Oil seals or shaft seals cover a wide variety of applications including axles, engines, trailers and high-pressure environments. Generally oil seals are used to seal around a rotating shaft and provide protection from dirt intrusion while retaining an oil-based lubricant within the shaft. TCM® Oil Seal, TA, 3-1/8 in Inside Dia, 5.251 in Outside Dia, 70 Durometer, 0.438 in Width, -40 to 225 °F, Nitrile Lip, Import