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For example the T Type seal and the C Type Seal are frequently combined to give TC type seals.
This results in an oil seal wher the metal insert is enveloped in rubber and has a dust lip.
The most common oil seal type combinations are: TC, SC, DC. KC, VC, KA, OC, OV, OA. Also, KOK are more than capable at producing oil seals according to customer requirements.
