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Standco Industries, Inc. P.O. BOX 87 Houston, Texas 77001 Phone: 713-224-6311 Toll Free: 800-231-6018 Fax: 713-229-9312		Sterling Rubber and Gasket Division Quality Engineered to Assure Performance Manufacturers of Spiroflex® spiral-wound gaskets that meet ASME B16.20, API, Military (Mil-G) or purchaser's specifications.  Sterling manufacturers metallic and semi-metallic gaskets in double jacketed, single jacketed, plain metal, corrugated and machined profile configurations.  Sterling also molds rubber products and are experts at rubber bonded to metal molded parts.  Sterling is equally adept at molding rubber products from EPDM, Viton®, silicone, butyl, nitrile, epichlorohydrin and neoprene to close tolerance requirements.  Mold design and fabrication services are available. Below is a table of our different types of Spiroflex® Gaskets.
TYPES DESCRIPTION FOR GR Spiral-wound sealing with outside gauge ring Raised face, plain or flat face, Van Stone, weld neck GR-IR GR with Inner Ring added Same as GR GR-RJ GR with dimensional changes API ring joint flanges RF-1 Dimensions and winding for Recessed Face Joint Large Male and Female Flanges RF-3 Recessed Face Large Tongue and Groove Flanges RF-4 Recessed Face Small Tongue and Groove Flanges RF-DJ Spiral-wound, Double Jacketed Partitions Heat Exchanger TEMA Flanges WL Wire Loop guides with spiral-wound sealing section Raised face, plain or flat face MH Manhole cover assemblies Boiler manway applications TC and HH Tube Cap and Hand-Hole assemblies Boilers VB Valve Bonnet seal Bolted bonnet valves   FEATURES CONSTRUCTION ADVANTAGES Alternating plies of spring-like metal and resilient filler. resiliency makes Spiroflex self-adjusting to temperature/pressure changes, vibration, fluctuating bolt load and minor flange separation microscopically penetrates bearing surface for multiple seal Solid metal outer ring. compression stop accurately centers the gasket in the flange adds radial strength to prevent any gasket blowout Corrosion-resistant metals. reduces risk of corrosion of flange face Multiple construction options in materials and filler design. suits any practical pressure/temperature combination Color-coded. ensures that the correct Spiroflex is being used - without removing the gasket from the flange.