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Technical Data Sheet
PartsTable / O-RING / 3-908 N0552
3-908 N0552 ✓ 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 special_features: TUBE OUTSIDE DIAMETER 0.50 IN.,WIDTH 0.09 IN.,N0552 IS THE STANDARD COMPOUND 90 DUROMETER NITRILE NBR IN, center_hole_diameter: 0.640 INCHES NOMINAL IN, end_item_identification: NSC-420 (WMSL-750). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-541-1314, 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
3-908 N0552
NSN: 5331-01-541-1314
FSC: 5331 — O-RING
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
special_featuresTUBE OUTSIDE DIAMETER 0.50 IN.,WIDTH 0.09 IN.,N0552 IS THE STANDARD COMPOUND 90 DUROMETER NITRILE NBR IN
center_hole_diameter0.640 INCHES NOMINAL IN
end_item_identificationNSC-420 (WMSL-750)
NSN5331-01-541-1314
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3-908 N0552 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
•
CENTER HOLE DIAMETER: 0.640 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESTUBE OUTSIDE DIAMETER 0.50 IN.,WIDTH 0.09 IN.,N0552 IS THE STANDARD COMPOUND 90 DUROMETER NITRILE NBR IN
CENTER HOLE DIAMETER0.640 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
809000-412Interchangeable
interchangeable cross-reference
interchangeable
666163-343Interchangeable
interchangeable cross-reference
interchangeable
3908Interchangeable
interchangeable cross-reference
interchangeable
72-6970-963Interchangeable
interchangeable cross-reference
interchangeable
5947510Interchangeable
interchangeable cross-reference
interchangeable
946057-508Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-908 N0552?
3-908 N0552 is a O-RING.
What parts can replace 3-908 N0552?
There are 19 known substitutes for 3-908 N0552: 809000-412, 666163-343, 3908 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-908 N0552?
3-908 N0552 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-541-1314. 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.
PartsTable Design LLC · partstable.com
Last verified: July 2026