DICHTOMATIK

1 :V-seals Faltblatt 14:41 Uhr Seite 1 DICHTOMATIKV-RingsDIN EN ISO 9001:2000 Albert-Schweitzer-Ring 1 D-22045 70 04 80 D-22004 HamburgPhone +49/40/66 98 90 Fax +49/40/66 98 91 Faltblatt 14:41 Uhr Seite 2 ContentsDichtomatik3V-Rings4 Standard dimensions from :V-seals Faltblatt 14:41 Uhr Seite 33 DichtomatikAny seal. Any time. DICHTOMATIK is known as a specialist intechnical seals and nothing but company's comprehensive rangeof products for industrial applications,its worldwide network of highly efficientproduction partners and its own developments make DICHTOMATIK a highly competent partner. Customersare guaranteed the best possible support in terms of speed, flexibilityand application ensure fast and punctual delivery toall parts of the world.

2 DICHTOMATIK hascontinuously expanded its network ofsubsidiaries, of which there are currently eight in Europe: in England,Sweden, the Netherlands, France, Austria, Hungary, Italy and the head office in Germany, as well as five locations in the USA and Canada. Carefully selected partners are responsible for Central and South America, Africa and DICHTOMATIK team is committed to living up to the corporate slogan "Any seal. Any time." It devotes all itsattention to the customer when dealing with everyday orders, obtaining a special seal or providingcomplex technical advice, we alwayswant the work we do to set on applications, designing in-stallation housings, altering designs,adapting standard seals to changes inambient conditions these are some ofthe daily demands we make of our application engineers.

3 As highly experienced seal specialists they are familiar with all questions regardingapplications and materials and theywork closely with customers and suppliers. Application-specific develop-ments and adaptations of constructionsand materials are just as much part ofthe job as supervising product seriesuntil they are ready for DICHTOMATIK website provides a virtual insight into the warehouse. Both the availability of all standard seals and technical information on theseal articles, including descriptions of materials and installation instructions,can be accessed Having been issued a personal password, customerscan view prices, make enquiries andplace orders around the :V-seals Faltblatt 14:41 Uhr Seite 4V-RingsV-Ringsare axial seals with an elastomer sealing element vulcanisedin the mould.

4 The typical design of a V-Ring is comprised of the body, the flexibejoint and the sealing lip. DesignsV-Rings are classified according totheir various profile designs. The following designs are available:VAstandard designVS with reinforced stiffening elementVLwith thin profile for reduced in labyrinth sealsVEfor large diametersThe time-consuming removal of shaftsand other components often results inthe necessity of using divided V-Rings are then vulcanised orglued on special applications, V-Rings canalso be produced with incorporatedgrooves including tightening materialsElastomer seal: NBR 60 black, FKM 60 brown, (FKM 70)other Elastomer materials are available on areasV-Rings are used mainly in combinationwith other types of seals such as rotaryshaft seals and as pre-sealing elementsfor bearings and shafts.

5 V-Rings are often applied in drive technology, in general mechanicalengineering and plant engineering. V-Rings are also found in electric engines, transmissions, agriculturalmachines, bearing pedestals and rolling are used to seal against dust,dirt, lubricant, oil or water spray fromthe outside. For rougher locational conditions, extensive exposure to masses of earth or gravel, we recommend the sealing elementsVRM01 and VRM02 metal case protected axial V-Ring serves as a lip seal but also as a centrifugal V-Ring is stretched onto the shaftand must be installed at an accuratelydefined distance from the counter-rotating metal surface to guaranteeaxial preload of the seal lip.

6 The end of a bearing, the bearing case ora shaft collar serve as counter-rotatingsurface. The V-Ring rotates with the shaft and seals axially on the counter increasing peripheral speed, theseal lip is pulled outwards by the VA VS VL VE Sealing lipBodyFlexibel joint4 Clamping strip withscrew :V-seals Faltblatt 14:41 Uhr Seite 5centrifugal force and the contactpressure is reduced. At a certain peripheral speed, the seal lip lifts off the counter metal surface completely. The V-Ring thenfunctions only as a gap seal and centrifugal disc. single function sealing element seals against dust, dirt, lubricant, oil or water spray works well in combination with rotary shaft seals low demands on the countersurface with regard to the surface quality simple installation is stretched ontothe shaft the dynamic friction reduces with increasing peripheral speed due tothe centrifugal force good dynamic sealing effect balances light axial movements as well as angle and rotary settings protects rotary shaft seals from abrasive environmental conditionsNBR: Good chemical resistance tomany lubricants and mineral.

