Installing the Enviro Seal can be one of the most cost effective modifications made to your kiln or dryer. The Enviro Seal is a very effective seal with a simple mechanical design. Wearing parts such as shoes, cables, rollers, counterweights, graphite blocks and holder springs are not part of the Enviro Seal design. The only maintenance the Enviro Seal requires is the occasional replacement of worn out seal leaves. This provides a more effective product with lower operating and maintenance costs. Stainless steel spring leaves and heavy plate (3/8" to 1/2") are used in construction of the Enviro Seal. These materials resist damage from the high temperature environment of kiln operation. The inverted leaf design also addresses the three major causes of seal failure: run-out, expansion and abrasion. This design helps prevent trapping of the dust. Any dust accumulation falls into a hopper and can be reintroduced into the product flow in a continuous process. Other seal designs allow the dust to pack into the seal and bend the leaves.