a fluid reservoir assembly , for containing a fluid such as a lubricant is disclosed with a first end plate , a body and a second end plate . the body is preferably formed from plastic or glass . the end plates are composed of a molded plastic resin and are sealingly fastened to the body with an adhesive . the reservoir assembly has an inlet and outlet . depending upon the configuration of the end plates and body , reservoirs of various sizes , capacities and cross - sectional shapes can be fabricated without the need for dedicated molds and specialized tooling .