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525318 ✓ 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

NOZZLE,TURBINE,AIRCRAFT GAS TURB. Key specifications include material: STEEL CORROSION RESISTING OVERALL, special_features: USED ON CHEVROLET LIGHT TRUCK; P-SERIES VAN; 6 CYL., style_designator: CLOSED COOLING SYSTEM TYPE W/ LOOSE VACUUM VALVE, maximum_working_pressure: 7.000 POUNDS PER SQUARE INCH (PSI) LBS, system_for_which_designed: PRESSURIZED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-7387, 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
525318
NSN: 5330-00-291-7387
FSC: 5330
CAGE: 63728 — SEALCRAFT CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
special_featuresUSED ON CHEVROLET LIGHT TRUCK; P-SERIES VAN; 6 CYL.
style_designatorCLOSED COOLING SYSTEM TYPE W/ LOOSE VACUUM VALVE
maximum_working_pressure7.000 POUNDS PER SQUARE INCH (PSI) LBS
system_for_which_designedPRESSURIZED
NSN5330-00-291-7387
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 525318 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
•
CROSS-SECTIONAL SHAPE STYLE: FLANGE
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
•
FLANGED BODY OUTSIDE DIAMETER: 2.410 INCHES MINIMUM AND 2.430 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 2.170 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 2.730 INCHES MINIMUM AND 2.770 INCHES MAXIMUM IN
•
CROSS-SECTIONAL THICKNESS: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEFLANGE
MATERIALRUBBER SYNTHETIC OVERALL
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
FLANGED BODY OUTSIDE DIAMETER2.410 INCHES MINIMUM AND 2.430 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.170 INCHES NOMINAL IN
PERIPHERAL DIAMETER2.730 INCHES MINIMUM AND 2.770 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
525318Interchangeable
interchangeable cross-reference
interchangeable
00700525318Interchangeable
interchangeable cross-reference
interchangeable
31327Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 525318?
525318 is a NOZZLE,TURBINE,AIRCRAFT GAS TURB.
What parts can replace 525318?
There are 3 known substitutes for 525318: 525318, 00700525318, 31327. Substitute compatibility should be verified for your specific system.
What is the NSN for 525318?
525318 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-7387. 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: July 2026