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Hardware
Back-up rings
Back-up rings for aviation maintenance and overhaul sourcing. Search by manufacturer part number or NSN. Listings are PartsPerk-owned observations for review — not live inventory or airworthiness approval.
145 owned part identities in this path
Identifier first
Back-up rings: browse owned identities on this path.
Back-up rings for aviation maintenance and overhaul sourcing. Search by manufacturer part number or NSN. Listings are PartsPerk-owned observations for review — not live inventory or airworthiness approval. Use the manufacturer part number or NSN from the work card before guessing a family. Path Hardware → Back-up rings is a catalog placement signal, not interchange, stock, or price. Open a listed identity for image, specs, and RFQ context — or search the exact PN from this leaf.
Why this leaf exists
Unique context for Back-up rings, not a thin copy of the parent.
This leaf keeps Back-up rings-specific guidance so crawlers and buyers are not served duplicated department prose. Confirm finish, dash, pack, and applicability on the part page. Request sourcing carries quantity and document needs; this page does not invent availability.
145 PartsPerk-owned parts in Back-up rings
Military Standard MS16624-4087 Steel Ring, Retaining - 20/Pack
Pack Quantity 20
Military Standard MS16624-4093 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-4098 Steel Ring, Retaining - 30/Pack
Pack Quantity 30
Military Standard MS16624-4100 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-4125 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-4143 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-5012 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-5018 Steel Ring, Retaining - 50/Pack
Pack Quantity 50
Military Standard MS16624-5023 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-5025 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS16624-59 Steel Ring, Retaining
Pack Quantity 1
Military Standard MS28773-04 Teflon (PTFE) Retainer, Packing - 50/Pack
Pack Quantity 50
Military Standard MS28773-05 Teflon (PTFE) Retainer, Packing - 50/Pack
Pack Quantity 50
Military Standard MS28773-06 Teflon (PTFE) Retainer, Packing
Pack Quantity 1
Military Standard MS28773-08 Teflon (PTFE) Retainer, Packing - 50/Pack
Pack Quantity 50
Military Standard MS28773-10 Teflon (PTFE) Retainer, Packing - 25/Pack
Pack Quantity 25
Military Standard MS28773-12 Teflon (PTFE) Retainer, Packing
Pack Quantity 1
Military Standard MS28773-16 Teflon (PTFE) Retainer, Packing
Pack Quantity 1
AIRBUS NSA8671-12 PTFE Ring, Backup
Pack Quantity 1
AIRBUS NSA8671-16 PTFE Ring, Backup
Pack Quantity 1
AIRBUS NSA8671-8 PTFE Ring, Backup
Pack Quantity 1
AIRBUS NSA8674-12 PTFE Stop Ring
Pack Quantity 1
AIRBUS NSA8674-16 PTFE Stop Ring
Pack Quantity 1
AIRBUS NSA8674-4 PTFE Stop Ring
Pack Quantity 1
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Frequently asked questions
How do I pick the correct part?
Start with the manufacturer part number from the illustrated parts catalog or maintenance manual. If an NSN is listed, search that next. Confirm finish, dash number, and engine or airframe applicability before opening an RFQ.
Are these listings in stock or certified?
No. Category pages show PartsPerk-owned observations for sourcing review. Stock, price, trace, and airworthiness stay off the page until a separate publication review.
Can fleet and shop orders be reviewed together?
Yes. Submit quantity, required documents, and need-by date through the sourcing desk. Volume review is human — these pages do not auto-discount.
PartsPerk catalog pages show PartsPerk-owned observations only. They are not live stock, not certification, and not OEM affiliation. Exact PN/NSN identity is for sourcing review; publication and sellability require separate approval.
