Electric cars with lithium-ion batteries have a range that is suitable for everyday use and require a high degree of safety. Various safety measures are being implemented to make sure that any thermal runaway of the battery is prevented or delayed. So far, plastic components used for this purpose have generally failed to meet the automotive industry’s strict test standards for electric drives. This is different with Quantix ULTRA from Freudenberg Sealing Technologies: The new material class can withstand very high temperatures. It does not melt or ignite. In laboratory tests, a two-millimeter-thick material sample can even resist an applied flame with a temperature of 2,192 degrees Fahrenheit for over 25 minutes.
Further tests simulate the emission of hot particles under high pressure, which can occur if the gases in battery cells are abruptly discharged. Quantix ULTRA withstands the stress test for 20 seconds. A two-millimeter-thick
Gallagher Fluid Seals' partner, Vesconite Bearings, is making a substantial investment in additional equipment to produce wear plates of unprecedented sizes, notes CEO Dr Jean-Patrick Leger.
The company aims to introduce 8 x 4 ft wear plates within the next year.
Vesconite has been responding to customer requirements for different plates for many years, and wear plates is no exception.
Customers have
Galvanic corrosion is an electrochemical process that occurs between two dissimilar metals, or between a metal and a conductive non-metallic material, when both are exposed to an electrically conductive media. In the case of a packing gland, it occurs between a metal component and the carbon or graphite packing. Under these conditions, the material that is closest to the anodic end of the galvanic scale will be corroded in preference to the one that is closest to the cathodic end of the scale. (See Table 1.) As the distance between materials on the galvanic scale increases, a corresponding rise occurs in the rate and the extent of the corrosion.
In a valve or a pump using packing made of either graphite or carbon, a galvanic reaction may be initiated as soon as any electrically conductive fluid, such as water, is introduced. Since graphite is more cathodic than the metals that make up valves and pumps, it is the metal that may
Kalrez Spectrum 7075 expanded on the capabilities of Kalrez 4079 by offering much lower compression set, increased seal force retention, broader chemical resistance and higher temperature stability.
Kalrez Spectrum 7075 joined the family of Kalrez Spectrum™ products designed specifically for the chemical processing industry. As a newer compound, 7075 contains enhanced physical performance properties, including very low compression set and improved seal force retention. To provide even greater sealing performance in dynamic applications where low friction is required, 7075 O-rings have a glossier finish than other Kalrez parts.
This video discusses, at a very high level, the characteristics of Kalrez 7075.
Gallagher Fluid Seals is a Parker Distributor is proud to be proud to be one of the few premier distributors to qualify as a “Parker Seal Technology Center (STC)”.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Blog.
An O-ring seal is a circular cross-section ring molded from rubber, used to prevent the loss of a fluid or gas in a gland. It is the most basic, and at the same time to the most widely used type of seal available since its invention in 1936 by Niels Christensen.
One of the key factors to getting the right
For heat exchangers designed for multipass flows within the shell — for example, Tubular Exchanger Manufacturers Association standard shell types F, G and H — it is common to incorporate a longitudinal baffle plate within the tube bundle design. These plates direct the shell fluid flow in desired directions to increase the dwell time of the fluid while in contact with the tubes, thereby increasing the heat transfer effectiveness of the exchanger.
There are many aged and aging process plants in operation today. In fact, many of the processing plants for power, chemicals, oil, etc., have been in service for more than 50 years. And while the piping itself may remain intact, their bolted flange gasket joints and connections are becoming misaligned, corroded and damaged due to repeated handling, chemical exposure and thermal cycling. This can lead to costly ruptures that may result in millions of dollars in damages, downtime, noncompliance penalties, irreparable environmental impact and litigation.
There is a solution that can extend the life of aging piping systems, preserving their functionality: raising the surface profile on polytetrafluoroethylene (PTFE) gaskets. This design modification can prevent leaks, spills and other releases in chemical processing plants by reducing and managing
Often times people think that a seal is just a seal or that the materials don't matter, but this is far from the truth. No two sealing materials are exactly the same and have their own unique characteristics that make one material perfect for a specific application while another could completely fail. Materials are truly the foundation of every seal and can't be overlooked when you are considering what kind of seal to use. When you are working in the food and beverage industry and are exposed to challenging conditions and extremely strict purity standards the materials become even more significant. When you are working with a specialized application like a bottling line you want your seal manufacturer to be a true expert, this is where Freudenberg Sealing Technologies' long history of developing highly specialized materials sets them apart.
Chemical Processing
Size: Various
Temperature: 200° F
Application: Carbon steel, lead-lined flanges
Media: Bromine
Pressure: 150 psi
A manufacturer of specialty inorganic chemicals needed a gasket recommendation for bromine service using carbon steel lead-lined flanges.
The expanded PTFE (ePTFE) gasket
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Blog.
Gallagher Fluid Seals is a Parker Seal Technology Center
Incorrect O-ring installation can lead to assembly damage causing leakage during the first pressure test. If the system does not pressurize properly, the entire piece of equipment should be disassembled and seals must be replaced. Depending on when this test occurs, multiple manufacturing steps could be in between the seal installation and the first step where leakage can be identified. If O-ring damage happens with high frequency, you could be wasting time and money