Design Criteria
75Pages

Gasket CRITERIA. Flexitallic SAFE is an added level of seal integrity resulting from our commitment to innovation in materials, co-engineered solutions and onsite education to improve installation. UNITED KINGDOM / FLEXITALLIC LTD. 6915 Highway 225 Deer Park, TX 77536 USA phone: +1-281-604-2400 fax: +1-281-604-2415 Scandinavia Mill Hunsworth Lane Cleckheaton BD19 4LN United Kingdom phone: + 44-1274-851273 fax: +44-1274-300303 USA / CUSTOM RUBBER PRODUCTS 2625 Bennington Houston, TX 77093 USA phone: +1-713-691-2211 fax: +1-713-691-3005 CANADA / FLEXITALLIC 4340 – 78 Avenue Edmonton, Alberta, T6B 3J5 Canada phone: +1-780-466-5050 fax: +1-780-465-1177 UNITED ARAB EMIRATES / FLEXITALLIC LLC Amenity Centre, Tower Number 2, 10th Floor, Ofce 4 Al Hamra Industrial Area, Ras Al Khaimah phone: +971 (0)7 243 4305 SAUDI ARABIA / FLEXITALLIC MIDDLE EAST LLC Al-Aujam Industrial City 6790-Al Badia, Unit No. 1 Al Qatif 32656-2462 Kingdom of Saudi Arabia phone: 0096-13-8089635 CHINA / FLEXITALLIC SEALING TECHNOLGY CO., LTD Building 3 South Wujiang Export Processing Zone 688 Pangjin Road Wujiang, Jiangsu 215200 P.R. China phone: +86-512-6303-2839

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Gasket Design Criteria Section I - Gasket Selection 4 Section II - Joint Integrity Calculations 43 Section III - Gasket Installation 50 Section IV - Useful Technical Data 60 innovate customize educate i

Manufacturing Units Owned Manufacturing Plants Branch Offices & Warehouses The Sealex Group Green, England Tel: +44 (0)845 450 4353 Flexitallic L.P. Deer Park,TX, USA Tel: +1 281 604 2400 The Sealex Group Cheshire, England Tel: +44 (0)151 357 1551 Custom Rubber Products 2625 Bennington Houston, TX, USA Tel: +1 713 691 2211 The Sealex Group Cardiff, Wales Tel: +44 (0)2920 487646 Flexitallic Sealing Technology (Suzhou) Co., Ltd. Wujiang, Jiangsu, P.R. China Tel: +86 512 6303 2839 Licensees Euroguarco SpA Arcola, Spain Tel: +39 187 562611 AGS Flexitallic, Inc. Edmonton, Alberta, Canada Tel: +1...

FLEXITALLIC GASKET DESIGN CRITERIA Introduction FLEXITALLIC, the world’s leading manufacturer and supplier of static seals and the originator of the Spiral Wound Gasket, is committed to sealing solutions for today’s industry. With greater emphasis than ever before placed on joint tightness, more attention is focused toward variables associated with the integrity of the bolted gasketed joint. Flexitallic Gasket Design Criteria manual offers the engineer and end user assistance in meeting the goal of providing fundamentally sound static sealing practice. Developed and collated by...

SECTION I Gasket Selection Gaskets can be classified into three categories: soft cut, semi-metallic and metallic types. The physical properties and performance of a gasket will vary extensively, depending on the type of gasket selected and the materials from which it is manufactured. Physical properties are important factors when considering gasket design and the primary selection of a gasket type is based on the following: • Temperature of the media to be contained • Pressure of the media to be contained • Corrosive nature of the application • Criticality of the application Soft Cut Sheet...

Gasket Selection Critical Service RTJ type flange or > Class 600 Yes Flange intended for RTJ type Use SWG, Flexpro, or Weld Ring Critical Service Use SWG, Flexpro, Weld Ring, or Change Use LS, SWG, Flexpro, MRG, Weld Ring, or Change Use SWG, Flexpro, MRG, Weld Ring, Thermiculite® 815, ST/RGS3, or Change Select sealing material and metal type on basis of service, temperature, and medium. Soft cut gaskets should always be of the minimum thickness consistent with the style of the flanges to be sealed, and compatible with the medium.

Change Gasket EVERYTHING IS ABOUT TO CHANGE. Introducing the spiral wound gasket that reinvents the category. The spiral wound gasket that will forever change your operation. When we invented the spiral wound gasket in 1912 there was nothing like it. 100 years of innovation later, we introduce the Change gasket. And again there’s nothing like it. Incredibly robust and resilient, metal-wound Change heat exchanger gasket is designed to deliver the most dynamic seal ever. Manufactured with proprietary equipment, using a 5-times thicker metal spiral and a unique laser welding process that...

Change Gasket Across a 24-day, 24-cycle pressure thermal cycle test replicating industry application conditions, the Change gasket lost just 1 PSIG total. Never coming close to the failure point, it outperformed every other gasket tested by at least nine cycles. And there’s no telling how long it would have kept going if we hadn’t stopped the test. COMPRESSION VS. RECOVERY AT 18,000 PSI (124 MPa) GASKET STRESS Gasket Style The high level of stored energy gives the Change gasket extremely high recovery. In a compression test against other heat exchanger gaskets, the Change gasket recovered...

Sheet Materials With the shift to soft cut gaskets, gasket manufacturers have developed a myriad of products. Some of the initial materials developed proved inferior to their predecessors in regard to temperature, chemical resistance, creep resistance and sealing characteristics. Flexitallic has developed a wide range of compressed fiber gasket sheet products. Some of these products have been fiber reinforced grades, manufactured by the traditional calendering or sheeter process. Other product ranges are fiber-free and some of these materials have exceptionally good properties. Flexitallic...

Thermiculite® Exclusive to Flexitallic, this revolutionary material comprised of chemically and thermally exfoliated vermiculite simulates the structure of exfoliated graphite, with one notable exception – it maintains integrity through a wide range of extreme temperatures. Vermiculite’s thin, flexible, soft plates can be exfoliated like graphite. They retain the sealability and low porosity of graphite, but unlike graphite, Flexitallic’s Thermiculite® sheet materials will not oxidize at high temperatures. Graphite’s stress-loss due to oxidation has led to many examples of gasket failure....