GORE
- November 15, 2022
Gore® GFO® Fiber vs Graphite/PTFE Packing
When tested alongside generic graphite/PTFE packing, packing made of 100% Gore® GFO® Fiber achieves better results for all key attributes: creep resistance, retention of lubricant, sealability, and stability (shrinkage).
The differences in performances for each generic packings will have an impact on the operational costs.
- November 03, 2022
GORE UPG Ring and Full Face Gaskets
GORE® Universal Pipe Gaskets (Style 800) provide a reliable seal for steel, glass-lined steel and fiber reinforced plastic (FRP) flanges, in the full spectrum of strong acid, alkali, and solvent process media, including the most challenging thermal cycling and elevated temperature applications.
This single gasket solution can reduce the process safety and production downtime risks caused by the use of an incorrect gasket material. The highly conformable 100% ePTFE also reliably seals irregular surfaces.
- September 27, 2022
Gore is working with membrane electrode assemblies in fuel cells to help decarbonize applications from drones to warehouses.
While fuel cells have been around for almost a century, over the past decade their development has rapidly increased because of their potential to produce sustainable energy.
Fuel cells are designed to convert the chemical energy of hydrogen and oxygen into electrical energy. The cell itself consists of an anode and cathode, sandwiched around an electrolyte—a liquid or gel containing ions (also contained in batteries).
W. L. Gore & Associates, a global materials science company with its U.S. headquarters based in Newark, Delaware, produces items derived from fluoropolymers. Gore is also one of the leading suppliers of membrane electrode assemblies (MEAs), the core component that helps to initiate the electrochemical reaction required to separate electrons in fuel cells.
The MEAs produced by Gore is currently
- September 22, 2021
Not all applications are created equal, and when the application is especially demanding, one, at times, must consider different solutions.
Such is the case regarding air operated double diaphragm (AODD) pumps. Typically, applications associated with this type of pump involve chemical compatibility 0.0 issues, abrasive element concerns, or a combination of the two.Some examples include:
- Mining applications involving slurries of acids and solids
- Paint and coatings applications including chemical compatibility issues relating to solvents/additives and abrasion from pigments
- Ceramics
- Chemical processing
- Pulp and paper
- Similar applications using process media with abrasive solids
- December 02, 2020
Using GORE® Low Friction Film, a tissue-thin coating material made from graphite-filled expanded PTFE (ePTFE), enables a new level of performance in dynamic elastomer seals: Lower friction. Longer life. Better tightness.
GORE Low Friction Film – an innovative, tissue-thin coating material for dynamic elastomer seals – creates a permanent mechanical connection with the elastomer during the molding process.
Made from graphite-filled ePTFE (expanded polytetrafluoroethylene), this new solution opens up new opportunities and potentials in design, performance and application of dynamic seals. In automotive applications, it reduces friction and improves wear-resistance while maintaining excellent elasticity and sealability. Quite simply, this material is made for designing the future of mobility.
- September 08, 2020
Fiber Reinforced Plastic (FRP) pipes and flanges are increasingly used in the oil and gas industry where metal is simply too heavy and expensive. In addition to cost pressure, the need for lightweight chemically resistant materials are also driving the use of fiberglass pipes and flanges. Innovations in FRP flange design coupled with improvements in manufacturing technology have allowed FRP piping to be used in even more demanding applications. However, these demanding applications have added challenges for sealing the bolted flange connections.
More aggressive media and higher internal pressures have pushed the limits of the commonly used rubber gasketing materials, such as Nitrile Butadiene Rubber (NBR), Ethylene Propylene Diene Monomer (EPDM), or neoprene. Obtaining a reliable seal in FRP flanges using conventional gasketing materials has become more difficult.
Fiberglass pipes are generally known to have strength limits and a lower pressure resistance, making sealing fiberglass flanges difficult. Gore solved this problem with its patented expanded polytetrafluoroethylene (ePTFE) gasket, specifically designed to seal flanges at low stresses. This solution was successfully demonstrated in a multistage testing procedure conducted in cooperation with a globally leading manufacturer of anti-corrosive fiberglass pipe systems.
- May 19, 2020
Attention: When installing GORE Gasket Tape Series 1000 in joints with multiple (2 or more) gaskets compressed with a single set of bolts or clamps, see the installation supplement “Installation on Joints with Multiple Gaskets,” for additional mandatory instructions.
1. Select the size
GASKET WIDTH
Select the gasket width that provides enough material to align the gasket tape flush with the inner and outer diameter. Ensure full coverage of the glass surface. Excess material may exceed the outer diameter.
