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Technical Data Sheet
PartsTable / O-RING / 7550478-264277305-38

7550478-264277305-38 — Technical Data Sheet

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— · 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 O-RING is a the manufacturer industrial component. Key specifications include material: PLASTIC FLUOROCARBON, center_hole_diameter: 0.984 INCHES NOMINAL IN, cross-sectional_height: 0.139 INCHES NOMINAL IN, end_item_identification: VALVE,BALL,ANGLE, 2IN. IN, departure_from_cited_document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D, criticality_code_justification: ZZZW.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System under NSN 5331-01-550-3391, 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
7550478-264277305-38
NSN: 5331-01-550-3391
FSC: 5331 — O-RING
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC FLUOROCARBON
center_hole_diameter0.984 INCHES NOMINAL IN
cross-sectional_height0.139 INCHES NOMINAL IN
end_item_identificationVALVE,BALL,ANGLE, 2IN. IN
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
NSN5331-01-550-3391
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7550478-264277305-38 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: PLASTIC FLUOROCARBON
•
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
•
CROSS-SECTIONAL HEIGHT: 0.139 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
CENTER HOLE DIAMETER: 0.984 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIALPLASTIC FLUOROCARBON
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
END ITEM IDENTIFICATIONVALVE,BALL,ANGLE, 2IN. IN
CRITICALITY CODE JUSTIFICATIONZZZW
CENTER HOLE DIAMETER0.984 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
P-LFCV-0 FIND SInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
513DG-214InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
R-8-29-52InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M83248-2-214CPInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
M83248-2-214InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
845-4687579 ITEM 38InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7550478-264277305-38?
7550478-264277305-38 is a O-RING.
What parts can replace 7550478-264277305-38?
There are 15 known substitutes for 7550478-264277305-38: P-LFCV-0 FIND S, 513DG-214, R-8-29-52 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7550478-264277305-38?
7550478-264277305-38 is cataloged in the Federal Logistics Information System under NSN 5331-01-550-3391. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: September 2026