| Description | Tolerance | Apperance | Seal Selection & Design Considerations |
In order to suit your convenience to inquire TTO oil seals. The following sections will make a description on TTO oil seals. Basically there are seven parts regarding the description of oil seals. For example :
	m/m F1178 DCY 30 62 9 PA
The description in Inch System is different from that of Metric System. It usually uses three or four digits. For example :
	Inch H081 TA2 3.125 4.125 0.437 SI