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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.
75 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.
75 PartsPerk-owned parts in Back-up rings
Boeing BACR12BM116 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM117 Ring, Back-Up - 25/Pack
Pack Quantity 25
Boeing BACR12BM119 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM120 Ring, Back-Up - 500/Pack
Pack Quantity 500
Boeing BACR12BM121 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM122 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM123 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM128 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM130 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM131 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM132 Ring, Back-Up - 500/Pack
Pack Quantity 500
Boeing BACR12BM135 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM136 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM138 Ring, Back-Up - 500/Pack
Pack Quantity 500
Boeing BACR12BM211 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM213 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM214 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM215 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM216 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM217 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM218 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM219 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM220 Ring, Back-Up - 5/Pack
Pack Quantity 5
Boeing BACR12BM221 Ring, Back-Up - 5/Pack
Pack Quantity 5
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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.
