The ME-68K5-MC vacuum truck filter element from Dynamic Filtration is constructed with metal end caps with vulcanized two-part urethane end seals. It helps remove atmospheric dust from the air intake, helping protect the blower from damaging particles. The metal end caps add durability, protecting the integrity of the filter shape and seal, prevent separation from filter material and fraying, create a more positive seal that eliminates bypass, and result in a 20 to 30 percent longer life. They have a 10-micron polyester filter medium. 800/265-4544; www.dynamicfiltration.ca.