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5021-53 — 5021-53

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

5021-53: 5021-53.

The 5021-53 is a the manufacturer industrial component. Key specifications include overall_width: 4.875 INCHES NOMINAL IN, overall_length: 7.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-290-5951, 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
MRO→ MRO_GENERAL→ 5021-53
NSN: 5330-00-290-5951
NIINs: 002905951, 009120640, 010133028, 011016963, 012116012, 013666433
FSC: 5330 — Packing and Gasket Materials
CAGE: 03848 — ARMA DIV AMBAC INDUSTRIES INC
SPECIFICATIONS
overall_width4.875 INCHES NOMINAL IN
overall_length7.375 INCHES NOMINAL IN
NSN5330-00-290-5951
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5021-53 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
•
CROSS-SECTIONAL THICKNESS: 0.094 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-L-201 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.250 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
•
BOLT CIRCLE DIAMETER: 3.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.094 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-L-201 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
APERTURE DIAMETER3.250 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER3.625 INCHES NOMINAL IN
MATERIALLEAD OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
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 5021-53?
5021-53 is a 5021-53. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 5021-53?
5021-53 is cataloged in the U.S. Government catalog under NSN 5330-00-290-5951. 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.