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25K-40408 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

25K-40408: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 4.474 INCHES MINIMUM AND 4.550 INCHES MAXIMUM IN, center_hole_diameter: 4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-054-6880, 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
25K-40408
NSN: 5331-00-054-6880
NIINs: 000546880, 007296632
FSC: 5331 — O-ring
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter4.474 INCHES MINIMUM AND 4.550 INCHES MAXIMUM IN
center_hole_diameter4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-054-6880
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25K-40408 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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 9
2968-03ALT2PCQ3Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN6230B22Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
PS1-30-5-B22Reference document
Same NSN cross-reference
Reference document — Secondary reference
547510PCAN6230-22Reference document
Same NSN cross-reference
Reference document — Secondary reference
4267-50REVAPC14Reference document
Same NSN cross-reference
Reference document — Secondary reference
2968-40ALT1PCQ3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 25K-40408?
25K-40408 is a O-RING.
What parts can replace 25K-40408?
There are 9 known substitutes for 25K-40408: 2968-03ALT2PCQ3, AN6230B22, PS1-30-5-B22 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25K-40408?
25K-40408 is cataloged in the U.S. Government catalog under NSN 5331-00-054-6880. This indicates validated use in U.S. government and defense supply chains.
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