carbon ceramic mechanical seal quotation

Seals Unlimited Inc. is the leading supplier of American-made mechanical seals and rebuild kits. We stock over 15,000 seals and serve all industry professionals. Seals Unlimited Inc. has been family owned and operated since it opened in 1980. Learn more about Seals Unlimited Inc.

The PL-Series of seals are pre-engineered single and dual cartridge seals with nonmetallic wetted components for use in highly corrosive chemical services where the alternative cost of high alloy metal ...

The MTM 25_26, manufactured by MICROTEM, is a conical spring mechanical seal that can compensate positioning errors and withstand stresses created by vibrations. The contact surface can be made with silicon ...

... the Type 1 elastomer bellows seal is widely recognized as the industry"s workhorse. Suitable for a wide range of service conditions ranging from water and steam to chemicals and corrosive materials, the Type 1 mechanical ...

The PK Seal features a single spring rubber bellows that will not wear the shaft or sleeve. It fits into shallow stuffing boxes and the flexible rotary face floats to compensate for misalignment.

... fluid containment market. Variations to the seal specification can be accomplished by selecting from many different options. Seal faces are offered in any combination of Silicon Carbide, Tungsten Carbide ...

​​​​​​​The design of the Chesterton 442PR split seal is ideal for hot heater drains and boiler feed pumps where cooling to a single seal must be provided.

... include carbon/ceramic/nbr/ss304,resin carbon/ceramic/nbr/ss304/,sic/sic/nbr/ss304,tc/tc/nbr/ss316 and so on. we also can make changes as customers"requirement or totally design a new type of mechanical ...

The MTM 25_26, manufactured by MICROTEM, is a conical spring mechanical seal that can compensate positioning errors and withstand stresses created by vibrations. The contact surface can be made with silicon ...

Single mechanical seal, balanced, independent of the direction of rotation with multi-spring configuration. The MTM180 Series represents the mechanical seal with the ...

... carbon/ceramic/nbr/ss304,resin carbon/ceramic/nbr/ss304/,sic/sic/nbr/ss304,tc/tc/nbr/ss316 and so on. we also can make changes as customers"requirement or totally design a new type of mechanical ...

Our Mechanical seal model T1 can Replace AESSEAL P05U and JOHN CRANE 1 (US) . The normal material combination include carbon/ceramic/nbr/ss304,resin ...

TS58U Machined Mechanical Seal (Replace AESSEAL M03S ,BURGMANN BT-C5.KU,CRANE 58U,MTU DR3-S) TS59U (Replace AESSEAL M03 ,BURGMANN BT-C56.KU,CRANE 59U,MTU DR3-SC)

TS 58B (Machined Mechanical Seal (Replace AESSEAL M04S,BURGMANN BT-C5.KB,CRANE 58B,MTU DR3-HS) TS 59B ((Replace AESSEAL M04,BURGMANN BT-C56.KB,CRANE 59B,MTU DR3-HSC))

Our NUTECH cartridge mechanical seals are designed to fit all ANSI pumps for ease of installation and are pressure tested at our Texas manufacturing facility prior to shipping. We can custom design any cartridge style seal to fit your most demanding applications. We use premium grade materials of construction throughout. All seals are made in the USA.

Double mechanical seal - This is where two mechanical seals are used within a pump. The first seal retains the fluid within the pump as per the standard mechanical seal above. The second seal contains a barrier fluid to ensure the faces are kept clean and are lubricated preventing failure. Without such liquid, the mechanical seals would run dry and fail.

Cartridge seal - When a mechanical seal is first inserted within a pump its clearances should be set. By utilising a cartridge clearances do not need to be set as the unit is pre-assembled eliminating the need for time-consuming assembly and spring setting on site.

Packed gland - A packed gland is when a braided material which has an appearance similar to a flat rope is wrapped around a shaft. A packed gland is also known as stuffing as the packed gland is typically wrapped tight around the shaft and inserted within a chamber known as a stuffing box. Packed glands must leak a little to allow cooling from immediate contact with the shaft to prevent burning, and over time do wear shafts. Packed glands were used more historically as they were utilised before mechanical seals were invented. They are still used in some boiler feed pumps where seal failure is common from overheating, cavitation or the presence of high fine solid content is expected as it is a cheap way to seal the pump rather than utilising expensive flushing liquids or double mechanical seals such as in dredging.

Expeller Seal -An Expeller seal is a shaft sealing arrangement where a rotating part called an expeller is mounted where gland packing or a mechanical seal is normally fitted. Its appearance is similar to that of another impeller, with rigid vanes mounted on the rear of a disc, which as it rotates reduces shaft pressure creating a dry seal around the shaft without a gasket or packing.

