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PartsTable / COMPONENT / 172557
172557 ✓ 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 PLUG,EXPANSION is a the manufacturer industrial component. Key specifications include end_item_identification: AIRCRAFT KDC-10, LIGHT INSTL-UTILITY, MCDONNELL DOUGLAS CORP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-276-5849, 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
172557
NSN: 5340-00-276-5849
FSC: 5340
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_item_identificationAIRCRAFT KDC-10, LIGHT INSTL-UTILITY, MCDONNELL DOUGLAS CORP
NSN5340-00-276-5849
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 172557 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
•
SURFACE TREATMENT: CADMIUM
•
OUTSIDE DIAMETER: 1.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CONCAVE
•
RADIUS: 1.625 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM
OUTSIDE DIAMETER1.188 INCHES NOMINAL IN
STYLE DESIGNATORCONCAVE
RADIUS1.625 INCHES NOMINAL IN
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
96687Upgraded Successor
successor cross-reference
successor
30556Upgraded Successor
successor cross-reference
successor
30556AUpgraded Successor
successor cross-reference
successor
71237Upgraded Successor
successor cross-reference
successor
9064Upgraded Successor
successor cross-reference
successor
30112Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 172557?
172557 is a PLUG,EXPANSION.
What parts can replace 172557?
There are 24 known substitutes for 172557: 96687, 30556, 30556A and 21 more. Substitute compatibility should be verified for your specific system.
Is 172557 still available?
172557 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