③ - A gasket, by definition, is a thin, usually circular, rubber or elastomeric material used to fill the space between two mating surfaces, preventing leakage from or into the joined parts. The term 'thin rubber gasket' refers specifically to those with minimal thickness, often less than a millimeter, yet their impact is disproportionately large.
Table 8: Housing design checklist




Size #: Corresponds to sizes found on our Oil Seal Size Chart. The interactive chart will display matching sizes based on the dimensions input for Shaft, Bore, and Width. The Oil Seal Size # is hyperlinked to our online store, which will display all sizes matching the selection.
ERIKS type R (type A according to the DIN standard) is identical in shape to type M, but has a rubber outer case with metal reinforcement on the inside. The rubber creates a good seal in the housing, even if the housing has suffered minor damage or is not in its best condition for other reasons. The RST version has a dust lip. These types are often chosen to replace a type with a metal outer case because they are easier to install and can cope with minor damage to the groove, such as scratches.
Installation tips for oil seals
Rubber oil seals with a rubber fabric outer case
In order to use the oil seal reasonably, the following points should be paid attention to:
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3. TEMPERATURE: Similar to the pressure level, you need to know what temperature your machinery can operate at. You need to choose a seal that can withstand the heat or cold. PTFE have the widest rang of temperature, making them a safe option when you are uncertain of the range.