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9559K26 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9559K26: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE, temp_rating: 500.0 FAHRENHEIT DEGF, center_hole_diameter: 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN, material_document_and_classification: AMS 3668 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-374-2325, 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
9559K26
NSN: 5331-01-374-2325
FSC: 5331 — O-ring
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE
temp_rating500.0 FAHRENHEIT DEGF
center_hole_diameter0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
material_document_and_classificationAMS 3668 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-374-2325
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9559K26 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
•
TEMP RATING: 500.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3668 ASSN STD SINGLE MATERIAL RESPONSE
•
CENTER HOLE DIAMETER: 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE
TECHNICAL CHARACTERISTICS
TEMP RATING500.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3668 ASSN STD SINGLE MATERIAL RESPONSE
CENTER HOLE DIAMETER0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE
SUBSTITUTES & CROSS-REFERENCES 2
SAE-AS9955Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS9955-113Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 9559K26?
9559K26 is a O-RING.
What parts can replace 9559K26?
There are 2 known substitutes for 9559K26: SAE-AS9955, MS9955-113. Substitute compatibility should be verified for your specific system.
What is the NSN for 9559K26?
9559K26 is cataloged in the U.S. Government catalog under NSN 5331-01-374-2325. This indicates validated use in U.S. government and defense supply chains.
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