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V-Packing, Series DMD 2

V-Packing, Series DMD 2

V-Packing, Series DMD 2

Product catalog summary
Overview: The document provides detailed technical specifications and guidelines for the DMD Dachmanschetten-Dichtsatz V-Packings, which are used for sealing piston rods and pistons. These V-packings are designed to enhance the sealing capabilities of hydraulic systems.
Specifications: The V-packings are made from form-stable plastics, improving the characteristics of conventional designs. Standard versions include pressure and support rings made of POM or PA, and V-packings made of fiber-reinforced NBR. The DMD1/DMD2 series includes additional NBR V-packings. The total width of the packing is adjustable by the number of V-packings used, up to five, and can be modified with distance rings if necessary.
Installation Guidelines: For piston rod sealing, it is recommended to use three or more V-packings. The width of the installation groove should match the V-packing width for non-adjustable spaces. For double-acting piston sealing, typically one V-packing per side is used, with groove width allowing for axial clearance.
Materials and Application: The document lists various materials used for the components, including NBR, POM, and alternatives like PTFE. The V-packings are suitable for high-sealing efficiency applications and can be used as replacements in existing systems.
Surface Finish and Fitting: The installation groove must be cleaned before fitting the seal. The support ring is inserted first, followed by the V-packings, and finally the pressure ring. Seals should be greased prior to fitting.
Technical Data: The document provides detailed dimensions and ordering information for various sizes of V-packings, with further dimensions available upon request.
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Catalog excerpts

V-Packing, Series DMD 2-1

DMD Dachmanschetten-Dichtsatz V-Packings Dachmanschetten-Dichtsatz V-Packings Die Hunger Dachmanschetten-Dichtsätze bilden eine Ergänzung unseres Programmes zur Abdichtung von Kolben und Stangen. Durch die besondere Geometrie kann der DMD innen- oder außendichtend eingesetzt werden. Hunger V-packings are an extension to the DFE product range for sealing piston rods and pistons. Due to their profile, V-packings can be used for both outside and inside sealing. Durch den Einsatz formstabiler Kunststoffe lassen sich die Eigenschaften der herkömmlichen DMD verbessern. The use of plastics with good stability of shape has improved the characteristics of conventional V-packings. Die Standard-Dichtsatz-Version enthält Druck- und Stützringe aus POM bzw. PA sowie Manschetten aus gewebeverstärktem NBR. Die Baureihen DMD1/DMD2 enthalten zusätzlich Manschetten aus NBR-Elastomer. Standard versions contain pressure and support rings of POM or PA and V-packings of fibre reinforced NBR. The DMD1/DMD2 series has additional NBR V-packings. Die Gesamtbreite ist durch den Einsatz von bis zu fünf Manschetten selbst zu bestimmen, ggf. können vorgeschriebene Einbaumaße durch Distanzringe angepaßt werden. The total width is determined by the number of V-packings used (up to five). Non-adjustable installation grooves can be compensated by distance rings, if necessary. Die Gesamtbreite errechnet sich wie folgt: The total width is calculated as follows: bGesamt = n • e + m + k (siehe nachfolgende Seiten). btotal = n • e + m + k. (see following pages). 252

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V-Packing, Series DMD 2-2

Dachmanschetten-Dichtsatz V-Packings DMD Die Druck- und Stützringe sind in ihrer Breite frei wählbar, die aufgezeigten Maße m und k sind nur Empfehlungen. The width of the support and the pressure ring can be adjusted to suit customer requirements. The stated dimensions m and k are recommended sizes only. Die Breite des Einbauraumes ist anwendungsabhängig. Sie kann der folgenden Seite entnommen werden. Depending on the application, the width of the installation groove can be determined from the following pages. DMD als Stangendichtung DMD used as rod seal H9 e8 D10 Bei Kolbenstangenabdichtungen...

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V-Packing, Series DMD 2-3

Dachmanschetten-Dichtsatz V-Packings DMD DMD als Kolbendichtung DMD used as piston seal Für die Abdichtung von beidseitig beaufschlagten Kolben ist der Einsatz von nur je einer Manschette üblich. Der Einbau erfolgt mit geringem axialen Spiel gemäß nachfolgender Tabelle: For double acting piston sealing, only one V-packing each side is normally used. The groove width should include axial clearance in accordance with the following table: Profilbreite B 5 6 7,5 10 12,5 15 Einbauraum b1 3-teiliger DMD b+0,5 b+0,5 b+0,8 b+0,8 Einbauraum b1 4-teiliger DMD b+0,6 b+0,6 Einführschräge e 254 3 5 b+1 b+1...

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V-Packing, Series DMD 2-4

Dachmanschetten-Dichtsatz V-Packings Werkstoffe Materials Druckring Standard DMD Stützring DMD 1/2/3 NBR-Gewebe NBR-Gewebe pressure ring support ring V-packing DMD 1/2/3 NBR-fabric NBR-fabric NBR, NBR-fabric Manschette NBR, NBR-Gewebe Standard DMD9 POM, PA POM, PA NBR-Gewebe DMD9 POM, PA POM, PA NBR-fabric DMD 1/2/3 PA PTFE-rein PTFE-Bronze PTFE-Glas siehe Druckring NBR, FPM, POM PTFE-rein PTFE-Bronze PTFE-Glas DMD 1/2/3 PA PTFE-pure PTFE-bronze PTFE-glass se e pressure ring NBR, FPM, POM PTFE-pure PTFE-bronze PTFE-glass DMD9 PA PTFE-rein PTFE-Bronze PTFE-Glas siehe Druckring NBR, FPM, POM PTFE-rein...

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