For all you trailer owners and maintenance folks out there, this Tekonsha 5605 grease seal is one of those essential replacement parts you'll want to have on hand. With an outside dimension of 3.38 inches and interior dimension of 2.2 inches, this seal is designed to fit specific trailer brake systems perfectly. What's really great about Tekonsha products is their reputation for quality and reliability - they've been in the towing business since 1964, starting with RV stairs and steps and evolving into trusted trailer braking systems. This grease seal is part of that legacy of worry-free travel that professional towers and weekend warriors have come to depend on. The package includes two seals, which is super convenient because you can replace both sides at once or have a spare for future maintenance. When it comes to trailer safety and maintenance, having quality components like this grease seal is crucial for keeping everything running smoothly and safely on the road. Whether you're dealing with worn-out seals that need replacement or doing routine maintenance on your trailer brakes, this Tekonsha part delivers the quality and fit you need. It's one of those unglamorous but absolutely essential components that keeps your trailer braking system functioning properly. If you value safety and reliability in your towing equipment, having genuine Tekonsha replacement parts like this grease seal gives you peace of mind knowing you're maintaining your equipment with quality components from a trusted manufacturer with decades of experience in the industry.