Specifications include, but are not limited to: Through this Request for Proposal (RFP) the Office of Purchasing & Contracting (hereinafter the “State”) is seeking to establish contracts with one or more companies that can provide Bridge Grease. ; Rust Proof Compound L is a solvent cut-back rust preventive for use on all ferrous and nonferrous metal surfaces subjected to corrosive atmospheres. Rust Proof Compound L is a grease-like product manufactured from petrolatum and a combination of special additives. It has a high level of rust inhibition and is smooth in texture. Rust Proof Compound L contains a solvent for ease of application and can be sprayed or brushed onto the metal surface. The solvent evaporates, leaving a durable, adhesive lubricant layer which protects metal surfaces from rust for long periods. Grease Rustproofing Compound. Grease rustproofing compound shall be a soft film type material made from petroleum combined with special additives to enhance its moisture displacing capabilities.