O-RINGS
44Pages

DICHTOMATIK O-RINGS FREUDENBERC INNOVATING TOGETHER

The information contained herein is considered to be reliable, but no assurances, warrants or guarantees whatsoever, of any kind, are provided with regard to its correctness or suitability for any purpose. The information reproduced herein is based on laboratory tests and is not necessarily indicative of the performance of the end product. Complete testing and the performance of the end product are the user’s responsibility

Industry-specific and customized service concepts 6 Product portfolio of the Dichtomatik brand 7 O-RINGS - A CLASSIC ON FUTURE COURSE 8 Comparative presentation of some elastomer properties 17 INSTALLATION SPACES AND DESIGN RECOMMENDATIONS 20

The Freudenberg Group was founded in 1849 and is still owned by the approximately 300 descendants of the c ompany founder. The resulting financial stability and social awareness are decisive success factors that create trust. Today, Freudenberg is a global, broadly diversified group of companies divided into Business Groups that operate in a wide variety of sectors. The company has always been c onsidered an innovation and technology leader, from Vileda® brand household products to technically complex sealing solutions. Freudenberg Sealing Technologies (FST) is the largest B usiness Group...

INDUSTRY-SPECIFIC AND CUSTOMIZED SERVICE CONCEPTS ONLINE ORDERING PLATFORM EASY The EASY online ordering platform enables easy order p rocessing, as well as price, delivery time and stock queries around the clock. Besides detailed product information, installation space and cross-sectional drawings are a vailable for download. The EASY Business Connector is used to transfer your orders directly to your SAP system. This ensures that you are always up to date on the status of your order. Register today if you do not yet have an EASY account. APPLICATION KNOW-HOW Dichtomatik products are also...

PRODUCT PORTFOLIO OF THE DICHTOMATIK BRAND STATIC APPLICATIONS TRANSLATIONAL MOVEMENTS The whole range of static seals – O-rings, cords, x-rings, cover seals, bolt seals, flange and profile seals, etc. – is available in a large number of dimensions – metric, inch and other international standards. The variety of materials, also with application-specific certifications, leaves nothing to be desired. Pistons and rod seals, wipers, guide belts and rings for hydraulics are available from stock in countless standard dimensions in the materials NBR, PTFE, TPU, hard fabric and NBR...

O-RINGS – A CLASSIC FOR MODERN TIMES O-rings are circumferentially closed, circular sealing e lements made of elastomeric materials and are produced by way of vulcanization in molds. The O-ring achieves its sealing effect by deforming the cross section after installation and pressing in the installation space and can be pressed radially or axially inside the installation space. In the operating condition, the media pressure strengthens the sealing function, since the elastomer material behaves like an incompressible fluid under pressure.

SPECIAL APPLICATIONS O-rings are mainly used to seal stationary machines and system components (static application) against liquid and gaseous media, e.g. flange and cover seals, pipe fittings and the cylinder head and base in hydraulic cylinders. Under c ertain conditions, O-rings can also be used for reciprocating, rotating and superimposed screw movements (dynamic application). If the installation space is designed properly, they are constructed properly and the correct material is chosen, pressures up to 1,000 bar can be sealed. If necessary, back-up-rings must be used. O-rings are used...

• Very stable in hot water and with steam, washing lyes, caustic soda and caustic potash, silicone oils and greases, many polar solutions, many diluted acids and chemicals • Good resistance to ozone Incompatible with mineral oil products (lubricants and fuels) • Good chemical resistance to mineral oils and greases, synthetic oils and greases, motor, transmission and ATF oils up to +150°C, fuels, HFD flame-resistant pressure fluids, aliphatic, aromatic and chlorinated hydrocarbons, water up to a maximum of +80°C • Very good weathering, ozone and aging resistance • Very low gas permeability...

Hardness Temperature [Shore A] [°C] Material characteristics transparent/ black transparent/ red-brown STANDARD DIMENSIONS SURFACE COATING Dichtomatik brand products are stocked in the standard dimensions of DIN ISO 3601-1 and AS568B/BS1806. In a ddition, different sizes of JIS 2401 (General Industry) and Norm R (NF T 47-501) are also available from stock. Dichtomatik O-rings are available on request with various surface coatings that are specially adapted to the application or the required properties. A surface coating can be used to make assembly easier, provide optimized abrasion...

QUALITY ASSURANCE For Dichtomatik brand products, we actively strive for product quality with a zero-defect target through coordination with customers and production. Our batch tracing system allows every step in the supply chain to be traced back and for statements to be made regarding product characteristics and ingredients. Batch information is p rovided on the product labels as well as on the corresponding delivery bills.

DIMENSIONAL INSPECTION SHAPE AND SURFACE TESTING The measurement of the inner diameter (Ø d1) is preferably performed with the help of non-contact optical measuring machines and measuring microscopes. For large dimensions, conical and step plug gauges are also used. For O-rings with an inner diameter of more than 250 mm, c ircumferential measuring tapes are also used. The O-ring cross section (cord thickness Ø d2) is measured with a force-reduced measuring probe. The contact force exerted between the probe surfaces should be 1 N. The dimensional tolerances are based on DIN ISO 36011,...

MATERIALS Dichtomatik O-rings are available in four standard and v arious special materials. Most of these are elastomer materials. The starting material for elastomers is rubber, which can be obtained as natural rubber but is now mainly produced as synthetic rubber in the chemical industry. Elastomers are differentiated by the underlying base polymer. The final material is produced by mixing the base polymer with appropriate fillers, plasticizers, processing aids, vulcanizing agents, accelerators and other additives. This process makes it possible to achieve the desired material properties...