# TIMKEN 21247-8903 Large Bore Seal The TIMKEN 21247-8903 Large Bore Seal is engineered to provide superior sealing performance in a variety of demanding applications. Designed specifically for large bore systems, this seal utilizes advanced NBR (Buna-N) nitrile rubber construction, ensuring reliable operation under challenging conditions.
Key Features • **Material Composition**: Constructed from high-quality NBR (Buna-N) rubber, offering excellent resistance to oils, chemicals, and abrasion. • **Single Lip Design**: Features a single lip configuration that effectively prevents the ingress of contaminants while retaining lubricant. • **Garter Spring**: Equipped with a garter spring that enhances sealing effectiveness, ensuring consistent pressure against the shaft for improved sealing performance. • **Temperature Range**: Operates effectively within a temperature range of -40°F to 250°F (-40°C to 121°C), providing versatility in various environments. • **Easy Installation**: Designed for straightforward installation, minimizing downtime and maintenance efforts in operational settings.
Applications • **Automotive**: Ideal for use in vehicle differentials, transmissions, and transfer cases where large bore applications are prevalent. • **Industrial Machinery**: Suitable for various industrial equipment, including pumps, motors, and gearboxes that require reliable sealing solutions. • **Compatibility**: Works effectively with a range of shaft materials and diameters, making it a versatile choice for many industrial and automotive applications.
Benefits • **Enhanced Reliability**: The robust construction and design features ensure a long service life, reducing the need for frequent replacements. • **Improved Efficiency**: By preventing oil leaks and contamination, this seal helps maintain optimal performance of machinery and equipment. • **Cost-Effective Solution**: Durable and reliable, the TIMKEN 21247-8903 seal reduces maintenance costs and extends the opera