radial seal
- November 30, 2023
Bottling lines allow manufacturers to rapidly fill thousands of bottles perfectly making them a key element in food & beverage manufacturing facilities. While this equipment is incredibly efficient and has allowed manufacturers to greatly increase production, it offers some unique challenges for sealing solutions. Seals experience rapid and repetitive movements, challenging media, and are required to meet high purity standards often set by the FDA.
With these demanding applications and strict requirements, sealing manufacturers need a lot of expertise and specialized materials/ designs. Today we are going to highlight our Distributor Fredenberg-NOK Sealing Technologies and their brand of Freudenberg seals designed specifically for bottle filling and process industry applications.
- September 21, 2023
CNC Machining Seals with a Haas Automation Machine
CNC machining, which stands for Computer Numerical Control, is a manufacturing process in which pre-programmed computer software dictates the movement of tools and machinery.
The process can be used to control a range of complex machinery, from grinders and lathes to mills and CNC routers.
But in our case, Gallagher is utilizing this process to cut both custom and standard seal profiles for our customers.
CNC machining seals can be great for rapid prototyping or small production runs.
- May 09, 2023
Contamination With Seals
Neglecting routine maintenance can cost you in seal performance or, in some cases, end with catastrophic failure. Prolonged downtime will incur losses that exceed the temporary cost of preventative maintenance.
It’s important to identify seal contaminants and their sources before they turn into larger issues. Here are some tips on what to look for and how to deal with them.
Common contaminants
Here are some typical contaminants you’ll come across:
- From original manufacture: debris, casting sand, paint, pipe sealant, cleaning rag fibers and weld spatters
- Pre-existing particle matter in system fluid before being entered into the system (through lack of pre-filtering)
- Ingressed contamination through rod/piston seals, component seals or poorly fitted covers, such as dirt, mud, water, dust and oil
- Ingressed particles that attract or generate larger particles causing abrasion, corrosion, cavitation, erosion
- December 20, 2022
Used as protective devices designed to isolate pressure gauges, pressure transmitters, and pressure switches from potentially damaging process media, diaphragm seals provide effective solutions to protecting pressure instruments. Typically used in refining, petrochemical, and chemical plants, they can help extend the lifetime of various instruments by preventing contact between dangerous hot or corrosive media and the gauge.
Diaphragm seals were especially designed to meet the safety demand requirements of the process industry to offer the utmost of protection against harsh temperatures, variable pressure ranges, pulsation, vibration, aggressive chemicals, and steam.
Understanding How the Seal Actually Works
A diaphragm seal is usually connected to the measuring instrument using a direct connection or capillary. It is an elastomer or flexible metal diaphragm that keeps the process media from coming into contact with the workings of the gauge. The chamber between the
- October 26, 2022
In the process industry, the Simmerring® Radiamatic HTS II shaft seal ring offers diverse options for its use, such as bottling systems, food equipment, and pharmaceutical and cosmetics units, along with mixers. The key advantage of HTS II shaft seal rings is their high resistance to media since the substances only come into contact with PTFE. This makes it possible to achieve particularly hygienic processes. For approaches based on hygienic design, Freudenberg Sealing Technologies offers dead-space-free variations, such as HTS II 9539 VL with a forward-positioned seal lip.
- December 09, 2021
Depending on the direction that squeeze is applied to the cross section on o-rings or seals, they will be categorized as an axial or radial seal.
Static Axial Seals
A static axial seal will act in a similar manner to a gasket that is squeezed on both the top and the bottom of an O-ring’s cross section. A static axial seal is used in face, or flange-type type applications. When it is used as a face seal and there is internal or external pressure, the O-ring should be positioned against the low-pressure side of the groove to cut down on O-ring movement and accompanying wear within the groove.
These seals are easier to design than static radial seals. This is due to the lack of extrusion gap and less design steps. That enables the user to more easily control the tolerances.
Static Radial Seals
- October 30, 2020
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Website and was written by Vivek Sarasam, heavy duty mobile Sr. application engineer, and Jeffrey Labonte, market manager.
Roll2Seal® is an all-new sealing solution developed by Parker Prädifa for easy and effective closure of bores in non-pressurized applications. The clever, patent-pending design combined with an equally new assembly process enables simple and accurate installation of the seal, which rolls into its seat undamaged and without a lead-in chamfer.
- March 12, 2019
Freudenberg-NOK Sealing Technologies has begun supplying innovative, lightweight radial shaft seals to a major Detroit-based vehicle manufacturer for installation on the V6 and V8 engines powering its newest pickup trucks and sport utility vehicles (SUVs). Enter the Freudenberg BlueSeal.
The BlueSeal, part of Freudenberg’s award-winning Low Emission Sealing Solution (LESS) portfolio of engine, transmission and E-Mobility product solutions, provides significant weight, friction and installation advantages over traditional radial shaft seals. Under the contract, Freudenberg-NOK will produce more than 2 million BlueSeals annually. Production is expected to increase further to more than 4 million units annually with orders from additional customers.
40 percent lighter and 50 percent less space to install
- February 19, 2019
A patented lip design and the patented combination of PTFE sealing lip and sliding bearing in the lip seal element provide the new dry running seal "SeccoLip" from EagleBurgmann with particularly high flexibility. These technical features help the lip seal compensate directly and safely radial deflections of the shafts in agitators, mixers and reactors.
The sliding bearing tracks the complete lip seal element to the shaft movements. Since the lip and bearing are in one element, the sealing gap between the rotating shaft and the sealing lip remains virtually constant and the seal remains tight over the long term. Compensating elements such as O-ring, expansion washer or metal bellows are not required for reliable operation.
The modular seal was specifically designed for the operating conditions in the chemical, pharmaceutical, food industry as well
- January 15, 2019
Installing Radial Shaft Seals
Radial shaft seals, also known as lip seals, are used to seal rotary elements, like a shaft or rotating bore. Hydraulic pump seals, axle seals, valve stem seals, or strut seals are the most common examples the average person would recognize.
Radial shaft seals are used in a variety of applications and perform two essential functions: the first is to avoid leakage through retaining the bearing or system lubricant; the secondary function is to avoid the contamination of the system by outside impacts (external particles or environmental issues).
