Tag Archives: gasket tape

Gore’s Gasket Tape Makes Installation Easy

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

picture of select sizeGASKET 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.

Continue reading Gore’s Gasket Tape Makes Installation Easy

Gore Joint Sealant vs Gore Gasket Tape: Which Should You Use?

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.

Gore Gasketing Joint SealantWith 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 them different, and what is the right choice for your application?

The Difference Between Gore Joint Sealant and Gore Gasket Tape Series 500

Simply put, the main decision factor for customers looking at Gore Gasket Tape products vs Joint Sealant is thermal performance. Gasket Tape Series 500 Tape has a much more expansive thermal range.

  • Gore Joint Sealant’s operating range is for temperatures between -60°C to 150°C (-76°F to 300°F).
  • Gore Gasket Tape Series 500 has a typical operating range between -60°C to 230°C (-76°F to 445°F).
    • It also has a maximum use from -269°C to 315°C (-452°F to 600°F).

Both products have excellent chemical resistance to all media pH 0-14 except molten alkali metals and elemental fluorine.

GORE Gasket Tape Series 500Joint sealant’s strength is derived from its fibers, not nodes. It’s made from 100% expanded PTFE with a monodirectional strength. Gasket Tape Series 500 is also made of 100% ePTFE but has multidirectional strength, making it less “squishy,” but much stronger.

For many applications, Joint Sealant would work just fine. For example, the Pulp & Paper industry generally works really well for Joint Sealant applications. There’s no need for Series 500 in their flanges due to the nature of processing at the facility. However, more demanding applications typically use the Series 500 or even Series 1000 Tape.

Speaking of Gore Gasket Tape Series 1000, what makes it different than the other two?

The Difference Between Gore Gasket Tape Series 500 and Gore Gasket Tape Series 1000

Gore Gasket Tape Series 1000 is a sealant that is excellent for particularly challenging applications, such as glass-lined steel equipment. Typical users of this product are chemical processors who deal with aggressive media under demanding conditions. These types of applications frequently have challenging and varying conditions – high temperatures, alternating pressures, low gasket loads, or deviations in surfaces. The main thing that differentiates Gore Series 1000 Tape from Gore Series 500 is the proprietary barrier core. This core helps to maintain the seal even at very low loads.

Gore’s Gasket Tape Series 1000 has an engineered core to amplify the available load. This helps create a seal more than 10X tighter than other ePTFE gasket tapes. Because of this, it delivers exceptional sealing reliability over time and process cycles relative to other ePTFE gasket tapes. It allows for more uptime and runtime periods, enabling longer maintenance cycles.

No matter the type of process media – – Gore has a solution to help you quickly seal challenging applications.

Still not sure which Gore product might be right for you? Check out this simple flow chart to see which one is best for you:

gore product flow chart picture


Gallagher Fluid Seals is an authorized distributor of Gore products, which include Joint Sealant, Gasket Tapes, UPG gaskets, and more. For more information or to see if Gore might be a good fit for you, contact us today.

Contain Aggressive Media, Protect Glass-Lined-Steel Equipment, Reduce Emissions

Gasket Tape Series 1000

Sealing Challenges

Glass-lined steel equipment is used by chemical processers to deal with aggressive media under demanding conditions. Yet the inherent demands of such systems – high temperatures, alternating system pressures, limited gasket loads and deviation of sealing surfaces – can make it challenging to maintain a tight, lasting seal.

While the Polytetrafluoroethylene (PTFE) material itself offers good chemical resistance, it does not readily conform to flange surface deviations, nor does it resist creep particularly well under low gasket loads. Incorporating compressible materials or fillers into common envelope gaskets or filled PTFE gaskets, offers only a partial solution.

Sealing challenges are even greater when gaskets for large flanges (≥DN 600/ASME 24″) are fabricated offsite. This often results in long lead times, as well as shipping, handling and inventory challenges. These, along with time-consuming and complex installation procedures, can complicate turnarounds or delay start-ups.

The Consequences Of Failure

Any of the mentioned approaches, especially if they involve
inconsistent quality across different gasket brands or product
lines, may lead to premature gasket failure, with consequences
that range from problematic to catastrophic, including:

  • Leakage/emissions
  • Equipment corrosion/damage
  • Production downtime
  • Cost increase
  • Risks to personnel safety

Gore Gasket Tape Series 1000 Addresses All the Challenges of Reliably Sealing Large Glass-Lined-Steel Flanges.

cross section of gore gasket tape 1000Made of 100 % expanded PTFE (ePTFE), this highly conformable gasket tape is chemically inert, and highly resistant to creep, cold flow and clamp-force loss. Its proprietary barrier core maintains an extra tight seal even at low loads.

