The Hydraulic Tank Oil Filler Cap is fitted securely over the hydraulic tank port which provides a secure and leak-proof closure to prevent contaminants from entering the tank and maintains the tight sealing connection, which is integrated into the cap body to prevent oil leakage.Attributes:• Helps in reducing the risk of contamination or damage by the oil• Offers good resistance to corrosionApplications:The Hydraulic Tank Oil Filler Cap acts as a sealing and access point for adding hydraulic oil to the tank and securely locking the opening of the tank from entry of the external elements.