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9-2-2521 — CABLE ASSEMBLY,SPECIAL PURPOSE,E

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9-2-2521: CABLE ASSEMBLY,SPECIAL PURPOSE,E.

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN, center_hole_diameter: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-167-5166, 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
9-2-2521
NSN: 5331-00-167-5166
NIINs: 001675166, 016460298
FSC: 5331 — O-ring
CAGE: 05779 — PARKER-HANNIFIN CORPORATION DBA HYDRAULIC FILTER DIVISION DIV HYDRAULIC & FUEL FILTER DIVISION (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
center_hole_diameter0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
NSN5331-00-167-5166
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9-2-2521 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: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.547 INCHES MINIMUM AND 0.569 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONSTREAM (STD. TENSIONED REPLENISHMENT AT SEA METHOD); ELEVATORS, AIRCRAFT; AIRCRAFT, AIRLIFTER C-17A; BOILERS, 1200 PSI; AIRCRAFT, SOF ( AC-130H, MC-130H, EC-130E, HC-130); SUPPORT EQUIPMENT, B-1 AIRCRAFT; L.P. COMPRESSORS; STERN GATES; SYSTEMS, 02N2; SAS (STARTING AIR SYS), FFG-7; 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS) BAP (BRIDGE ADAPTER PALLET). A
MATERIALRUBBER FLUOROCARBON CLASS FPM
SUBSTITUTES & CROSS-REFERENCES 7
M83248/1-905Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
924284C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
3-905 V747-75Reference document
Same NSN cross-reference
Reference document — Secondary reference
905-19357Reference document
Same NSN cross-reference
Reference document — Secondary reference
5331001675166Reference document
Same NSN cross-reference
Reference document — Secondary reference
5331PL1679283Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9-2-2521?
9-2-2521 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E.
What parts can replace 9-2-2521?
There are 7 known substitutes for 9-2-2521: M83248/1-905, 924284C1, 3-905 V747-75 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9-2-2521?
9-2-2521 is cataloged in the U.S. Government catalog under NSN 5331-00-167-5166. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.