An Idler Chain Adjuster Gasket is a seal that fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. It uses compression to provide a tight, leak-free seal between the Roller and the Cap.Attributes:• Provided with 4 mounting holes of size 9.5mm.• Manufactured to precise specifications and are built for durability, reliability, and productivity.• Withstands high temperatures and pressuresApplications:An Idler Chain Adjuster Gasket sits between and Roller and a Cap to prevent the leaks from system, preventing the ingress of dust or other contaminants.