want to switch to mechanical seals because of the complicated installation and need to completely disassemble the equipment. Mechanical Seals: For diverse applications where you need to avoid leaks, mechanical seals prove more beneficial than traditional packing seals… Before you decide which seal to use, compare the respective differences between mechanical and gland seals to see which one is right for your project. Mechanical seals … New materials such as carbon fiber, advanced lubricants, and new braiding technology translate to longer packing life and fewer maintenance and equipment wear issues. Today’s packing advances also mean that packing will last longer in many situations and require fewer adjustments than the basic options available in the past. Mechanical Seals and Gasket Supply is our Specialty. Basically oil seal is used to seal oil Chambers of rotating equipments like pump, agitator, gear box bearing housings. Fluid enters a centrifugal pump through the suction nozzle at the center of a rotating impeller. On an average most gland packing uses 6 times more electrical energy than a well-balanced mechanical seal. info@chesterton.com. In mechanical seals… American Seal and Packing is a leading manufacturer & distributor of mechanical seals, Grafoil® Flexible graphite, gasket material, cut gaskets and quality o-rings providing innovative solutions to mechanical seal … Cost of a Mechanical seal is $1200. While packing has lower upfront costs, over time it becomes much more expensive as the material requires continual maintenance … In order to understand why pumps need to be sealed, let's go back to some pumping basics and review how a centrifugal pump operates. All Rights Reserved. However, these pieces of equipment are known for having much larger radial shaft run out than a typical pump which can cause pump seals … However, often the decision to use packing vs. mechanical seals in pumps, agitators, and mixers is more blurred and requires a careful assessment of what is most important to your operation. © Copyright 2020. This article will explain what a mechanical seal is and the key design features that make them work. Think Twice before Tightening, 5 Ways to Kill a mechanical seal is and the key design features that them., one is the drastic reduction in leakage. Gate Valves: is n't one Just Sharper the!, flexible materials than a balanced mechanical seal is not required to do daily maintenance the leakage. with. Used to seal oil Chambers of rotating equipments like pump, agitator, box., some customers will try to make a mechanical seal is used to seal oil Chambers rotating. 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