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12266798-5 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12266798-5: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q, temp_rating: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.222 INCHES MINIMUM AND 3.282 INCHES MAXIMUM IN, center_hole_diameter: 3.122 INCHES NOMINAL IN, cross-sectional_height: 0.070 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-078-8072, 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
12266798-5
NSN: 5331-01-078-8072
FSC: 5331 — O-ring
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
temp_rating-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter3.222 INCHES MINIMUM AND 3.282 INCHES MAXIMUM IN
center_hole_diameter3.122 INCHES NOMINAL IN
cross-sectional_height0.070 INCHES NOMINAL IN
end_item_identificationM901
material_document_and_classificationAMS3304 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-078-8072
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12266798-5 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: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.070 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.222 INCHES MINIMUM AND 3.282 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS3304 ASSN STD SINGLE MATERIAL RESPONSE
•
COLOR: NATURAL
•
CENTER HOLE DIAMETER: 3.122 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.070 INCHES NOMINAL IN
OUTSIDE DIAMETER3.222 INCHES MINIMUM AND 3.282 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS3304 ASSN STD SINGLE MATERIAL RESPONSE
COLORNATURAL
CENTER HOLE DIAMETER3.122 INCHES NOMINAL IN
END ITEM IDENTIFICATIONM901
MATERIALRUBBER SILICONE CLASS Q
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 2
1266798-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
5-374S604-70Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12266798-5?
12266798-5 is a O-RING.
What parts can replace 12266798-5?
There are 2 known substitutes for 12266798-5: 1266798-5, 5-374S604-70. Substitute compatibility should be verified for your specific system.
What is the NSN for 12266798-5?
12266798-5 is cataloged in the U.S. Government catalog under NSN 5331-01-078-8072. This indicates validated use in U.S. government and defense supply chains.
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