Rotary shaft seals (oil seals), which work on rotary shafts, are machine elements, used to prevent leaking out oil or grease and also prevent entering dust, dirt, mud or other particulates from the external environment. They are also used to seal non-greasy liquids, particulates and various gases, and also provide their essential functions in environments with an effective lubricant that allows the creation of oil film. ...

During the installation, if base (back side) of the rotary shaft seal first contacts the housing bore, a mounting tool should be used to push the seal from the inside. The stopper of the mounting tool should be as close to the outside diameter as possible in order not to deform the seal body and touch the lips. There shall be a stopper on the tool which allows the seal to be positioned as desired in the bore...

In the listing, marking and ordering rotary shaft seals, in other words, ‘when speaking about rotary shaft seals’, three basic sizes are considered: inner diameter (I.D.), outer diameter (O.D.) and height (or width). The order is also written in this order unless otherwise states, and ‘x’ or ‘-’ is used: e.g. 40 x 62 x 10 or 30-52-10...

The corresponding graph shows the permissible positive pressure values for a conventional pressure seal (e.g. KK-B) that operate on a shaft of approx. Ø40 mm...

They are basic static seals, used for covering the oil filling gap of reductors or gear boxes...