Static ORing Sealing Parker Hannifi n Corporation • ORing Division 2360 Palumbo Drive, Lexington, KY Phone (859) † Fax (859) wwwparkeroringscom Parker ORing Handbook This type of crush seal is used where cost and ease of machining are important The ORing is confi ned in a triangular recess made by machining aThe oring gland design is very simple for face seals Simply cut out a circular groove into one of the plates and leave the other plate completely flat, the groove will have a square/trapezoidal cross section and the dimensions are conveniently already calculated and laid out in tables in the Parker Oring HandbookOring Groove Design in 3 easy steps Step 1 Choose whether you are working with existing hardware or designing new hardware Select the type of Oring groove piston, rod, face seal or trapped seal If the Oring size required is known, simply select the AS, BS or ISO standard (such as AS568) and enter the dash size reference
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O-ring face seal groove design
O-ring face seal groove design-Oring Vacuum Seal Dovetail &Design is a worldclass seal &
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XRing Seals and high performance ORing material groove design follows the same principals as basic ORing applications, although require even more attention to design adjustments for specific application environments for optimal sealing performance and lifeThread Sealant Vulcanized ORings ORing Splice Kits &Oring housing data for piston and piston rod sealing applications Type C Type D (0059) (0063) (0070) (0079) 2,40 (0094) 250 (0098) 2,62 (0103) 3,00 3,50 (0138) 3,53 (0139) 4,00 (0157) 5,00 (0197) 5,34 (0,210) (0224) 6,99 (0275) (0331) internal pressure 1
O'ring Groove Design As important as the o'ring seal itself is the groove that the o'ring seats into The groove must be designed to accommodate not just the o'ring size, but also its intended usage;For a bore (piston) seal QuadRing®The primary reason for using a Square Ring in a sealing application is that they perform the sealing function in a superior manner – and at a cost lower than any other comparable sealing device For existing applications, there is no need to change the design or procedures Square Rings fit in oring grooves and are interchangeable sizeforsize
ORing DimensionsParkerMeanNo 2 ID ±Seal assembly consists of an elastomer Oring and a gland An Oring is a circular crosssection ring molded from rubber (Figure 11) The gland — usually cut into metal or another rigid material — contains and supports the Oring (Figures 12 and 13) The combination of these two elements;The groove is in the 'ceiling' of the application, so I want that the oring is compressed into the groove to prevent it from falling out when the seal is opened The inside circumference needs to be sufficiently small to provide space for the oring to be squeezed
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Design and dimension the groove that your Oring will go into by researching our Oring Groove Design guide Step 5 Choose a standard size AS568 Oring using this Oring Size Chart Otherwise contact us and we can custom mold any size or shape Oring you needDesign Considerations Hardware geometry and limitations are the first consideration A traditional Oring groove shape is rectangular and more wide than deep This allows space for the seal to be compressed, about 25% (for static sealing), and still have some excess room for the seal to expand slightly from thermal expansion or swell from theThe OSeal has a round cross section like an Oring However the footprint of the OSeal is designed to match the shape of the groove The primary advantage of the OSeal is custom molding to fit the exact groove, eliminating the concern that comes with bending stress at the corners A smaller corner radii can be used for the groove, allowing
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Total indicator reading between groove and adjacent bearing surface All surfaces and corners must be free of tool marks and scratches ORing groove and dimensions may be calculated as follows (please refer to chart above) Given ExampleAS568B CS Depth Inches % Liquids Gases Radius004 to050Brand on the side of the groove opposite the pressure Click here for more information on face seal groove design Note the QuadRing®
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10 ORING SEALS – THEORY AND DESIGN PRACTICES Theory An oring seal consists of an oring and a properly designed gland which applies a predictable deformation to the oring The gland is basically a groove dimensioned to a certain height "H" and width "W" (Figure 1) to allow a fixed compression of the oringThe three main types of standard groove designs are Industrial Static also called Radial, Industrial Reciprocating also called Dynamic, and Face Seals also called Axial or Flange Radial and Dynamic seals require the presence of a diametrical clearance gap for installationBrand Groove Diameter = Max Bore Diameter – (2 X Recommended Gland Depth) For a face seal QuadRing®
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Shop our custom seals, gaskets, orings and more Seal &The face seal design chart below explains the hardware dimensions to use for an Oring seal when the groove is cut into a flat surface For designing systems which contain internal pressure, like the example below, the groove's outside diameter (OD) is primary, and the groove's width then determines the inside diameterWARNING Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the oring (Pi x R^2)Otherwise many bad things will happen to your design Make sure the squeeze % is sufficiently high enough to seal, but low enough to allow dynamic movements
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