Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number M40X52X7R21 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 M40X52X7R21 It is listed as Seal Plain. component manufactured by Pioneer Weston, specifically under CAGE Code U0848. It is also accompanied by the NSN 5330013654173 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5330 Packing and Gasket Materials.