What is Metric Compact Piston Seals?

Style ERKO Double-acting three piece piston seal. 80 Durometer Nitrile with fabric reinforced Nitrile and Nylon guide rings. The sealing action is effected by the fabric reinforced Nitrile member at the dynamic side. Lubricants such as oil and grease are able to penetrate the fabric and allow the seal to be highly wear resistant. Can easily be to one piece pistons. Style EZE Double-acting three piece piston seal. 80 Durometer Nitrile with fabric reinforced Nitrile and Nylon guide rings. Consists of a solid rubber element that is reinforced with fabric on both sides. This gives the seal excellent resistance to pressure surges. Style EZM Double-acting five piece piston seal. 80 Durometer Nitrile with Hytrel back-up rings and Nylon guide rings. Consists of a Nitrile rubber sealing element that effects both static and dynamic sealing. The back-up rings and the guide rings are of the split type. The low profile of the guide rings provides simple installation. Not suitable for retaining applications. Style EZW Double-acting three piece piston seal. 80 Durometer Nitrile with fabric reinforced Nitrile and Nylon guide rings. Heavy duty seal for multi-piece pistons. The robust profile and the sturdy right angle of the back-up/support rings give the seal high resistance to peak pressures and pressure surges. Rated to 7500 psi. Style L43 Double-acting five piece piston seal. 80 Durometer Nitrile with Hytrel back-up rings and Nylon guide rings. The hardness of the materials used in the construction of each component of the seal increases from the inside component to the outside component. As a result, the performance of each individual component is optimized in performing the individual functions of sealing, bridging the gap, and guidance within the cylinder tube.

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What is Piston Seals?

Two-part seal requiring no lubrication. Piston design is simplified; and sticking, slipping, and breakaway problems are eliminated. Damage associated with cast iron or phenolic piston ring particles is eliminated as well as cylinder wall scoring. Provides bi-directional sealing. Easy installation and removal, and can be cut in the field for easier installation. Inference fit assures positive sealing. Conforms to out-of-round bore conditions. Pressures to 5000 psi. ASP provides piston seals with 70 Durometer Nitrile Expanders. Other compounds are available by special order.

Square Piston Seals Style TPR1400

 Square profile 15% glass filled PTFE with 70 Durometer Nitrile O-Ring (Expander)

Rectangular Piston Seal Style TPR1800

Rectangular profile 15% glass filled PTFE with 70 Durometer Square Cut Ring

Piston Seal Installation Data 

1. Clean piston in solvent and dry. Inspect groove and end of piston for nicks or burrs which could damage the expander/piston ring.

2. Lubricate expander with a compatible lubricant for easier installation. Caution: Be sure expander is not twisted or distorted in groove.

3. Install the piston ring over a 10° included angle mandrel onto the piston body and into the groove in a single motion as quickly as possible. Do not use pry bars, screwdrivers, knife blades, or any metal object to install piston rings this will damage piston and seal.

4. After installation of the piston ring, carefully guide the piston into the chamfered cylinder bore carefully (check bore first for burrs, sharp edges and foreign material). If bore is not chamfered, use a smooth, lubricated and tapered piston ring compressor to facilitate installation.

5. To remove a worn piston ring, carefully cut through the PTFE piston ring and remove. Do not cut into the expander unless it is to be replaced also. Use care not to damage groove walls and create burrs or sharp edges.

All Types of Mechanical Seals & Gaskets Buy Online / Free Order Quote from AS&P

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What is O-Rings ? Learn Benefits of O-Rings

O-Rings

O-rings are also known as the toric joint and they are a type of seal used in industrial applications. The advantages of using these types of rings are many because they come with a rounded cross section and most machines used in an industry are circular in shape. Because of being circular by nature, they automatically match the shape of the device without much difficulty.

