Sealing technology manual for the process industry - General installation and assembly instructions

GENERAL INSTALLATION AND ASSEMBLY INSTRUCTIONS Cleanliness For all types of seals, it is imperative that both the installation space and the seal itself are clean. Metallic processing residues, such as particles and cuttings, are particularly dangerous Sealing surfaces The sealing surfaces must at least have the surface roughness indicated in the catalogs. Check for scratches, gouges and cavities Surrounding area If seals have to be stretched and pushed over sharp edges or threaded surfaces during installation, these should be rounded off or covered with protective sleeves Storage conditions Prior to installation, ensure that the seal was properly stored. If the seal is individually wrapped, do not remove it from its package until you are ready to install it (see page 25) Assembly aids It is always important to ensure that mounting tools and other aids do not damage the seal or the installation space. Installation sleeves, expansion mandrels, chamfers on pistons and cylinders and rounded brass pins are well-suited. A screwdriver is not a suitable assembly tool Lubricants If the use of lubricants is required for assembly or installation, it must be verified whether the seal material is resistant to the lubricant Positioning For many seals (e.g. U-packings and radial shaft seals), it is important to install them with the correct positioning/ in the correct direction GENERAL INSTALLATION AND ASSEMBLY INSTRUCTIONS Appendix 94

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