Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 81-A3-521 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 81-A3-521 It is listed as Retainer Oil Seal. component manufactured by States Electronics Bludworth Marine, specifically under CAGE Code 29273. It is also accompanied by the NSN 5330013511350 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5330 Packing and Gasket Materials.