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25498 ✓ 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

RETAINER,HELICAL COMPRESSION SPR. Key specifications include part_name_assigned_by_controlling_agency: ANALYZER BLOOD GAS I-STAT, universal_medical_device_nomenclature_system_code: 18508. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-861-2445, 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
25498
NSN: 5340-00-861-2445
FSC: 5340
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyANALYZER BLOOD GAS I-STAT
universal_medical_device_nomenclature_system_code18508
NSN5340-00-861-2445
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25498 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: STEEL CORROSION RESISTING
•
BODY INSIDE DIAMETER: 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
•
FSC APPLICATION DATA: DRIVE,CONSTANT SPEED,HYDRAULIC 1650009996786 694256B
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
BODY OUTSIDE DIAMETER: 0.463 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING
BODY INSIDE DIAMETER0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
FSC APPLICATION DATADRIVE,CONSTANT SPEED,HYDRAULIC 1650009996786 694256B
OVERALL HEIGHT1.208 INCHES MINIMUM AND 1.228 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
BODY OUTSIDE DIAMETER0.463 INCHES MINIMUM AND 0.466 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4592655 PIECE 19Interchangeable
interchangeable cross-reference
interchangeable
5550536-1Interchangeable
interchangeable cross-reference
interchangeable
25498Interchangeable
interchangeable cross-reference
interchangeable
6630NCM116485Interchangeable
interchangeable cross-reference
interchangeable
04P75-03Interchangeable
interchangeable cross-reference
interchangeable
I-STATInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25498?
25498 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 25498?
There are 6 known substitutes for 25498: 4592655 PIECE 19, 5550536-1, 25498 and 3 more. Substitute compatibility should be verified for your specific system.
Is 25498 still available?
25498 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026