Click here to see all items or click the Search link to search by OEM part number. Mechanical Seals for Silverson® Mixers. OEM names, brands, model or part numbers are for identification purpose only. Our components are designed to provide performance and service life equal to or better than the OE part when properly installed and properly applied. Springer Parts carry a warrantee equal to the OE component. Silverson Mixers® is a registered trademark of Silverson Machines, Inc. Springer Pumps, LLC is not a representative of nor affiliated with Silverson Machines, Inc.