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845-6556551 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

845-6556551: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: FIBER OVERALL, hole_diameter: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 5.000 INCHES NOMINAL IN, style_designator: CIRCULAR, bolt_circle_diameter: 4.000 INCHES NOMINAL IN, cross-sectional_thickness: 0.031 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-388-8693, 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
845-6556551
NSN: 5330-01-388-8693
NIINs: 013888693, 014142925
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialFIBER OVERALL
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter5.000 INCHES NOMINAL IN
style_designatorCIRCULAR
bolt_hole_quantity6
bolt_circle_diameter4.000 INCHES NOMINAL IN
cross-sectional_thickness0.031 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationSY4,CAGEC-52374 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-388-8693
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 845-6556551 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
SUBSTITUTES & CROSS-REFERENCES 1
845-6603141-103Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 845-6556551?
845-6556551 is a GASKET.
What parts can replace 845-6556551?
There is 1 known substitute for 845-6556551: 845-6603141-103. Substitute compatibility should be verified for your specific system.
What is the NSN for 845-6556551?
845-6556551 is cataloged in the U.S. Government catalog under NSN 5330-01-388-8693. 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.