The Freudenberg-NOK Industrial Services Dichtomatik STU 3.773" x 4.139" x 0.074 IN H901B is a reliable oil seal designed for industrial use. With dimensions of 3.773 inches outer diameter, 4.139 inches inner diameter, and a thickness of 0.074 inches, this seal is crafted for optimal sealing performance. Constructed from high-quality materials, it provides excellent resistance to wear and environmental factors, ensuring durability. The H901B model is ideal for use in hydraulic systems, effectively preventing leaks and maintaining system integrity. This oil seal meets industry standards, making it a dependable choice for your equipment.