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H552-0602-45 — COVER,PROTECTIVE,DUST AND MOISTU

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H552-0602-45: COVER,PROTECTIVE,DUST AND MOISTU.

COVER,PROTECTIVE,DUST AND MOISTU. Key specifications include material: ALUMINUM ALLOY 6061, length_under_shoulder: 16.250 INCHES NOMINAL IN, end_item_identification: VALVE ASSEMBLY VENT, material_document_and_classification: QQ-A-250/11, ALLOY 6061-T651 FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-499-2456, 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
H552-0602-45
NSN: 5340-01-499-2456
FSC: 5340 — Hardware, Commercial
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
length_under_shoulder16.250 INCHES NOMINAL IN
end_item_identificationVALVE ASSEMBLY VENT
material_document_and_classificationQQ-A-250/11, ALLOY 6061-T651 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-499-2456
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H552-0602-45 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
•
LENGTH UNDER SHOULDER: 16.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11, ALLOY 6061-T651 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: ALUMINUM ALLOY 6061
TECHNICAL CHARACTERISTICS
LENGTH UNDER SHOULDER16.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11, ALLOY 6061-T651 FED SPEC SINGLE MATERIAL RESPONSE
SPECIAL FEATURESTHIS ITEM (INCLUDES QUANTITY OF TWO) IS CALLED "IN-PORT COVER" BY VENDOR AND IS TO BE FITTED TO INSERT CONTOUR IN THE SHOP AND MAY BE REMOVED AND INSTALLED AFTER ASSEMBLIES HAVE BEEN WELDED IN THE SHIP;THIS ITEM MEASURES 15.000 INCHES BETWEEN END-HOLE CENTERS ALONG THE LENGTH IN
END ITEM IDENTIFICATIONVALVE ASSEMBLY VENT
MATERIALALUMINUM ALLOY 6061
SUBSTITUTES & CROSS-REFERENCES 1
7066807Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H552-0602-45?
H552-0602-45 is a COVER,PROTECTIVE,DUST AND MOISTU.
What parts can replace H552-0602-45?
There is 1 known substitute for H552-0602-45: 7066807. Substitute compatibility should be verified for your specific system.
What is the NSN for H552-0602-45?
H552-0602-45 is cataloged in the U.S. Government catalog under NSN 5340-01-499-2456. 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.