Aerospace O-ring family, silicone, AMS7267
AS9386 O-rings: silicone 70 to 80 to AMS7267
AS9386-XXX is a silicone (VMQ) O-ring made from AMS7267 material, the heat resistant, low compression set silicone in the 70 to 80 hardness class, in the standard AS568 size the dash names. AS9385-YY is the same material in the straight-thread boss sizes. Both SAE drawings and AMS7267 are current, and MS9386 and MS9385 are the legacy callouts.
- Polymer
- Silicone (VMQ)heat resistant, low compression set
- Durometer
- 70 to 80the AMS7267 class
- Current drawings
- AS9386B, AS9385A2021, 2020
- QPL
- Not statedSAE document
Specification: documents, status, material
| Item | Value | Source |
|---|---|---|
| Standard-size drawing | SAE-AS9386, packing, preformed, AMS7267, O-ring: Reaffirmed 2018; current revision AS9386B, 2021-07-07 | SAE Mobilus, read 2026-09-06 |
| Boss-size drawing | SAE-AS9385, packing, preformed, AMS7267, O-ring: Reaffirmed 2018; current revision AS9385A, 2020-10-26 | SAE Mobilus, read 2026-09-06 |
| Material document | SAE-AMS7267, rings, sealing, silicone rubber, heat resistant, low compression set (70 to 80): current AMS7267H, 2021-05-19 | SAE Mobilus, read 2026-09-06 |
| Legacy callouts | MS9386-XXX and MS9385-YY: superseded in use by the AS drawings; MS record status: ask with the quote | DLA ASSIST and SAE Mobilus, read 2026-09-06 |
| Base polymer | Silicone (VMQ) | document title |
| Durometer | 70 to 80, the hardness class in the AMS7267 title; manufacturers supply it at 75 | SAE Mobilus title; Parker® ORD 5700 (2021) |
| Slash sheets / classes | None | DLA ASSIST and SAE Mobilus, read 2026-09-06 |
| Boss variant | AS9385-YY, mapping to AS568-9YY; one manufacturer's 2024 cross-reference states the boss sizes now sit under the AS9386 number, which conflicts with SAE's 2020 reaffirmation of AS9385A, so both numbers are kept here | manufacturers' cross-references; SAE Mobilus |
| QPL | Not stated on the SAE pages read | DLA ASSIST and SAE Mobilus, read 2026-09-06 |
| Service | Heat resistant, low compression set (the AMS7267 title) | document title |
| Compounds manufacturers pair with this document | Parker ORD 5700 (2021) Table 8-4 pairs S0355-75 with AMS7267 in the 70 to 80 band | Parker ORD 5700 (2021) |
Status strings are quoted as DLA ASSIST and SAE Mobilus print them (Canceled is ASSIST's spelling; Inactive means inactive for new design; Withdrawn is SAE's word). Conquest Seal is a distributor and is not itself listed on any qualified products list.
Designator to AS568 size
AS9386-XXX is the AS568-XXX size and AS9385-YY the boss size AS568-9YY, per the manufacturers' cross-references. MS9386 and MS9385 carry the same dashes. The dash never changes the material.
| AS9386 | MS9386 | AS568 dash | ID in | W in | ID mm | W mm |
|---|---|---|---|---|---|---|
| AS9386-006 | MS9386-006 | AS568-006 | 0.114 | 0.070 | 2.90 | 1.78 |
| AS9386-010 | MS9386-010 | AS568-010 | 0.239 | 0.070 | 6.07 | 1.78 |
| AS9386-012 | MS9386-012 | AS568-012 | 0.364 | 0.070 | 9.25 | 1.78 |
| AS9386-112 | MS9386-112 | AS568-112 | 0.487 | 0.103 | 12.37 | 2.62 |
| AS9386-114 | MS9386-114 | AS568-114 | 0.612 | 0.103 | 15.54 | 2.62 |
| AS9386-116 | MS9386-116 | AS568-116 | 0.737 | 0.103 | 18.72 | 2.62 |
| AS9386-210 | MS9386-210 | AS568-210 | 0.734 | 0.139 | 18.64 | 3.53 |
| AS9386-214 | MS9386-214 | AS568-214 | 0.984 | 0.139 | 24.99 | 3.53 |
| AS9386-222 | MS9386-222 | AS568-222 | 1.484 | 0.139 | 37.69 | 3.53 |
| AS9386-325 | MS9386-325 | AS568-325 | 1.475 | 0.210 | 37.47 | 5.33 |
Millimeter values are converted from the inch table. The dash is a size lookup and never a material; the same dash on another family on the mil-spec hub is the same size in a different document. Full chart: AS568 size chart.
