Revised: 10/31/2008 Provided links give access to illustrations and/or additional information. To return to this page use your browser back button. Ring Gasket Handling (Jump down to: Ring Gasket Condition, Ring Gasket Marking, SBX Ring Gasket, SRX Ring Gasket) API requires that manufacturers box or wrap ring gaskets but this provides no real assurance that they will arrive at the point of use undamaged. All ring gaskets finally seal by coining and intimate contact mandating that the seal contact area not have damage that will prevent continuous intimate contact after make-up and coining. Any bruise 1, gouge 1, (dent, ding, etc.) or groove 1 across the seal contact area may prevent uniform coining and continuous intimate contact, resulting in leakage in the area of damage. Any rough handling or impact contact against hard surfaces or objects may cause damage to a ring gasket that renders it unusable. Keep soft iron and carbon steel ring gaskets dry to prevent rust and pitting. Note: The plating on these ring gaskets will provide some rust protection for a short time but any extended storage in a damp atmosphere or wetness may destroy the usefulness of these gaskets. Stainless steel ring gaskets forgive wet conditions. Keep all ring gaskets in a secure area where other objects do not contact or bang 1 against them. Transport and handle them using care not to crush 1, bruise 1, or scar 1 them in any way. WOODCO USA recommends transporting all ring gaskets in separate boxes or soft padded containers. Before installing any ring gasket (and preferably before transporting to the installation site) inspect it carefully. Make certain the ring gasket stamped marking agrees exactly with that called for as fitting the intended connection (see Flange Slide Rule). Be sure no damage exists on, or across, the seal contact surfaces; See table and Illustrations below. Note: Ring gaskets marked SRX or SBX have identical measurements to RX and BX ring gaskets with the the same number designation, and they will fit the same corresponding connectors. The "S" indicates these gaskets have vent holes to allow reliable connector make-up underwater (subsea). API Spec 17D requires that manufacturers use only corrosion resistant alloy as the material for these gaskets. RING GASKET MARKING DATE OF MANUFACTURE 1 MANUFACTURERS NAME OR LOGO API MONOGRAM 2 RING GASKET TYPE AND NUMBER 3
SEAL AREAS ON RING GASKET TYPES
THE ARROWS INDICATE THE SEALING AREAS OF THE DIFFERENT TYPES OF RING GASKETS. IN THE CASE OF SUBSEA MAKE-UP, ANY WATER TRAPPED BETWEEN A RING GROOVE BOTTOM AND THE SEALING AREA OF AN SRX OR SBX GASKET CAN ESCAPE TO THE EQUIPMENT I.D. BORE. Making up ring joint connections of any kind represents considerable effort and uses valuable time, having a connection leak after make-up represents an unnecessary and avoidable waste. For more information about ring gaskets, see Ring Gasket Selection / Relation to Connection Material, Well Fluids and Application. For more information about ring gasket sealing, see Field Appraisal of Ring Grooves. For more information about flange connection make-up, see Flange Make-up, Stand-off and Drift. For the possible re-use of ring gaskets and the difficulty of further tightening after leak on test, see Test Rack Tips. For more information about hub connection assembly, see Instructions for Installation and Care in the Catalog for Clamps for Clamp Hub Connections.
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