Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number GRC27-21 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 GRC27-21 It is listed as O Ring. component manufactured by Congoleum Corp, specifically under CAGE Code 89908. It is also accompanied by the NSN 5331001752880 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC .