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CM2690C21 — RETAINER SLEEVE,SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CM2690C21: RETAINER SLEEVE,SEAL.

The RETAINER SLEEVE,SEAL is a the manufacturer industrial component. Key specifications include model_number: CM2690C21, end_item_identification: MAIN LANDING GEAR ASSY MODEL 500 SERIES, part_name_assigned_by_controlling_agency: RETAINER. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-674-4642, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
CM2690C21
NSN: 5330-01-674-4642
FSC: 5330 — Packing and Gasket Materials
CAGE: 7EK50 — TEXTRON AVIATION INC (USA)
SPECIFICATIONS
model_numberCM2690C21
end_item_identificationMAIN LANDING GEAR ASSY MODEL 500 SERIES
part_name_assigned_by_controlling_agencyRETAINER
NSN5330-01-674-4642
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CM2690C21 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MODEL NUMBER: CM2690C21
TECHNICAL CHARACTERISTICS
MODEL NUMBERCM2690C21
PART NAME ASSIGNED BY CONTROLLING AGENCYRETAINER
END ITEM IDENTIFICATIONMAIN LANDING GEAR ASSY MODEL 500 SERIES
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CM2690C21?
CM2690C21 is a RETAINER SLEEVE,SEAL.
What is the NSN for CM2690C21?
CM2690C21 is cataloged in the U.S. Government catalog under NSN 5330-01-674-4642. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.