Aerospace Seals: Traceability and Paperwork

This page is about how an aerospace or defense seal order is supplied and documented: where the part comes from, what ships with it, and how the callout on the print is read. For aerospace O-rings by size and specification, see the aerospace O-rings page. Orders are handled under Conquest Seal's AS9100D quality management system, whose certificate scope includes distribution; for the O-rings and molded parts on this page, Conquest is the distributor, and each certificate names the manufacturer.

What an aerospace order ships with

Traceability from the print to the lot

The certificate of conformance ties each lot to the part number and specification on your purchase order and to the manufacturer that made it, so a part on your shelf traces back to its lot and its maker. Where the program calls for a first article inspection report, say so with the request; the AS9102 first article guide explains the three forms. The certificate behind the quality system, CONQ-001, is on the certificate page, and the quality and certifications page covers the documentation in full.

Specifications we supply against

By material: nitrile hydraulic O-rings to MIL-PRF-25732 (MS28775) and to AMS-P-83461 with the AS83461/1 drawing (M83461/1), fluorocarbon fuel and lubricant O-rings to AMS7276 (AS3209, M83248/1) and AMS7259, fluorosilicone to MIL-DTL-25988 and SAE-AMS-R-25988 (M25988), EPDM to NAS1613 for phosphate-ester systems, silicone to AMS 3304, and FFKM to AMS 7257. The fluorosilicone vs FKM guide compares the two in fuel service. When the print calls out a specification with a qualified products list, the part comes from a manufacturer on that list.

Statuses are read from the DLA ASSIST and SAE Mobilus records. A cancelled document is still a live part number; the table names the current document.

Document statuses come from the DLA ASSIST and SAE Mobilus records, read 2026-09-24 and 2026-09-25, SAE Mobilus's current-revision records for AS83461/1C and AMSR25988B 2026-09-27, the two M25988 DoD notices 2026-09-28, and the MIL-R-83248/1A cancellation notice (Notice 5) 2026-09-29; the NAS1613 row is from the Parker® O-Ring Handbook ORD 5700, page 8-5, read 2026-09-24. The compound detail for each family is on its own page under mil-spec O-rings. Facts are stated in our own words; no standard's text or table is reproduced.

Reading the callout

The dash number is the AS568 size and does not change between specifications; the prefix names the material document. A drawing that reads M83248/1 refers to a cancelled document: DoD cancelled M83248/1 in 2008 and pointed future purchases to SAE AS3209 (boss sizes to AS3208), and SAE later issued AS83248/1 (2014), which DoD adopted on 2025-11-03. The part is quoted against the number the print names, with that document and AMS7276 named on the certificate. A drawing that reads M83461/1 refers to a sheet cancelled in 2003; its successor, SAE-AMS-P-83461/1, was withdrawn in 2010 in favor of SAE-AS83461/1, so the part is supplied to AS83461/1 with AMS-P-83461, with both named on the certificate. A drawing that reads MS28775 refers to a part standard canceled in 2000 and carried, with the same part numbers, by SAE AS28775; its material document, MIL-PRF-25732, is inactive for new design but still maintained.

The dash number guide, the M83248 guide and the AMS7276 guide decode the common callouts; the quality page describes the paperwork. Crossing a callout like these to its current document is what the engineering support page describes.

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