However once rotation stops, so does the dynamic sealing meaning a seal must be in place to prevent media leaking. This can be done by either external flush, packing, lip seals or an inflatable bellows.

An expeller seal is useful for slurry pumps used within mines at remote locations where a seal flush is required, which consume vast amounts of water. As water is scarce, and expensive in such areas sizeable savings can be made by switching to such a sealing arrangement.

Typically Mechanical seals are usually manufactured in Carbon Ceramic, with a Stainless Steel Spring. Carbon is a good general choice for the majority of applications where a fluid is compatible, not contaminated and fairly clean.

Hard faced mechanical seals are typically used when the fluid handled may be harsh, and contain solids. Such seals are usually made in Silicone Carbide or Tungsten Carbide due to its hard wearing construction it is built to withstand unexpected small solids such as Sand, dirt, stone and is a great choice for heavy duty applications.

Do you require replacement mechanical seals and gaskets? Suffering from frequent seal failure or replacement? We can help diagnose the cause and eliminate recurring failures.

More Durable & more suited for long term operationEasily DamagedMore forgiving than mechanical seals, accepting particles, and large shaft movements such as in the Paper & Mining Industry. Can continue to be used even when pump has experienced excessive wear.Requires replacement more often adding to wear and tear of pumps as they are assembled and disassembled. More labour intensive

Safer as double seals, or cartridge type can be fitted drastically reducing the possibility of leakageIf packing requires fresh water supply as a flush it can leak to contamination or dilution of the pumped liquid

Recently we received a call from a customer. He was attempting to install a mechanical seal and had broken two of them. After a short discussion with one of our service technicians, it became clear that the customer was demonstrating a classic example of how to kill a mechanical seal, not using the correct lubricant.

When I heard about this, I asked the service technician to tell me more. I asked him to share with me the top 5 ways he has seen mechanical seals go down due to installation. He did not disappoint.

Mechanical seals are easily damaged during installation. That’s why it’s imperative to read the installation instructions carefully before attempting to install the seal. See photo here. The installation instructions stated to remove the spacers before starting the unit. The spacer became lodged in the seal, damaging internal components.

Pump misalignment is caused by pipe strain, deflection during a hard start, shaft run out, or a myriad of other scenarios. Misalignment puts undue stress on mechanical seal components, causing them to not function properly, wear prematurely, and potentially fail.

Be sure to follow proper installation guidelines and use laser alignment tools to ensure the pump (and ultimately the mechanical seal!) is set up for success.

Lubrication is necessary for proper mechanical seal installation. Lack thereof can damage o-rings or rubber bellows on the seal, causing them to tear, or roll. There are many options available, from petroleum jelly, to silicon grease, to special lubricants. Always check the installation instructions to ensure the lubrication you choose is compatible with seal components and the product pumped.

Dirt on the seal face, even oil from finger prints, can set a mechanical seal up to fail. Tiny particles can create wear and destroy seal faces, causing leakage.

This is probably one of the most common mistakes. Over-tightening fasteners can cause seal components to become distorted and leak. Oftentimes when a seal starts to leak, the natural reaction is to tighten even further! Unfortunately this just exacerbates the problem. Instead, try loosening a bit, the problem may correct itself, if the internals haven’t broken already from mechanical shock.

After reviewing this list of 5 ways to kill a mechanical seal, the service technician I worked with on this said he could come up with many more ways. Maybe that will be a follow up post. How have you seen a mechanical seal go down? Let me know in the comments!

Not sure why your mechanical seal is failing? Ask us about it! We gladly provide technical assistance to businesses and municipalities in Wisconsin and upper Michigan.

Mechanical seals are one of the most effective ways of sealing rotating shafts, consisting of two lapped faces arranged perpendicular to the axis of the rotating shaft.

The floating seal is a simple product made up of two components: a seal ring made of special cast iron and a rubber component (O-ring / gasket). Two identical seals form a pair when used. The sliding component, the seal ring, is supported by the rubber component, so it does not come in contact with the shaft, closely conformingread more...

Generally a 99.5% aluminum oxide offering excellent wear characteristics due to it"s hardness. It is chemically inert and can be applied to nearly any product. Ceramic cannot however handle the thermal shocks (don"t drop them) that Ni-resist or 17-4 seats can.

Graphite has the good property of good resistant-corroslon.high thermal conductivity and lower friction.good serf-Iubrtcation.the smaller expansion.They can be made into the seal faces.bearings and so on." is ideal to choose it as the frictional mating rings.