Hydraulic Seals/

Mechanical Seals

Mechanical seals are tools used to prevent leakage in all kinds of equipment. “Mechanical seal” is the broadest way to describe a seal. O-rings, lip seals, oil seals, hydraulic cylinder seals and an extensive variety of other seals all qualify as mechanical seals. Mechanical seals are intended for applications in which a rotating shaft and its housing are under a state of stress, including a combination of high pressure, temperature, and speed.

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Allied Metrics Seals & Fasteners, Inc.
Sparta, NJ
973-383-2487
Allied Metrics Seals & Fasteners is a manufacturer and distributor of metric o-rings, metric seals, oil seals, hydraulic piston seals, pneumatic seals, hydraulic rod seals and more. We also produce and distribute piston seals, rod seals, v-packing, Teflon® parts, buffer rings and backup rings. As your one-stop source for sealing solutions, we provide inexpensive quality seals in all sizes, fast.
 
Grumen Manufacturing
Gurnee, IL
800-473-2297
We are your one stop shop for a variety of gaskets and seals. We are diverse with the materials and processes we offer and are driven by a desire to fulfill our customer's needs. Our company emphasizes innovative technologies with the most efficient methods of processing and we also provide you with gaskets & seals of the highest and most consistent quality. ISO 9001:2008 certified.
 
Premier Seals Manufacturing
Akron, OH
877-771-6766
Non-metallic gasket and sealing solutions - spiral wound, exhaust, viton, sanitary, ring, felt, foam and neoprene gaskets and seals. A wide variety of services including custom rubber molding, die cutting, kiss cutting, lathe cuts, slitting, extruded products and more in an array of materials. Through quality, competitive prices and customer service see the difference we can make for you!
 
Arizona Sealing Devices, Inc.
Chandler, AZ
480-892-7325
Your complete source for standard and custom o-rings, seals, gaskets and more since 1989. Call Arizona Sealing Devices first to solve your hydraulic seal needs, offering standard, metric, hydraulic and pneumatic kits with same day shipping on stock items plus full custom capabilities. Let AZ Seal quote your next project--no order is too small! Discover our variety of seals and available materials!
 
RG Sales, Inc.
West Alexander, PA
724-484-7544
At RG Sales, every customer is number one. Our strength is the flexibility to meet each customer's rubber seal needs in a timely & personalized manner with leading manufacturers' hydraulic seals, o-rings, vee & Teflon rope packing, quad rings, back up rings, sleeves & more. We serve many industries worldwide with cost-effective solutions, including lip, mechanical, oil, piston, and Polypak seals.
 
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Industry Information

Mechanical Seals

Mechanical seal varieties are used to prevent the unwanted release of pressure, lubricants, hydraulic fluids and other properties of a system that makes use of them. Seals are also used to prevent the contamination of those systems by dirt and other hazards. Equipment like agitators, mixers, gas seals, pumps, valves, actuators and many other kinds of machinery all involve the use of some variety of mechanical seal. In addition to preventing leaks, mechanical seals also keep contaminants from entering and help to maintain pressure levels. Piston seals, flange gaskets and diaphragm seals are also kinds of mechanical seals, and they are all essential to the functioning of certain kinds of equipment.

Most mechanical seals are specially designed to prevent leaks in particular applications and cannot be interchanged with those seals used in other mechanisms. A piston seal, for example, cannot be used as a flange gasket; they are shaped differently, made out of different materials and feature different mechanical properties. The shape, size, and composition of a given mechanical seal always depends on the conditions in which it will be applied. Also, depending on the narrowness or broadness of a given understanding of the words "mechanical seal," certain kinds of seals may or may not qualify. Simple plastic lids qualify by the broadest definitions, while some of the strictest definitions might only include seals applied in industrial process equipment or in heavy machinery. In either case, mechanical seals perform the same task: to isolate and contain materials in an enclosure. Correctly pairing seals with their applications is essential to the safe and effective use of the equipment in which they are installed. For example, Teflon is often chosen for use in hydraulic cylinders because it is resistant to corrosion induced by exposure to hydraulic fluids. Natural rubber, on the other hand, may degrade when exposed to such chemicals. The decision to employ a given seal material should always be chosen carefully; this will ensure sustained effective and safe operation of the seal and the equipment it protects.