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Technical Data Sheet
PartsTable / O-RING / 7550478-263370201-BCP
7550478-263370201-BCP ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include end_item_identification: SIGHT GLASS ASSEMBLY, 0.250 IPS., 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 (FLIS) under NSN 5331-01-548-4364, 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
7550478-263370201-BCP
NSN: 5331-01-548-4364
FSC: 5331 — O-RING
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
end_item_identificationSIGHT GLASS ASSEMBLY, 0.250 IPS.
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
NSN5331-01-548-4364
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7550478-263370201-BCP 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: ZZZW
•
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZW
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
END ITEM IDENTIFICATIONSIGHT GLASS ASSEMBLY, 0.250 IPS.
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2-330 N304-75Interchangeable
interchangeable cross-reference
interchangeable
54A125-330Interchangeable
interchangeable cross-reference
interchangeable
AS568-330MIL-P-25732Interchangeable
interchangeable cross-reference
interchangeable
5331PL1322544Interchangeable
interchangeable cross-reference
interchangeable
51561A222Interchangeable
interchangeable cross-reference
interchangeable
19-000-0576Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7550478-263370201-BCP?
7550478-263370201-BCP is a O-RING.
What parts can replace 7550478-263370201-BCP?
There are 13 known substitutes for 7550478-263370201-BCP: 2-330 N304-75, 54A125-330, AS568-330MIL-P-25732 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7550478-263370201-BCP?
7550478-263370201-BCP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-548-4364. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026