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3B Filters


3B Filters offers a large line of products including everything from interchange elements to custom high-pressure filter housing of varying industrial capabilities. We have experience working with many clients to meet their automotive, hydraulic/pneumatic, chemical, gas, cryogenic, coalescing, and other high/low viscosity filtration needs and we'd like to meet yours today!

3B Filters
Replacement Elements

Replacement Elements


Available in Cellulose, Glass Fiber, Stainless Steel wire mesh, coalescing, and sintered medias, 3B Filters maintains of a variety of replacement elements for high pressure t-type and inline assemblies. Contact us with your part number today for current availability on your fluid power and oil & gas filter replacement elements.

3B Filters Inc.

Provides High Quality, Dependable Filters Backed by Exceptional Customer Service


3B Filters Inc. has been providing high-pressure housings to the filter industry since 1978, and was incorporated in 2001 by Robert Dempster Sr., Robert Dempster Jr., and William Dempster. It is a subsidiary of Demco Products, which is a family run manufacturing business established in 1950 in the south suburbs (Oak Lawn) of Chicago. Our product series of mini in-lines, in-lines and large T-types constructed from aluminum and stainless-steel have been extensively used in the petroleum, aerospace, transportation, and chemical processing industries. 3B Filters can custom manufacture any of its filters to accommodate customer specifications, and all our solutions are compliant with the latest ISO 9001:2015 standards to ensure optimum quality and safety. We are always looking for new projects. Contact us today!

3B Filters are manufactured proudly in the United States in Oak Lawn, IL. 3B Filters ships globally to meet the needs of the ever evolving global market.