PartsTable
Technical Data Sheet

2173705/1 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2173705/1: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 21.8 MILLIMETERS NOMINAL MM, cross-sectional_height: 3.5 MILLIMETERS NOMINAL MM, end_item_identification: CRANKCASE FOR A 256 MARINE SOLAS. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-532-9573, 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
2173705/1
NSN: 5331-01-532-9573
FSC: 5331 — O-ring
CAGE: 0BAT5 — U.S. DEFENSE SERVICES, INC. DBA USDS (USA)
SPECIFICATIONS
center_hole_diameter21.8 MILLIMETERS NOMINAL MM
cross-sectional_height3.5 MILLIMETERS NOMINAL MM
end_item_identificationCRANKCASE FOR A 256 MARINE SOLAS
NSN5331-01-532-9573
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2173705/1 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 HEIGHT: 3.5 MILLIMETERS NOMINAL MM
•
CENTER HOLE DIAMETER: 21.8 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT3.5 MILLIMETERS NOMINAL MM
CENTER HOLE DIAMETER21.8 MILLIMETERS NOMINAL MM
END ITEM IDENTIFICATIONCRANKCASE FOR A 256 MARINE SOLAS
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2173705/1?
2173705/1 is a O-RING.
What is the NSN for 2173705/1?
2173705/1 is cataloged in the U.S. Government catalog under NSN 5331-01-532-9573. This indicates validated use in U.S. government and defense supply chains.
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