Where the documents stand
This family is SAE-native: both drawings name AMS7267 in their titles, so there is no MIL supersession chain. SAE reaffirmed both in 2018 and revised AS9385 to A on 2020-10-26 and AS9386 to B on 2021-07-07, and AMS7267 is at revision H of 2021-05-19. The MS9385 and MS9386 numbers on older drawings are the legacy callouts for the same two drawings.
One manufacturer's cross-reference states that the boss sizes have been folded into the AS9386 number, but SAE revised AS9385 to A in 2020, so this page keeps both numbers and quotes whichever the print reads.
The base polymer
The polymer behind this family is silicone (VMQ). The Parker O-Ring Handbook ORD 5700 family range on file for Silicone (VMQ) is -54 C to 204 C; that is the polymer family's range, not this document's requirement, and the compound sheet for the qualified grade governs. Parker notes that specification temperature limits do not necessarily represent operating temperature limits.
Material page: Silicone (VMQ) O-rings. Temperature ranges by family: O-ring temperature ranges.
How we quote this family
Send the designator as printed, AS9386-XXX or AS9385-YY (or the MS9386 / MS9385 form from an older drawing), with the dash, the quantity and the certification the order needs. We quote it supplied against the AS drawing in an AMS7267 silicone compound, with a certificate of conformance and lot traceability. If the print names a compound number, include it and we quote that compound.
Related pages
Other families: MS28775, M83461/1, M83248/1 and M83248/2, M83485/1, M25988/1, /2, /3 and /4, MS29513 and MS29512, NAS1611 and NAS1612, AS3582, AS3209 and AS3208.
Frequently asked
What material is an AS9386 O-ring?
Silicone (VMQ) made from AMS7267 material, the heat resistant, low compression set silicone sealing-ring document in the 70 to 80 hardness class; the AS9386 title names AMS7267 outright. Manufacturers supply it at 75, and Parker ORD 5700 (2021) pairs S0355-75 with AMS7267.
What is the difference between AS9385 and AS9386?
Size series. AS9386-XXX carries the standard AS568 sizes and AS9385-YY the straight-thread boss sizes, both on AMS7267 silicone. One manufacturer states the boss sizes now sit under AS9386, but SAE revised AS9385 to A in 2020, so quote whichever number the print reads.
What is AMS7267?
An SAE silicone rubber sealing-ring document, heat resistant with low compression set, 70 to 80 hardness, current at revision H of 2021-05-19. It is the material behind AS9386 and AS9385. It differs from AMS3304, the general heat and weather resistant silicone behind AS3582.
My drawing says MS9386; is that the same part?
MS9386 is the legacy callout for the AS9386 drawing on AMS7267 silicone, and MS9385 the legacy boss callout for AS9385. Ask with the quote for the MS records' status. Send the callout as the print reads it and we quote the AMS7267 part with the MS number noted on the paperwork.
Related guides
Sources
SAE Mobilus: AS9386B (2021-07-07), AS9385A (2020-10-26), AMS7267H (2021-05-19), read 2026-09-06; Parker O-Ring Handbook ORD 5700 (2021), Table 8-4, for the compound pairing; Manufacturers' aerospace cross-references (2024) for the standard-versus-boss split; AS568 dimensions from this site's size chart. Facts are stated in our own words and our own arrangement; no standard's text or table and no manufacturer's cross-reference table is reproduced. Compound pairings are the named manufacturer's published statements, not qualified products list entries.
Parker is a trademark of Parker Hannifin Corporation. No affiliation or endorsement is implied.
Need AS9386 and AS9385 with certification?
Send the designator as the print reads it, the dash, the quantity and the paperwork the order needs. A Conquest representative replies with the part quoted against the document.
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