Sandvik 886 304 49 Seal Kit

The seal kit, part 886 304 49, fails far more often because of how its seals are installed than because of the seals themselves. A lip seal rolled over a sharp thread edge, an O-ring twisted in its groove, or a seal pushed in dry will all start leaking within hours even though the rubber is new, and the leak is then blamed on the kit instead of the fitting.

Before the first seal goes in, chamfers and edges the seal will slide over should be checked and covered with tape or a fitting sleeve, and every seal should be coated with clean system fluid or the lubricant specified for it. Old seals and their contamination should be removed completely, and the whole set renewed together rather than mixing old and new, because a new seal beside a hardened one will carry more than its share of the pressure. Order by the exact part number so the sizes and compounds in the kit match the assembly being rebuilt. Stalroc quotes this Sandvik reference by part number and exports worldwide to mining, quarrying, and drilling contractors.