7 Mineral oils and lubricants, engine, gear and ATF oils, fuels, aromatic and chlorinated hydro-carbon, resistance to a wide range of chemicals. Pressure: designed for unpressurizedoperationTemperature: NBR -40 C to +100 C FKM -20 C to +200 C Peripheral speed (m/s):NBR 8; axial secure from 8m;radial secure from 12 FKM ; axial secure from ;radial secure from 10 Advantages of the V-RingOperational application limits Material used for the counter-rotating partner MediaDesign note Counter surfaceThe V-Ring runs against a counter-rotating surface situated at right anglesto the shaft the flange cap or theend wall of a bearing counter surface should have a finely processed surface with a surface quality of max.

8 Ra= (sufficient for many applications). The counter-rotating surface need notbe hardened. Under difficult locationalconditions such as excessive dirt, masses of earth, fine-grained sand, aminimum hardens should be chosen. Inthis case, the hardness should be cho-sen in accordance with the medium tobe sealed and the material used for thecounter-rotating partner (see table).Parts made of injection-moulded or castlight metal alloys and formed steelsheets can be used as counter-rotatingsurface without additional , they must not contain anysurface variations or faults such assharp edges, burrs, bubbels, waviness,buckles or other damage. Material Advised HardnessMedia Carbon steel125 - 150 HVSludge, dustCast iron190 - 270 HVSludge, dustCast bronze100 - 160 HVWater, dust Injection-moulded aluminium90 - 160 HVWater sprayStainless steel 150 - 200 :V-seals Faltblatt 14:41 Uhr Seite 6 ShaftInstallationStorageAdmissible eccentricity mmThere are no particular demands on the shaft as, for example, is the case for rotary shaft seals forexample lead-in chamfers and specialroughness sealing function remains intact toa shaft deviation of approx.

9 1 .Dependent on the dimensions of the V-Ring, an eccentricity is permissible,see diagram (diagram eccentricity)which must be applied in order toenable correct installation of the V-Ring. The V-Ring is simple to install. It canbe stretched up to 20% onto the must be taken only againstdamage caused to the V-Ring by sharpedges, etc. Generally speaking, elastomers are suitable for storage. They remainalmost unchanged in their propertiesfor years, provided that certain minimum requirements regarding storage conditions are are described in DIN 7716 and ISO shaft >2004 The seals must be stored stress-free, tension, compression or otherforms of seals should be protected fromexcessive ventilation, especiallydraughts.

10 Storage in packaging, polyethylene bags or airtight containers, is storage location should be cool, dry, dust-free and moderately constant storage temperature is optimal. It should be no lower than -10 C and no higher than +20 in storage rooms should be screened and placed at a distance of at least 1m from the stored humidity should not exceed65%. Strong light, especially UV radiation and direct sunlight should devices that produce ozoneshould not be placed in storage roomsfor nominal dimensions mentioned onthe following pages represent the standard - :V-seals Faltblatt 14:41 Uhr Seite 7VA 50 NBRS izes metricPart No. TypeCdDh1Hd2d1H1123483 VA50 - - +1C+ VA50 - - C+1C+63 VA50 - - C+1C+63 VA50 - - C+1C+63 VA50 - - C+1C+63 VA50 - 88 - C+1C+63 VA50 - C+2C+ VA50 - C+2C+ VA50 - C+2C+ VA50 - C+2C+ - C+2C+ VA50-2019 - C+2C+126 VA50-2221 - C+2C+126 VA50-2524 - C+2C+126 VA50-2827 - C+3C+126 VA50-3029 - C+3C+126 VA50-3231 - C+3C+126 VA50-3533 - C+3C+126 VA50-3836 - C+3C+126 VA50-4038 - +3C+157 1123503 VA50-4543 - +3C+157 1123504 VA50-5048 - +3C+157 1123505