Spiral Wound Gaskets
49Pages

Flexitallic L.P. 6915 Highway 225 Deer Park, TX 77536 USA Tel: 281 604 2400 Flexitallic Ltd. PO Box 3, Marsh Works Dewsbury Road, Cleckheaton West Yorkshire, BD19 5BT England Tel: 44 1274 851273 Flexitallic Sealing Technology (Suzhou) Co., Ltd. Building 3 South 688 Pangjin Road Wujiang Export Processing Zone Wujiang, Jiangsu P.R. China 215200 Tel: 86 512 6303 2839 http://www.flexitallic.com

CONTENTS MANUFACTURING UNITS GASKET IDENTIFICATION AVAILABLE GASKET MATERIALS GASKET SELECTION DIMENSIONAL DATA TABLE 1 - STYLE CG & CGI TO ASME B16.20 TO SUIT ASME B16.5 FLG - IMPERIAL SIZES TABLE 2 - STYLE CG & CGI TO ASME B16.2O TO SUIT ASME B16.5 FLG - METRIC SIZES TABLE 3 - INNER RING DIMENSIONS FOR STYLE CGI TO ASME B16.20 TABLE 4 - STYLE CG & CGI TO SUIT SMALL DIA SCREWED OR SLIP-ON FLG TABLE 5 - MAXIMUM BORE OF ASME B16.5 FLG TABLE 6 - STYLE CG & CGI TO ASME B16.20 TO SUIT LARGE DIA ASME B16.47 SERIES B FLG - IMPERIAL SIZES TABLE 7 - STYLE CG & CGI TO ASME B16.20 TO SUIT LARGE DIA...

MANUFACTURING UNITS Owned Manufacturing Plants Licensees - continuing Engineering & Chemical Productions Lagos State, Nigeria Tel: +234 1 804 3808 Flexitallic L.P. Deer Park,TX, USA Tel: +1 281 604 2400 Flexitallic Sealing Technology (Suzhou) Co., Ltd. Wujiang, Jiangsu, P.R. China Tel: +86 512 6303 2839 AGS Flexitallic, Inc. Edmonton, Alberta, Canada Tel: +1 780 466 5050 Joint Ventures Equiter S.A. de C.V. Guadalajara, Mexico Tel: +52 3 612 8483 Branch Offices & Warehouses Flexitallic Ltd. Aberdeen, Scotland, UK Tel: +44 1224 725241 Licensees Dragon Industrial Services Pembroke, UK Tel: +44...

INTRODUCTION FIRST AND FOREMOST The concept of spiral wound gasket construction was originated by Flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. The primary purpose for this development was the increasingly severe temperatures and pressures used by U.S. refinery operators in the first half of the century. Metal Strip Filler Material The necessity for a gasket to have the ability to recover cannot be over emphasized. The effects of pressure and temperature fluctuations, the temperature differential across the flange face, together with bolt stress...

GASKET IDENTIFICATION Gaskets are color coded to help expedite the selection and identity of the gaskets you need. The color on the outside edge of the centering ring identifies both the winding and filler materials. The metallic winding material is designated by a solid color. The filler materials are designated by color stripes at equal intervals on the outside edge of the centering ring. Flexitallic color coding meets the industry standard for metal and filler materials listed in ASME B16.20. METALLIC WINDING MATERIALS The metallic winding material is designated by a solid color...

AVAILABLE GASKET MATERIALS METAL WINDING STRIP Stainless Steel type 304 Stainless Steel FILLER MATERIAL Flexicarb® flexible graphite Flexite Super® Non-sintered PTFE prietary high-temperature, sealing material is comprised of chemically exfoliated and thermally exfoliated This revolutionary patented prod- uct simulates the structure of exfo- liated graphite but with one notable exception ... gaskets made with Thermiculite® maintain their integri- ty, even at extreme temperatures. Thermiculite is thermally stable, ensuring against thermal oxidation, GUIDE RING MATERIAL Carbon Steel Stainless...

GASKET SELECTION Style CG - Utilizes an external ring which accurately centers gasket on flange face, provides additional radial strength to prevent gasket blow-out and acts as a compression stop. A general purpose gasket suitable for use with flat face and raised face flanges up to and inclusive of class 2500. See note at bottom of page 8 for inner ring requirements. WHAT STYLE OF GASKET SHOULD I SELECT? Style CGI - A Style CG gasket fitted with internal ring which gives an additional compression limiting stop and provides heat and corrosion barrier protecting gasket windings and...

DIMENSIONAL DATA STYLE CG & CGI GASKETS TO SUIT STANDARD RAISED FACE AND FLAT FACE SPECIAL GASKETS Gaskets of special design can be engineered and fabricated using the same basic fundamentals of Flexitallic Spiral Wound Gasket design and construction to cover a wide range of applications in installations for which there are Special gaskets have been designed for valves, pumps, com- pressors, turbines, boilers, heat exchangers, etc. Consult with Flexitallic engineers as early in the design stage as possible. GOVERNMENT SPECI- Flexitallic Spiral Wound Gaskets are available in accordance with...

STYLE CG & CGI* TO ASME B16.20 TO SUIT ASME B16.5 FLANGES OUTSIDE DIAMETER OF SEALING ELEMENT INNER DIAMETER OF SEALING ELEMENT OUTER DIAMETER OF CENTERING RING DIMENSIONS IN INCHES. *For Style CGI - see Table 3 for Inner Ring dimensions Gasket sizes 1/4” to 3” Class 300, 400 & 600 as well as sizes 1/2” to 2-1/2” Class 900 & 1500 are identical within their respective nominal pipe sizes, therefore inventories need not be duplicated. In accordance with ASME B16.20, Inner Rings are mandatory for the following flange designations (see Table 3). Class 900 - NPS 24 to 48 Class 1500 - NPS 12 to...

STYLE CG & CGI* TO ASME B16.20 TO SUIT ASME B16.5 FLANGES OUTSIDE DIAMETER OF SEALING ELEMENT CLASS CLASS 150, 300, 900, 1500, 400, 600 2500 INNER DIAMETER OF SEALING ELEMENT OUTER DIAMETER OF CENTERING RING DIMENSIONS IN MILLIMETERS. *For Style CGI - see Table 3 for Inner Ring dimensions. Gasket sizes 1/4” to 3” Class 300, 400 & 600 as well as sizes 1/2” to 2-1/2” Class 900 & 1500 are identical within their respective nominal pipe sizes, therefore inventories need not be duplicated. In accordance with ASME B16.20, Inner Rings are mandatory for the following flange designations (see Table...

STANDARD INSIDE DIAMETERS OF INNER RINGS FOR STYLE CGI GASKETS TO ASME B16.20 TO SUIT ASME B16.5 FLANGES See Table 4 for small diameter screwed and slip-on flanges. NON PIPE SIZE DIMENSIONS IN INCHES & MILLIMETERS. In accordance with ASME B16.20, Inner Rings are mandatory for the following flange designations (see Table 3). Class 900 - NPS 24 to 48 Class 1500 - NPS 12 to NPS 24 Class 2500 - NPS 4 to NPS 12 All PTFE filled gaskets All flexible graphite gaskets unless otherwise requested by the customer ASME B16.20 does not include dimensions for NPS 1/4, 3-1/2, or 4-1/2, or Class 400 Flanges...