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

MS16624-4087
Military Standard MS16624-4087 Steel Ring, Retaining - 20/Pack
Military Standard
SKU SGP133110-X20
Observed pack 20/Pack · sale increment 1
NSN 5325-00-514-0393
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 20 ea)
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MS16624-4093
Military Standard MS16624-4093 Steel Ring, Retaining
Military Standard
SKU SGP133111
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-804-2184
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4098
Military Standard MS16624-4098 Steel Ring, Retaining - 30/Pack
Military Standard
SKU SGP133112-X30
Observed pack 30/Pack · sale increment 1
NSN 5325-00-807-8151
- Country of Origin: United States
- Observed pack description: Pack - (Pack = 30 ea)
- Observed unit of measure: 30/Pack
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MS16624-4100
Military Standard MS16624-4100 Steel Ring, Retaining
Military Standard
SKU SGP133113
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-598-1785
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4125
Military Standard MS16624-4125 Steel Ring, Retaining
Military Standard
SKU SGP133114
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-282-5288
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-4143
Military Standard MS16624-4143 Steel Ring, Retaining
Military Standard
SKU SGP167021
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-5012
Military Standard MS16624-5012 Steel Ring, Retaining
Military Standard
SKU SGP133115
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-200-2637
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Each
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MS16624-5018
Military Standard MS16624-5018 Steel Ring, Retaining - 50/Pack
Military Standard
SKU SGP133118-X50
Observed pack 50/Pack · sale increment 1
NSN 5325-00-903-7567
- Country of Origin: United States
- Material: Cadmium Plated Steel
- Observed pack description: Pack - (Pack = 50 ea)
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MS16624-5023
Military Standard MS16624-5023 Steel Ring, Retaining
Military Standard
SKU SGP133121
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-470-5597
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-5025
Military Standard MS16624-5025 Steel Ring, Retaining
Military Standard
SKU SGP167066
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS16624-59
Military Standard MS16624-59 Steel Ring, Retaining
Military Standard
SKU SGP133123
Observed pack Pack Quantity 1 · sale increment 1
NSN 5325-00-806-1686
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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MS28773-04
Military Standard MS28773-04 Teflon (PTFE) Retainer, Packing - 50/Pack
Military Standard
SKU SGP136654-X50
Observed pack 50/Pack · sale increment 1
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Pack - (Pack = 50 ea)
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MS28773-05
Military Standard MS28773-05 Teflon (PTFE) Retainer, Packing - 50/Pack
Military Standard
SKU SGP136655-X50
Observed pack 50/Pack · sale increment 1
NSN 5330-00-487-4687
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Pack - (Pack = 50 ea)
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MS28773-06
Military Standard MS28773-06 Teflon (PTFE) Retainer, Packing
Military Standard
SKU SGP136656
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Each
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MS28773-08
Military Standard MS28773-08 Teflon (PTFE) Retainer, Packing - 50/Pack
Military Standard
SKU SGP136657-X50
Observed pack 50/Pack · sale increment 1
NSN 5330-00-550-6742
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Pack - (Pack = 50 ea)
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MS28773-10
Military Standard MS28773-10 Teflon (PTFE) Retainer, Packing - 25/Pack
Military Standard
SKU SGP136658-X25
Observed pack 25/Pack · sale increment 1
NSN 5330-00-550-6743
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Pack - (Pack = 25 ea)
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MS28773-12
Military Standard MS28773-12 Teflon (PTFE) Retainer, Packing
Military Standard
SKU SGP136659
Observed pack Pack Quantity 1 · sale increment 1
NSN 5330-00-809-2587
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Each
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MS28773-16
Military Standard MS28773-16 Teflon (PTFE) Retainer, Packing
Military Standard
SKU SGP136660
Observed pack Pack Quantity 1 · sale increment 1
NSN 5330-00-487-4676
- Country of Origin: United States
- Material: Teflon (PTFE)
- Observed pack description: Each
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NSA8671-12
AIRBUS NSA8671-12 PTFE Ring, Backup
AIRBUS
SKU SGP143159
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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NSA8671-16
AIRBUS NSA8671-16 PTFE Ring, Backup
AIRBUS
SKU SGP143160
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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NSA8671-8
AIRBUS NSA8671-8 PTFE Ring, Backup
AIRBUS
SKU SGP143162
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: United States
- Observed pack description: Each
- Observed unit of measure: Each
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NSA8674-12
AIRBUS NSA8674-12 PTFE Stop Ring
AIRBUS
SKU SGP143163
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: France
- Observed pack description: Each
- Observed unit of measure: Each
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NSA8674-16
AIRBUS NSA8674-16 PTFE Stop Ring
AIRBUS
SKU SGP143164
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: France
- Observed pack description: Each
- Observed unit of measure: Each
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NSA8674-4
AIRBUS NSA8674-4 PTFE Stop Ring
AIRBUS
SKU SGP143165
Observed pack Pack Quantity 1 · sale increment 1
- Country of Origin: France
- Observed pack description: Each
- Observed unit of measure: Each
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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

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