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.

Search PN / NSN Request sourcing

145 owned part identities in this path

Parts in this category

145 PartsPerk-owned part identities in this path.

Grid Table

All manufacturers AIRBUS Boeing Military Standard

BACR12BJ216A
Boeing BACR12BJ216A FAA-PMA Rod Seal Ring, Cap
Boeing
SKU SGP100764
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
Open compare View part RFQ
BACR12BM006
Boeing BACR12BM006 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100765-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM008
Boeing BACR12BM008 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100767-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM009
Boeing BACR12BM009 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100768-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM010
Boeing BACR12BM010 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100769-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM011
Boeing BACR12BM011 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100770-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM012
Boeing BACR12BM012 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100771-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM013
Boeing BACR12BM013 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100772-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM014
Boeing BACR12BM014 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100773-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM015
Boeing BACR12BM015 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100774-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM016
Boeing BACR12BM016 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100775-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM017
Boeing BACR12BM017 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100776-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM018
Boeing BACR12BM018 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100777-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM019
Boeing BACR12BM019 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100778-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM020
Boeing BACR12BM020 Ring, Back-Up - 500/Pack
Boeing
SKU SGP100779-X500
Observed pack 500/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 500 ea)
Open compare View part RFQ
BACR12BM022
Boeing BACR12BM022 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100780-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM024
Boeing BACR12BM024 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100781-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM026
Boeing BACR12BM026 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100782-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM027
Boeing BACR12BM027 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100783-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM110
Boeing BACR12BM110 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100784-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM111
Boeing BACR12BM111 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100785-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM113
Boeing BACR12BM113 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100786-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM114
Boeing BACR12BM114 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100787-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ
BACR12BM115
Boeing BACR12BM115 Ring, Back-Up - 5/Pack
Boeing
SKU SGP100788-X5
Observed pack 5/Pack · sale increment 1
- Country of Origin: United States
- Material: TFE Plastic
- Observed pack description: Pack - (Pack = 5 ea)
Open compare View part RFQ

Related hardware

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.

Back-up rings

Parts in this category

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