Endorsed by De Dietrich, a leading manufacturer of glass-lined steel equipment, Series 1000 is optimized for processes utilizing highly aggressive media, as in chemical processing (e.g. specialty chemicals, agricultural products, polymers), mining and minerals. Series 1000 is designed for use in large (≥DN 600/ASME 24″) or non-standard flanges typical of columns, mixer vessels, reactors, storage and receiver tanks.

A Higher-Performance Sealing Solution

leakage rate on a 0.5mm deviationUnique barrier core technology

  • Barrier core engineered to amplify the available load.
  • Seals more than 10 times tighter than other types of ePTFE gasket tape.

Outstanding conformability to deviations

  •  Seals deviations even at low gasket stress.
  • Easily passes the bubble test, for trouble-free mechanical completion (MC) or start-up.

Optimal form for easy handling

  • Gasket can be customized on-site.
  • No fabrication lead-time required.
  • Convenient spool format simplifies and speeds handling & transport.
  • Adhesive backing enables easy installation.
  • Faster, less complicated shimming tape technique for larger deviations.
  • Reduces inventory costs.

Reliable and long-term seal

  • Barrier core creates a tight seal that impedes even highlypermeating media.
  • Provides chemical protection across the full flange width (100% ePTFE).
  • Gasket tape is engineered to resist creep and clamp force loss.
  • Allows full use of specification range of the glass-lined steel equipment.
  • Enables longer maintenance cycles, as demanded by leading chemical producers.

The Gore Sealant Technologies Quality Management System is certified in accordance with ISO 9001.


Original content can be found on Gore’s website.

Gallagher Fluid Seals is an authorized distributor of Gore Tape. For more information about how this solution can help you, contact our engineering department at 1-800-822-4063.

What is ePTFE?

ePTFE - Bill Gore & his wife, VieveSince 1958, Gore has developed products that improve lives. At the center of these solutions is polytetrafluoroethylene (PTFE), a polymer with exceptional properties like high tensile strength, a low dielectric constant, UV resistance and many more. In 1969, the possibilities for PTFE expanded with Bob Gore’s discovery of expanded PTFE, or ePTFE.

In the years since, Gore has developed unparalleled expertise in manipulating ePTFE and other fluoropolymers. Gore’s engineers can change a material’s structure, shape, thickness and surface geometry, then pair it with complementary materials to provide the performance qualities required by the application and the customer. The resulting product can be strong or permeable, rigid or flexible, thin or thick — with many additional combinations of properties that can be applied to meet the end use requirements.

Since its very founding, Gore has been passionate about solving the complex challenges of their global customers. From the first suggestion of a product need, to its delivery to market, this passion is apparent in everything Gore does.

  • Curiosity: From keeping water off a person’s skin to preventing leaks from happening in chemical containers, Gore listens to their customers and analyze the challenges to determine the underlying problem.
  • Competency: Gore determines how they can apply their expertise in fluoropolymer science to deliver solutions that are valued and differentiated from the competition.
  • Commitment: Gore rigorously tests their products to ensure they deliver failure-free performance and suit their customers’ needs and applications, the first time and every time.

Continue reading What is ePTFE?

VIDEO: Sealing Flanges with Surface Deviations

Surface Deviations - Pitted FlangeOver time, and for any number of reasons, flanges are prone to surface deviations.  Damaged areas will tend to create a leak path that the gasket must try to seal.

Flange damage most commonly occurs when removing previously used gasket material from the sealing surface – tools such as chisels, or screw drivers, should be avoided. A brass wire brush is suggested.

The video below proves how well GORE® Gasket Tape Series 500 works on flanges with surface deviations versus a standard filled PTFE gasket.

Continue reading VIDEO: Sealing Flanges with Surface Deviations

VIDEO: Installing GORE® Gasket Tape Series 500

A spool of GORE® Gasket Tape Series 500 provides an immediate, cost-effective solution to sealing challenges that demand reliable performance and extended durability. This advanced product, with Gasket Tape Series 500its industry-leading creep resistance, is designed to maximize the operational reliability of large steel-flanged applications, especially those with thermal cycling.

It eliminates the lag time, costs and complexities associated with engineering, specifying, procuring, shipping, storing and installing traditional one-piece prefabricated gaskets.  It also delivers exceptionally reliable sealing performance, while making multiple gasketing installations faster, more cost-effective and simpler.

Continue reading VIDEO: Installing GORE® Gasket Tape Series 500