GASKET THICKNESS
Most applications require a base layer of 6 mm (1/4") tape, which can accommodate deviation up to 1.5 mm (1/16") without shimming. Applications with deviation up to 2.3 mm (0.090") can utilize 9 mm (3/8") tape without shimming.
SHIMMING
To effectively seal flanges with deviations beyond the maximum for the base layer, a shimming process is recommended. Use of 3 mm (1/8") GORE® Series 1000 shim tape as a shim layer will accommodate an additional 1.5 mm ( 1/16") of flange deviation. Ensure the shim layer has the same width as the base layer.
2. Determine a Torque Value
To achieve a reliable seal, adequate gasket stress must be applied during installation.
Typical minimum stress to seal values for GORE Gasket Tape Series 1000 are:
- 6 mm (1/4"): 14 MPa (2,030 psi)
- 9 mm (3/8"): 18 MPa (2,610 psi)
Perform an engineering calculation to determine the torque value for your specific application.
Industry guidance is available, for example in ASME PCC-1 Guidelines for Pressure Boundary Bolted Flange Joint Assembly, and EN 1591-1 Flanges and their Joints - Design Rules for Gasketed Circular Flange Connections - Part 1: Calculation.
However, ASME PCC-1 does not include glass-lined steel specialties. Therefore, it is advised to contact the equipment manufacturer for an adequate torque recommendation.
- April 17, 2020
Gore, Precision Associates, and Parker Join the Fight Against Covid-19
What Gore is doing to help
As the COVID-19 pandemic continues to impact communities around the world, Gore is working hard to identify ways in which they can apply their materials science expertise and production capabilities to help during this time of need.
Several initiatives are underway that bring together the knowledge, skills and capabilities from across Gore.
As an immediate and initial response to the personal protective equipment (PPE) shortage, Gore rapidly engineered prototype reusable mask covers to supplement clinicians’ primary face masks.
The effort went from a product concept to prototypes in less than one week. Gore currently has prototypes being evaluated at a limited number of U.S. facilities in COVID-19 outbreak hot spots.
Additionally, by providing their customers and other manufacturing companies with Gore's highly specialized component materials, they can use them to produce a variety of finished PPE items, such as:
- Protective medical gowns, using fabrics laminates from Gore's current inventory
- Universal filter cartridge prototypes for fixed masks that incorporate Gore's filtration materials intended to provide N95 particulate protection,
- Disposable N95 respirators, using Gore's filtration laminates
It is through these collaborations with those who have the technical capabilities and production capacity needed to produce the finished goods in volume that together, Gore and its partners truly are improving life.
Gore has even donated medical supplies and protective gear to healthcare workers in the communities in which their facilities are stationed. They've also extended a hand to provide engineering and prototyping support to address other urgent equipment needs at local hospitals.
What Precision Associates is doing to help
Precision Associates, Inc. has ramped up its production of several essential rubber components for ventilator manufacturer Ventec Life Systems. Ventec recently announced plans to partner with GM to increase the output of these crucial units in response to the COVID-19 pandemic.
Critical patients suffering from the virus have difficulty breathing and require ventilator assistance for life support. GM is now transforming one of its factories to begin assembling ventilators for Ventec in early April.
- March 10, 2020
ePTFE Gasket Tapes for High Chemical Resistance
The connections to shell and tube heat exchangers pose immense challenges for the seals that are used because of both the chemically aggressive media and the frequent temperature load changes. Despite its excellent chemical resistance,polytetrafluoroethylene (PTFE) is not typically suitable as a sealing material in this case because the creep tendency of this material jeopardizes a reliable seal.
Shell and tube bundle heat exchangers generally include not only several connection pieces but also a shell cover flange with a significantly larger nominal diameter.The shell cover flange creates the seal to the tube bundle flange, which then seals the shell flange. These connections are subjected to the full operating pres-sure and test pressure of dozens of bar and seal it from the environment. Oftentimes the tube bundles are arranged in several passes that are channeled by the use of partition plates. This requires a seal at
- February 12, 2020
Created more than 40 years ago, Gore Joint Sealant was the first form-in-place gasket. It was and still is a great sealing solution for steel flanges with large diameters, irregular shapes, or rough/pitted surfaces. It forms a thin yet strong seal when compressed and works in applications where bolt loads are low.
With a reliable, easy install and being a cost-effective sealing method, it's become standard seal for MRO applications all over the world. Installing it is very easy, too: Simply peel off the adhesive backing, apply it to the flange, and overlap the ends. Voila, you have an immediate custom gasket for your unique flange shape.
Looking at Gore Joint Sealant, you may notice it looks strikingly similar to other Gore products, such as Gore 500 Series or Gore 1000. So, what makes