DMD 9

DMD 9
1 / 16 PagesView full catalog

DMD 9

Product catalog summary
Overview: The document outlines the technical specifications and guidelines for DMD V-Packings, which are used for sealing piston rods and pistons. These packings are part of the Hunger product range and are designed to improve sealing efficiency through their unique geometry and material composition.
Specifications: DMD V-Packings are suitable for both internal and external sealing. They are constructed from shape-stable plastics, enhancing the properties of conventional V-packings. The standard version includes pressure and support rings made from POM or PA, and V-packings made from fiber-reinforced NBR. The DMD1/DMD2 series features additional NBR V-packings. The total width of the packing is determined by the number of V-packings used, up to five, and can be adjusted with distance rings if necessary.
Installation Guidelines: For piston rod sealing, it is recommended to use three or more V-packings. The installation groove width should match the V-packing width for non-adjustable spaces. For double-acting piston sealing, typically one V-packing per side is used, with the groove width allowing for axial clearance.
Materials and Application: The document lists materials such as NBR, POM, and PA for the components, with alternatives available upon request. The V-packings are suitable for hydraulic cylinder repairs and applications requiring high sealing efficiency.
Design and Surface Finish: Recommendations for surface finish quality are provided, including specific Ra and Rt values for sliding surfaces and groove bases. The construction elements of the packing include a pressure ring, fabric packing, and support ring.
Ordering Information: Tables with dimensions and reference numbers for ordering standard and custom configurations of the DMD V-Packings are included. Pressure and support rings can be manufactured in any requested width, with further dimensions available upon request.
Components: Each packing set consists of a pressure ring, fabric packing, and a support ring. Examples of standard configurations, including the number of each component required, are provided.
Customization: Pressure and support rings can be customized in any requested width to meet specific application needs.
Order Examples: Examples of standard orders are included, detailing the composition of each set with reference numbers for easy identification and ordering.
See more

Catalog excerpts

DMD 9-1

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).

 Open the catalog to page 1
DMD 9-2

Dachmanschetten-Dichtsatz V-Packings 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. Bei Kolbenstangenabdichtungen ist der Einsatz von 3 und mehr Manschetten zu empfehlen....

 Open the catalog to page 2
DMD 9-3

Dachmanschetten-Dichtsatz V-Packings 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:

 Open the catalog to page 3
DMD 9-4

Dachmanschetten-Dichtsatz V-Packings Werkstoffe Materials Druckring pressure ring support ring PA PTFE-rein PTFE-Bronze PTFE-Glas siehe Druckring NBR, FPM, POM PTFE-rein PTFE-Bronze PTFE-Glas PA PTFE-pure PTFE-bronze PTFE-glass NBR, FPM, POM PTFE-pure PTFE-bronze PTFE-glass PA PTFE-rein PTFE-Bronze PTFE-Glas siehe Druckring NBR, FPM, POM PTFE-rein PTFE-Bronze PTFE-Glas PA PTFE-pure PTFE-bronze PTFE-glass NBR, FPM, POM PTFE-pure PTFE-bronze PTFE-glass Application Range StandardHydrauliköl Öl-Wasser Wasser-Glykol standard hydraulic oil, oil-water water-glycol Design Hints Surface Finish Surface...

 Open the catalog to page 4
DMD 9-5

Dachmanschetten-Dichtsatz V-Packings Druck- und Stützringe können in beliebiger Breite gefertigt werden. Pressure and support rings are available in every requested width. Bestellbeispiel für Standardausführung / Order Example for standard version: 7-teiliger / 7-part DMD Ø 22/32x18,5 bestehend aus/consisting of bestehend aus/consisting of bestehend aus/consisting of Best.-Nr./Ref.No.: 031727 Best.-Nr./Ref.No.: 031728 Best.-Nr./Ref.No.: 031729 5 Manschetten/fabric-packings 1 Stützring/support ring 1 Druckring/pressure ring support ring pressure ring Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No....

 Open the catalog to page 5
DMD 9-6

Dachmanschetten-Dichtsatz V-Packings Dichtsatz ist aus folgenden Elementen zusammenstellbar: 1. Druckring 2. Gewebemanschette 3. Stützring Packing to be composed of the following elements: 1. pressure ring 2. fabric packing 3. support ring Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. 10 Best.-Nr./Ref.No. Weitere Abmessungen auf Anfrage lieferbar. support ring pressure ring Further dimensions...

 Open the catalog to page 6
DMD 9-7

Dachmanschetten-Dichtsatz V-Packings Druck- und Stützringe können in beliebiger Breite gefertigt werden. Pressure and support rings are available in every requested width. Bestellbeispiel für Standardausführung / Order Example for standard version: 7-teiliger / 7-part DMD Ø 40/60x38,5 bestehend aus/consisting of bestehend aus/consisting of bestehend aus/consisting of Best.-Nr./Ref.No.: 031820 Best.-Nr./Ref.No.: 031821 Best.-Nr./Ref.No.: 031822 5 Manschetten/fabric-packings 1 Stützring/support ring 1 Druckring/pressure ring support ring pressure ring Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No....

 Open the catalog to page 7
DMD 9-8

Dachmanschetten-Dichtsatz V-Packings Dichtsatz ist aus folgenden Elementen zusammenstellbar: 1. Druckring 2. Gewebemanschette 3. Stützring Packing to be composed of the following elements: 1. pressure ring 2. fabric packing 3. support ring support ring pressure ring Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No. Weitere Abmessungen auf Anfrage lieferbar. Further dimensions...

 Open the catalog to page 8
DMD 9-9

Dachmanschetten-Dichtsatz V-Packings Druck- und Stützringe können in beliebiger Breite gefertigt werden. Pressure and support rings are available in every requested width. Bestellbeispiel für Standardausführung / Order Example for standard version: 7-teiliger / 7-part DMD Ø 80/105x48,5 bestehend aus/consisting of bestehend aus/consisting of bestehend aus/consisting of Best.-Nr./Ref.No.: 031937 Best.-Nr./Ref.No.: 031938 Best.-Nr./Ref.No.: 031939 5 Manschetten/fabric-packings 1 Stützring/support ring 1 Druckring/pressure ring support ring pressure ring Best.-Nr./Ref.No. Best.-Nr./Ref.No. Best.-Nr./Ref.No....

 Open the catalog to page 9

Archived catalogs

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.