gasket tape
- July 05, 2023
Since 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.
- March 24, 2023
Gore Joint Sealant and Gore Gasket Tape Series 500
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
- 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.
- May 28, 2019
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
- May 30, 2017
Over 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.
[embed]https://www.youtube.com/watch?v=nwuxtiFbxH0[/embed]
- February 21, 2017
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 its 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.
