Strainrite offers liquid filter bags for a wide range of industry. The heritage of The Strainrite Companies is closely tied to the initial development of Filter Bag Technology. Our Founder, John H. Lapoint Jr., was an integral part of the team that conceived of, perfected, and proliferated, the original Filter bag. The Strainrite companies strives to apply the filtration expertise we’ve gained in over 30 years of partnership with of our customers, along with the innovation we’ve become known for, to manufacture classic, top quality, filter bags.