Mil-Spec O-Ring Chart: Documents, Status and SAE Successors

We compiled this tracker from the public DLA ASSIST, SAE Mobilus and AIA records. Each row gives the status the record printed on the day we read it, the dates behind it, the successor or parallel document the records name, and the record with its read date. Status words are the records' own; where we did not read one, the row names the revision the record lists as current.

An SAE or AIA document can also carry a DoD adoption record in DLA ASSIST; where we read one, the row gives its status and dates too. A withdrawn adoption and an SAE cancellation are separate events, each with its own date, and where two official records point different ways, the notes under the table give both.

To order by part number, start at the mil-spec O-rings hub, which takes each designator to its family page; for a callout not listed here, ask with the quote. The O-ring part number cross-reference splits a callout into size and material.

Conquest Seal is a distributor. The parts are made by manufacturers, on the relevant qualified products list where the document has one, and Conquest Seal is not itself listed on any qualified products list. Orders are handled under Conquest Seal's AS9100D quality management system, whose certificate scope includes distribution.

Download this table as a PDF (revision 2026-09-29, with its source line).

License: CC BY 4.0. The table may be reused with credit to Conquest Seal Corporation and a link to conquestseal.com.

Where the records point different ways

MIL-DTL-25988 and SAE-AMS-R-25988. SAE cancelled AMS-R-25988 in August 2017 at revision A. DoD's notice of 2018-01-02 withdrew its adoption and named MIL-DTL-25988 as the superseding document, and SAE revised AMS-R-25988 to B in June 2023. MIL-DTL-25988D Notice 1 of 2025-06-11 then noted the MIL document in part superseded by SAE-AMS-R-25988 and inactive for new design. The four M25988 O-ring slash sheets read Active, each with a validation notice dated 2026-04-21 (DLA ASSIST, read 2026-09-24 and 2026-09-28; SAE Mobilus, read 2026-09-27).

SAE-AS9385. SAE cancelled AS9385 in October 2020 (AS9385A, 2020-10-26), and its record names no replacement. DoD withdrew its adoption on 2024-02-22 and named SAE-AS9386 as the superseding document (SAE Mobilus and DLA ASSIST, read 2026-09-27).

MIL-R-83248/1 and SAE-AS83248/1. DoD cancelled M83248/1 in 2008 and pointed future purchases to SAE-AS3209 (boss sizes to SAE-AS3208), in the sheet's Notice 5 of 2008-07-24. SAE later issued AS83248/1 (2014), which DoD adopted on 2025-11-03; no record names it as the sheet's replacement, so the table draws no supersession (DLA ASSIST, read 2026-09-24, 2026-09-25 and 2026-09-29; SAE Mobilus, read 2026-09-27).

Sources: DLA ASSIST document details and notices, read 2026-09-24 to 2026-09-29; SAE Mobilus public records, read 2026-09-24 to 2026-09-28; the AIA standards store, read 2026-09-27. Statuses, dates, revision letters and document numbers are restated as facts; no standard's text or table is reproduced. A status can change after the read date, so check the record before you order.

This second table gives one row per canceled military, MS or AN document behind O-ring, boss gasket, back-up ring, gasket sheet and sponge callouts, with the successor its record names, either in the DLA ASSIST title ("S/S BY" or "USE") or in the cancellation notice ("may refer to", "should refer to"). It also lists four documents often taken to be canceled that are not, and five SAE documents that SAE canceled or whose DoD adoption was withdrawn.

"Part numbers unchanged" means the notice keeps the old part number under the new document. Cancellation notices caution users to evaluate a replacement for their application, and a successor can itself be canceled or stabilized later, so each row also gives where the successor stands on its own record.

For the part numbers each drawing lists at each AS568 dash, see the mil-spec O-ring cross-reference by dash.

Download the successor table as a PDF (revision 2026-10-12, with its source line).

Successors: where the records point different ways

MIL-R-83485 and MIL-R-83485/1. DoD canceled both on 2002-10-23 and named SAE-AMS-R-83485 and SAE-AMS-R-83485/1. SAE canceled AMS-R-83485 in May 2014 and AMS-R-83485/1 in June 2015, while both DoD adoption records still read Active (DLA ASSIST idents 212262 and 212228, read 2026-09-29).

MIL-R-83248/2. Its DLA ASSIST title names SAE-AS3581 and SAE-AMS7259; the text of Notice 4 names SAE-AS3581 only. SAE issued AS83248/2 in December 2014 and DoD adopted it on 2025-11-03; the row states both records.

MIL-R-6855. DoD canceled it with Notice 1 of 1998-12-18 and reinstated it with Notice 2 of 2001-06-15; it is now MIL-PRF-6855 and Active. The 1998 notice had referred purchases to SAE AMS-R-6855, which SAE canceled in December 2010.

For MIL-DTL-25988, SAE-AS9385 and MIL-R-83248/1, see the status tracker's own notes, above this table.

Claims we checked and did not publish

MIL-P-5516. A DLA ASSIST document search returned no record, so no status is stated.

MIL-G-5514 superseded by SAE AS4716 or AS5857. No record says so; the record shows MIL-G-5514 inactive with no successor named.

MIL-R-83248/1 superseded by SAE-AS83248/1. No record says so.

SAE-AS9386 carrying the former AS9385 boss sizes. Only one manufacturer's literature says so; no record read for this table does.

ZZ-R-765 replaced by A-A-59588. Not confirmed on a record read for this table.

Sources: DLA ASSIST document details, cancellation notices and adoption records, read 2026-09-24 to 2026-09-29; SAE Mobilus public records, read 2026-09-24 to 2026-09-29. Statuses, dates, revision letters and document numbers are restated as facts; titles serve only as short identifiers, and no standard's text is reproduced beyond the short notice phrases quoted. A status can change after the read date, so check the record before you order.