This is an aftermarket replacement Corteco-NO 82019619NO NBR Cassette S3 Seal, designed to offer reliable sealing performance in demanding agricultural and industrial machinery. With precise dimensions of 136.8x165x13mm, this non-OEM alternative is engineered to meet or exceed the specifications of the original part, ensuring a secure fit and effective prevention of lubricant leakage and contaminant ingress. Crafted from NBR (Nitrile Butadiene Rubber), this cassette seal provides excellent resistance to oils, fuels, and various hydraulic fluids, making it suitable for a wide range of applications. The S3 design typically indicates a robust, multi-lip sealing system that offers enhanced protection against dust, dirt, and moisture, extending the lifespan of bearings and other critical components. This aftermarket seal is a cost-effective solution for maintaining the operational integrity and efficiency of your equipment, providing a durable and dependable alternative to OEM parts. Ideal for use in axles, transmissions, and other rotating shaft applications where robust sealing is paramount.