The origin of the o-rings dates back to the time in 1896 when it was first patented and was used in industries in the U.S. Later, sensing its versatile finish and usability in production, countries around the globe started purchasing it and now it is one of the most used accessories. The size of the rings are measured in different measurement scales. It is commonly measured in inches and sometimes in metric, based on the region around the globe. Irrespective of your location, you can easily purchase the material you need from any part of the globe as the size chart is the same wherever you go. The only region that varies drastically is in UK where it is referred using a BS scale which is almost the same but you may have to be careful when placing an order.

Common Uses The O-rings are best used as a joint within mechanical mounting. As they are made using metal bodies, they don’t easily give way and retain their shape irrespective of the pressure exerted on these items. The accessory acts as a reliable sealant even when high pressure liquid passes through it. It is also widely used in industries to contain gases, liquids and other types of items when they are transferred from one end of the manufacturing plant to another. They ensure that there is no leak in between which provides a loss free environment for investors to work in.

When inserting the ring in between two different metal casing, one has to make sure that the point of contact is not smooth because if it is too smooth, it may not exert the proposed pressure on the connecting bracelets. It could lead to unexpected leaks which is why they are always made with a surface finish that offers enough friction to keep the setup firmly in place during transfusions. Another widely used application for O-rings are in vacuum related applications where they are solid enough to not lose their shape. The best materials to create an o-ring for vacuum application is to make them using nickel, or copper materials. It is not advisable to use rubber because they could become hard when the temperature increases and brittle doesn’t withstand when the temperature goes really low.

Materials Used A wide range of materials are used to manufacture O-rings. The most common and the popular ones for every type of industrial purpose include butadiene rubber, butyl rubber, EPDM, Nitrile rubber, fluoro elastomer, Neoprene rubber and thermo plastic polyurethane. There are other types of rubber materials that are also used to make the rings. Sometimes, there are o-rings made using motor oils, even water and gasoline or hydraulic oil.

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Vulcan Multi-Spring Seals

Introduction Vulcan Multi-Spring Seals

Vulcan’s extensive 16XX range of Multi-Sprung Seals are commonly specified for arduous applications, such as corrosive process fluids or demanding operating parameters. The standard designs are available with a chemically resistant PTFE wedge component, which is spring loaded to force the flexible angular lip of the wedge into tight contact with the shaft.

The same spring force impacts a sufficient load to the rotary face to create a suitable seal interface with a varied choice of standard stationary seats, most commonly our Type 25 V Seat. Balanced face designs are also available for higher duty applications. ‘O’-Ring variants, of both balanced and nonbalanced Types, are available as standard. All the seal faces and wedges interchange with most common competitor designs by fitting into their retainers.

Applications

The 16XX family range are ideally suited for corrosive duties and are commonly utilised in the chemical industry, due to the inertness and sealing nature of the wedge design. These seals are also very suitable for a wide spectrum of application conditions. Their operating suitability range is enhanced by the ‘O’-Ring alternative design and the wide range of available elastomers.

Standard Vulcan 16XX Types Type 1609 Series Standard multi-sprung, grub screwed seal, available in a wide variety of face and secondary seal, materials and designs. Type 1659 Series As above, but compact design complies to DIN 24960 (EN12756) and ISO 3069 standards. Type 1645 Series Thin profiled, multi-sprung, grub screwed seal, conforming to ANSI B73 for American standard equipment.

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Vulcan Wave Spring Type Seals

Vulcan Wave Spring Type Seals Introduction :-

The Vulcan Wave Spring Range of Bi-Directional mechanical seals offer proven design and wave spring technology, in a multitude of material combinations, with superior designs but at very competitive pricing.

Applications :-

This range was specifically designed for rotary lobe pumps, whose principle application is normally for liquids of high viscosity. These are commonly found in the food, dairy, brewery and pharmaceutical industries. Their compact design makes these seals an excellent choice for confined stuffing boxes areas or even external mounted applications

Standard Wave Spring Spring Types 1. Type 1688
2. Type 1677
3. Type 1688L
4. Type 1682
5. Type 1678
1.Type 1688

The robust wave spring seal is ideally suited for standard, rotary lobe pump, stuffing boxes, of compact design. The seal is positively driven by grub screws and supplied from Vulcan with monolithic hard face materials as our standard.

