This is pressure –resistant oil seal, called TCV which is used for rotating shaft. It can sustain pressure up to 3 bar. It is often used in front of hydraulic pump.
NBR material can sustain temperature between-25 to 100°C

but FPM material can sustain higher temperature than NBR, up to 250°C

If you seeing the leakage problem from pressure. We recommend using these oil seal “TCV”& “TCN”. These two seals are suitable for pressure rotating shafts. For TCV look like a rubber edge, for pressure not over 3 bar. Meanwhile TCN, the pressure can go up to 10 bar. The different between NBR and FPM; NBR can sustain temperature from -25 to 120 °C. Rotating at 1200 rpm. FPM can sustain temperature from -20 to 250 °C. Rotating at 3500 rpm.

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