Bearing Depot & Supply stocks a full line of metric and inch size seals along with millimenter end caps. These grease seals are also called oil, fluid or dirt seals. These end caps and seals close spaces between stationary and moving components in mechanical equipment. The sealed parts help to prevent lubricant escape and keep out contaniments and dirt from entering the machinery or application. The seals are made of high-quality rubber with stainless steel or pressed steel springs for the best closure.