Bearing Seals, Shields & End Covers Seals and shields keep contaminants from reaching the interior of a bearing and retain bearing lubrication. Metal shields, rubber non-contact seals, Teflon non-contact seals, and rubber contact seals increase sealing performance.Bearing shields and seals Ball and roller bearings are available with different types of shields and seals. These are commonly referred to as closures. Closures can extend bearing life by preventing contaminants from reaching the critical surfaces inside the bearing, and they help retain the lubricant in the bearing.

Bearing Closures - Bearing Seals and Bearing Shields. Ball and roller bearings are available with different types of shields and seals. These are commonly referred to as closures. Closures can extend bearing life by preventing contaminants from reaching the critical surfaces inside the bearing, and they help retain the lubricant in the bearing.