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Text version of the page
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| O-Ring | ||||||||||||||||||||||||||||||||||
| A General information | ||||||||||||||||||||||||||||||||||
| A.1 Description O—Rings offer the designer an efficient and economical sealing element for a wide range of static or dynamic applications. Inexpensive production methods and its ease of use have made the O—Ring the most widely used seal. A wide choice of elastomer materials for both standard and special applications allow the O—Ring to be used to seal practically all liquid and gaseous media. O—Rings are vulcanised in moulds and are characterised by their circular form with annular cross section. The dimensions of the O—Ring are defined by the inside diameter d1 and the cross section d2 (Figure 1). Cross sections of approx. 0.35 to 40 mm and inside diameters up to 5,000 mm and more are available. | A.2 Applications O—Rings are used as sealing elements or as energising elements for hydraulic slipper seals and wipers and thus cover a large number of fields of application. There are no fields of industry where the O—Ring is not used. From an individual seal for repairs or maintenance to a quality assured application in aerospace, automotive or general engineering. The O—Ring is used predominantly for static sealing applications: - As a radial static seal, e.g. for bushings, covers, pipes, cylinders - As an axial static seal, e.g. for flanges, plates, caps. O—Rings in dynamic applications are recommended only for moderate service conditions. They are limited by the speed and the pressure against which they are to seal: - For low duty sealing of reciprocating pistons, rods, plungers, etc. - For sealing of slowly pivoting, rotating or spiral movements on shafts, spindles, rotary transmission leadthroughs, etc. | |||||||||||||||||||||||||||||||||
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| Figure 1 O—Ring dimensioning | ||||||||||||||||||||||||||||||||||
| Advantages Compared with other sealing elements, the O—Ring has a wide range of advantages: - Simple, one piece groove design reduces hardware and design costs - Compact design allows smaller hardware - Easy, foolproof installation reduces risk - Applicable to a wide range of sealing problems, static, dynamic, single or double acting - Wide compound choice for compatibility with most fluids - Ex stock availability of many sizes worldwide for easy maintenance and repair. | ||||||||||||||||||||||||||||||||||
| W//A | ||||||||||||||||||||||||||||||||||
| Latest information available at www.tss.trelleborg.com Edition June 2008 | ||||||||||||||||||||||||||||||||||
| TRELLEBORG SEALING SOLUTIONS | ||||||||||||||||||||||||||||||||||
| 3 | ||||||||||||||||||||||||||||||||||