2. Type 1677

The Type 1677 is a positively, bi-direction driven wave spring seal, utilising crest to crest wave spring technology, offering excellent axial movement capabilities. The seal is radially compacted and designed to suit DIN 24960 (EN12756). The design of this seal head, enables easy replacement of a wide range of high quality materials and elastomers, supplied as standard.

3. Type 1688L

As above but supplied with a Type 24 DINL pinned stat, to suit DIN standard housing dimensions.

4. Type 1682

A wave spring seal to suit standard rotary lobe pumps. The Type 1682 is similar in design to the Type 1688 but is driven directly from the grub screws.

5. Type 1678

Designed as per the Type 1677 but with a stepped face, to provide a balanced seal for stepped shafts.

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What is ASP TYPE 60 and How to works?

This seal is known as the friend of the maintenance man and can be used where a highly reliable, anti-clog seal is required. Long life is assured with the cool running AST 60 Seal. The floating rotary seal face eliminates seal face distortion inherent to shrink fit seal designs.

Since the springs are isolated from the pump, you may be able to reduce or eliminate flushing and product dilution.

Rebuild kits are available so you can rebuild the ASP 60 in your plant without tools. You control your seal repairs: no waiting for an exchange seal or cross-contamination from previous service.

! The ASP 60 Seal is designed for use in
! Power Generation: Cooling water, slurries, boiler feed, recirculation
! Chemical Processing: Reagents, solvents, process streams, paints
! Food Processing: Starches, slurries
! Wastewater Treatment
! HVAC Systems
! Pulp and Paper Mills: Brines, solutions
! Steel Mills: Pollution control, cooling water

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Why Mechanical Seals ?

One of the most important advantages of the mechanical seal is its low leakage rate, resulting in a cost saving because of the reduxtion in lost liquid.
The hazards of fire and personal injury are also reduced when the pumps are handling inflammable or toxic products. Simplified pump designs and reduced maintenance costs are also plus factors.

Mechanical Seals Online Shopping in USA by mechanical-seal The Most Common Seal Consists of a stationary flat seat which is mounted into a gland or seal chamber, a spring loaded rotating face and a static seal along the shaft. The spring holds the rotating face to the stationary face and sealing occurs between the parallel faces. The static seals stop leakage between the shaft and the rotating seak head and also behind the stationary seat. The faces of the Mechanical Seal in operation do not actually rub against each other, but are separated by a thin lubricating film a few molecules thick. This can account for the slight weepage from some seals that are operating satisfactorily.

Since all the wear is on the seal faces, further savings are realized due to elimination of shaft or sleeve wear which would result in use of packing.
Most Seal applications will runs years with little or no maintenance. Time formerly spent on adjustment of packing can be used elsewhere.

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Three extreme in-house tests for ProTech and competitive Seals

ProTech and Competitive Seals were subjected to three extreme in-house tests with ProTech clearly the seal of choice.
They are,

• 1. Oil Leakage Test
• 2. Water Exclusion Test
• 3. Dust Exclusion Test

1. Oil Leakage Test

ProTech and other seals were subjected to critical oil seal testing using a test machine built to SAE J110 standards. One-hundred hour tests were conducted with severe oil splash.

2. Water Exclusion Test

The test machine was modified by mounting five nozzles at various positions relative to the exterior of the seal to simulate a most severe external hose down. Using water at pressures of 30 to 62 psi, these nozzles individually sprayed each seal from a distance of 3" in both a static mode and while the shaft rotated at various speeds up to 3525 rpm. The nozzles tried to force water past the seal for nearly two hours.

3. Dust Exclusion Test

The test machine was modified with an enclosed chamber containing a large quantity of fine dust and sand which was vigorously agitated with the chamber attached to the outside of each seal area. The equipment operated at speeds up to 3525 rpm for a period of 70 hours in an environment that was literally a dense dust storm. ProTech was the only seal that passed all three torture tests. After lab testing, it was ready to confirm its performance superiority in field trials.

Read More Information about Mechanical Seals click here.

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