Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 500-18 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 500-18 It is listed as Spring Valve. component manufactured by Rotary Vacuum Pumps Inc, specifically under CAGE Code 55708. It is also accompanied by the NSN 5360008380452 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5360 Coil Flat Leaf and Wire Springs.