Double Lip Shaft Seal DS20284 (DS Metric Series), 20 mm ID x 28 mm OD x 4 mm Width, Rubber/Steel Single Unit for Rotary Shafts, Gearboxes, Hydraulic Systems, Engines, Sealed Ball Bearing Assemblies

Double lip shaft seal DS20284, single unit, 20 x 28 x 4 mm
✔️ ID 20 mm, OD 28 mm, Width 4 mm, Rubber/Steel, Double Lip, Metric

This rubber/steel double lip shaft seal is for rotary shafts and bearing housings. Sold as a single unit (each), it’s commonly used in gearboxes, pumps, engines, and sealed ball bearing assemblies.

✅ Model: DS20284, single seal unit
✅ Inner diameter 20 mm, outer diameter 28 mm, width 4 mm
✅ Material: rubber lip with steel case for low friction and durability
✅ Typical fits: rotary shafts, gearboxes, hydraulic systems, pumps
✅ Works with sealed ball bearing setups and linear slide unit end caps, helps protect ceramic surfaces

💡 What is a shaft seal used for in hydraulic systems and sealed ball bearing assemblies? A shaft seal keeps fluids in and contaminants out to protect bearings and moving parts. Short intro and quick takeaways: - Keeps lubricant inside housings and gearboxes to extend sealed ball bearing life and reduce wear - Prevents dirt, water, and debris from entering pumps, engines, and hydraulic units - Helps maintain low friction operation for smoother performance and longer service intervals - Handy for protecting ceramic bearing raceways and for use at linear slide unit end caps