SAE AS9772A-2025 PDF

Full title and description

SAE AS9772A-2025 — O-Ring Machined from AMS3617 Material. This technical standard defines the requirements for O-rings machined from AMS3617 polyamide (nylon) material, covering dimensional and visual quality, lot acceptance, and packaging/labeling for procurement and supply in aerospace applications.

Abstract

AS9772A specifies dimensional tolerances, acceptable visual quality criteria, lot and sampling requirements, and packaging and labeling provisions for O-rings produced by machining AMS3617 polyamide material. The standard is intended to support consistent procurement, inspection, and supplier acceptance of machined polyamide O-rings used in aerospace components and assemblies.

General information

• Status: Reaffirmed (active).
• Publication date: Reaffirmed July 17, 2025 (AS9772A-2025 / release date shown as 01 July 2025 on distribution listings).
• Publisher: SAE International.
• ICS / categories: Aerospace standards; Seals and gaskets; Polymers and plastic parts; Procurement and inspection requirements.
• Edition / version: AS9772A (2025 reaffirmation; previous revision January 2020; original issue May 1998).
• Number of pages: 11 pages.

Scope

This document establishes dimensional and visual quality requirements, lot/sample acceptance criteria, and packaging and labeling requirements specifically for O-rings machined from AMS3617 polyamide material. It is intended for use in procurement, supplier acceptance, and incoming inspection to ensure parts meet the material and form-factor expectations for aerospace applications.

Key topics and requirements

• Defined dimensional tolerances and critical feature limits for machined O-ring geometry.
• Visual quality and defect acceptance criteria (surface finish, voids, flash, machining marks) for AMS3617 polyamide O-rings.
• Lot identification, sampling plans, and lot acceptance/traceability requirements for procurement and inspection.
• Packaging, labeling, and marking requirements to preserve material integrity and support traceability during storage and delivery.
• Material identification and conformance to AMS3617 (polyamide/nylon) material specification as the required base material.
• Use of the standard for supplier contracts, purchase orders, and quality assurance checks in aerospace supply chains.

Typical use and users

Used by aerospace OEMs, tier-1 suppliers, procurement specialists, quality and receiving inspection teams, design engineers specifying seals and gaskets, and maintenance/repair organizations that source machined polyamide O-rings. The standard is applied when purchases require consistent dimensional quality, material conformity to AMS3617, and controlled packaging/traceability for flight or critical aerospace hardware.

Related standards

Primary related document: AMS3617 (Polyamide / Nylon — material specification) which defines the polymer type used for these machined O-rings. Other related SAE aerospace part and sealing standards (SAE AS series) and applicable procurement/inspection standards may be used together with AS9772A for full specification and acceptance control.

Keywords

AS9772A, SAE, O-ring, machined O-ring, AMS3617, polyamide, nylon, seals, gaskets, dimensional tolerances, visual quality, lot requirements, packaging, labeling, aerospace procurement.

FAQ

Q: What is this standard?

A: SAE AS9772A-2025 is an aerospace technical standard that specifies requirements for O-rings machined from AMS3617 polyamide material, focused on dimensional and visual quality, lot acceptance, and packaging/labeling for procurement use.

Q: What does it cover?

A: It covers dimensional tolerances, acceptable visual defects, lot and sampling requirements, and packaging/labeling criteria for machined O-rings made from AMS3617 polyamide, intended to ensure consistent supplier and incoming inspection practices.

Q: Who typically uses it?

A: Aerospace manufacturers, suppliers of seals and gaskets, procurement and quality assurance teams, design engineers specifying O-rings, and maintenance/repair organizations that require traceable, conforming machined polyamide O-rings.

Q: Is it current or superseded?

A: As published/reaffirmed in 2025, AS9772A is shown as active/reaffirmed (July 17, 2025). Users should confirm any later revisions or supersessions via SAE International before relying on the standard for new procurements.

Q: Is it part of a series?

A: AS9772A is part of SAE’s aerospace standards family and is intended to be used alongside material specifications such as AMS3617 and other SAE AS standards governing components, procurement, and inspection practices.

Q: What are the key keywords?

A: O-ring, AMS3617, polyamide, nylon, machined, seals, gaskets, dimensional tolerance, visual inspection, lot acceptance, packaging, SAE AS9772A.