The most common oil seals are the ERIKS types R, RST, M and MST, which correspond respectively to types A, AS, B and BS according to DIN 3760/ISO 6194.
Different types of rotary shaft seals are available in the market, including radial lip, axial lip, and mechanical face seals.
Without minor lip
Type code
In this an auxiliary lip is provided along with the regular sealing lip. The additional dust lip protects the main sealing lip against dust and other fine solid contaminants and therefore this type is recommended for use in polluted environments. To achieve a long lifetime a suitable lubricant between the two sealing lips should be applied.
Make sure the fuel-pipe connections are clean. Unplug them and reconnect to the pump.