October — 2012 — The Expansion Joints Blog


Archive for October, 2012

Flexxcel Elastomeric Materials for Fabric Expansion Joints

October 28th, 2012 Comments off

Elastomers— A general name for the group of synthetic “rubber” materials that are characterized by their elastic property. These materials are also known by their commercial names as Viton®, Hypalon®, EPDM, and Chlorobutyl.

Before the development of Fluoroplastics, a group of synthetic “rubber” materials were commonly used in flue duct expansion joint applications. These materials, known as Elastomers, include Viton™, EPDM, Chlorobutyl, Hypalon™ and others.

Because of their elastic properties, the various Elastomers are built up into a multi-layered sheet reinforced with fiberglass or Aramid fabric. The finished product, 1/8″ to 1/4″ thick, is then used as a flat belt or as an integrally flanged U-shaped cross section that bolts directly to duct or equipment flanges. The inherent characteristics of flexibility, abrasion resistance, and flutter resistance translates to long service life when applied properly.

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Giveaway Winner

October 26th, 2012 Comments off

We had a great turnout for our U.S. Bellows Expansion Joint In-Depth Webinar on October 24th. We are proud to announce the winner of our drawing for the EJMA Standards Ninth edition is George. Be on the lookout for our next giveaway!



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Fabric Expansion Joints Custom Designed for an Offshore Oil Extraction and Natural Gas Project

October 20th, 2012 Comments off

Round Fabric Expansion Joint
These fabric expansion joints were custom designed for an offshore oil extraction and natural gas project. They are 105″ dia. x 24″ O.A.L. 309 stainless steel was used for the duct, 310 for the liners, 316 for the covers, 321 for the studs, 309 for the flanges. The fabric belt was a three layer belt with an inner layer of glass cloth, a layer of KO wool and an outside layer of reinforced PTFE. The expansion joints were designed for 1 psig at a temperature of 1100°F. They The were designed for 4″ axial compression, a 1″ extension, and a 0.5″ lateral offset. All welds were dye penetrant examined.

Application Specific Materials for Flexxcel Fluoroplastic Expansion Joints

October 15th, 2012 Comments off

Fabric belt material selection is a critical factor in the successful design of each fabric expansion joint. View the different application specific materials for our Flexxcel Fluoroplastic joints.

Flexxcel HC40 For Highly Corrosive Applications
Flexxcel HC40 for Highly Corrosive Applications

*colors used to differentiate layers

  • LFP™ is an all PTFE material that is flexible, resists tearing and has superior flexing capabilities compared to other PTFE products.
  • Water StampBecause this is an all-PTFE product with excellent mechanical capability, no compromising reinforcement that can be chemically attacked is needed.
  • Regardless of the chemical exposure, LFP™ eliminates concern for chemical attack. This has been proven in laboratory and industrial service where, in all cases and regardless of chemical environment, LFP™ has retained all of its physical properties.

    Read more on Application Specific Materials for Flexxcel Fluoroplastic Expansion Joints

    Single Expansion Joint for an Offshore Deep Drilling Platform

    October 9th, 2012 Comments off

    These single expansion joint are refurbished with 321 stainless steel bellows for an offshore deep water drilling platform. They are 16″ diameter, 21-1/2″ OAL, and designed for 450°F at 8 psig. The expansion joints were dye penetrant examined, and an air and soap bubble test was performed prior to shipment.

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