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519540 — 519540

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

519540: 519540.

The 519540 is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, construction: LAMINATED, outside_diameter: 0.380 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-826-7170, 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
519540
NSN: 5330-00-826-7170
NIINs: 008267170, 008565002
FSC: 5330 — Packing and Gasket Materials
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
constructionLAMINATED
outside_diameter0.380 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.255 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN
features_providedSEPARABLE
surface_treatmentPASSIVATE
lamination_quantity16
fsc_application_dataENGINE,AIRCRAFT,TURBO-PROP
NSN5330-00-826-7170
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 519540 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
•
FSC APPLICATION DATA: ENGINE,AIRCRAFT,TURBO-PROP
•
TEMP RATING: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: VERTICAL
•
HOUSING BORE DIAMETER: 1.122 INCHES MINIMUM AND 1.124 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 229 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.438 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAENGINE,AIRCRAFT,TURBO-PROP
TEMP RATING-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
SEAL WIDTH0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
SEALING ELEMENT STYLEVERTICAL
HOUSING BORE DIAMETER1.122 INCHES MINIMUM AND 1.124 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED229 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.438 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 519540?
519540 is a 519540.
What is the NSN for 519540?
519540 is cataloged in the U.S. Government catalog under NSN 5330-00-826-7170. This indicates validated use in U.S. government and defense supply chains.
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