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Technical Data Sheet
369A1121 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, peripheral_diameter: 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN, center_hole_diameter: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, cross-sectional_height: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN, material_document_and_classification: QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-948-3227, 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
369A1121
NSN: 5330-00-948-3227
FSC: 5330
CAGE: 02731 — MCDONNELL DOUGLAS HELICOPTER CO INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
peripheral_diameter0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
center_hole_diameter0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
cross-sectional_height0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-948-3227
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 369A1121 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
MATERIAL: ALUMINUM ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PERIPHERAL DIAMETER: 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALALUMINUM ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PERIPHERAL DIAMETER0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
78935Interchangeable
interchangeable cross-reference
interchangeable
1602 3-8Interchangeable
interchangeable cross-reference
interchangeable
851 3-8Interchangeable
interchangeable cross-reference
interchangeable
4240PL1933239Interchangeable
interchangeable cross-reference
interchangeable
7000051828Interchangeable
interchangeable cross-reference
interchangeable
BW12TF1E9534Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 369A1121?
369A1121 is a RETAINER,PACKING.
What parts can replace 369A1121?
There are 6 known substitutes for 369A1121: 78935, 1602 3-8, 851 3-8 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 369A1121?
369A1121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-948-3227. This indicates validated use in U.S. government and defense supply chains.
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