The accessories for bearings are a large group of products including those required for quality installation, maintenance and repair of different kind- and purpose bearings. The following products are commonly referred to the said accessories: adapter sleeves, lock nuts, stuffing boxes and seals, lock rings and other parts. Some manufacturers produce themselves components for their exclusive products, but there are also universal products. The quality of accessories plays an important role since their reliability largely determines the efficiency and service life of the main product.