METAL SEALS MASTER
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METAL SEALS TECHNICAL CATALOG

TECHNETICS GROUP EnPro Industries companies

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies Technetics Group engineers will partner with you to develop and test solutions for your toughest sealing applications whether you are in the design stage for a new project or trying to solve an existing problem. DESIGN FOR ASSEMBLY • 3D models of parts and assemblies produced in SolidWorks ANSYS COMPUTATIONAL ANALYSIS • Nonlinear mechanical behavior of metallic, elastomer and composite materials • Contact stress evaluation • Creep relaxation in joint assemblies • Multi-axial...

SEAL SELECTION GUIDE BY PERFORMANCE SEAL TYPE Application Information HELICOFLEX® E-FLEX™ U-FLEX™* Machined Seal* Ultra High Vacuum Application Legend Recommended - Excellent Recommended - Good Optional - Special Design Not Recommended High Pressure Cryogenic Temperature Leak Legend Seal Load: Wall Thickness or Spring Load Surface Finish: Seal and Cavity Surface Treatment: Coating/Plating/Jacket Material Shaped Seals Helium Spring Back Actual leak rate in service will depend on the following: High Temperature Approximate Leak Rates per meter of circumference ≤ 25 cc/min @ 50 psig Nitrogen...

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies SEAL SELECTION GUIDE BY MARKET/APPLICATION Application_Section Fuel Nozzles E-FLEX™ C-FLEX™ HELICOFLEX® Casing/Cowling E-FLEX™ Fuel Delivery MS O-Rings K-Port Seal V-Band Coupling E-FLEX™ C-FLEX™ HELICOFLEX® QDS® Compressor Discharge E-FLEX™ HELICOFLEX® C-FLEX™ Electronic Enclosures DELTA® HELICOFLEX® C-FLEX™ Rocket Engine & Turbo Pumps E-FLEX™ HELICOFLEX® C-FLEX™ MS Standards MS O-Rings C-FLEX™ DEFENSE Weapons...

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies SEAL SELECTION GUIDE BY MARKET/APPLICATION Application Section End Point Windows DELTA® Chamber Lids DELTA® Exhaust Lines QDS® DELTA® Injectors DELTA® Machined Seal* Bulkhead Connections DELTA® Gas Delivery System Machined Seal* Mass Flow Controllers Machined Seal* DELTA® Valve Manifold Box (VMB) Machined Seal* Gas Isolation Box (GIB) Machined Seal* Turbo Pumps DELTA® Ampoules DELTA® Chemical Canisters DELTA® NATIONAL LABORATORIES...

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies SEAL SELECTION GUIDE BY MARKET/APPLICATION Application Section POWER GEN: INDUSTRIAL TURBINES Fuel Nozzles HELICOFLEX® C-FLEX™ E-FLEX™ Cooling Steam HELICOFLEX® C-FLEX™ E-FLEX™ Casing E-FLEX™ HELICOFLEX® Fuel Delivery MS O-Rings* Boss Seal* V-Band Coupling U-FLEX™* C-FLEX™ E-FLEX™ QDS® Compressor Discharge HELICOFLEX® C-FLEX™ E-FLEX™ Electronic Enclosures DELTA® HELICOFLEX® C-FLEX™ Rocket Engine & Turbo Pumps E-FLEX™...

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies The sealing principle of the HELICOFLEX® family of seals is based upon the plastic deformation of a jacket of greater ductility than the flange materials. This occurs between the sealing face of a flange and an elastic core composed of a close-wound helical spring. The spring is selected to have a specific compression resistance. During compression, the resulting specific pressure forces the jacket to yield and fill the flange imperfections while ensuring positive contact with...

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies TYPICAL CONFIGURATIONS CLASSIFICATION OF SEAL TYPE Cross Section Type HN 2 0 8 Cross Section # Jackets/ Jacket Section Type Lining Orientation Orientation HNDE290 Leak check -Insert Gas Purge TECHNETICS GROUP EnPro Industries companies sales@technetics.com technetics.com

PERFORMANCE DATA THE INTRINSIC POWER OF THE SEAL CHARACTERISTIC CURVE Linear load (lbs/in) Y1 = load on the decompression curve below which leak rate exceeds required level e2 Y2 = load required to reach optimum compression e2 Y0 = load on the compression curve above which leak rate is at required level The compression and decompression cycle of the HELICOFLEX® seal is characterized by the gradual flattening of the compression curve. The decompression curve, which is distinct from the compression curve, is the result of a hysteresis effect and permanent deformation of the spring and jacket....

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT HELIUM SEALING BUBBLE SEALING GROUP EnPro Industries companies Material Section f lbs/inch lbs/inch PSI PSI °F °F Copper, Soft Iron, Mild Steels and Annealed Nickel Nickel, Monel, Tantalum TECHNETICS GROUP sales@technetics.comEnPro Industries companies technetics.com 11

TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT TABLE OF CONTENTS HELICOFLEX® DELTA® O-FLEX™ C-FLEX™ E-FLEX™ NUCLEAR RPV K-PORT GROUP EnPro Industries companies LOAD CALCULATIONS DEFINITION OF CHARACTERISTIC VALUES DjMean reaction diameter of the seal. (For a double section seal, Dj = Dj1 + Dj2) _inches Y2 Linear load corresponding to e2 compression _Lbs/inch Y1 Linear load on the seal to maintain sealing in service at low pressure (=Ym1) _Lbs/inch Pu Intrinsic power of the seal under pressure at 68°F (20°C) when the reaction force_ PSI...