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AS568-438 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS568-438: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 6.775 INCHES NOMINAL IN, center_hole_diameter: 6.185 INCHES MINIMUM AND 6.265 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-420-9624, 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
AS568-438
NSN: 5331-00-420-9624
FSC: 5331 — O-ring
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter6.775 INCHES NOMINAL IN
center_hole_diameter6.185 INCHES MINIMUM AND 6.265 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN5331-00-420-9624
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-438 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: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 6.775 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 6.185 INCHES MINIMUM AND 6.265 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
OUTSIDE DIAMETER6.775 INCHES NOMINAL IN
CENTER HOLE DIAMETER6.185 INCHES MINIMUM AND 6.265 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 9
0065266.70.60Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-438N219-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
ASTM-D2000Reference document
Same NSN cross-reference
Reference document — Secondary reference
N0674 2-438Reference document
Same NSN cross-reference
Reference document — Secondary reference
10003367Reference document
Same NSN cross-reference
Reference document — Informative reference only
2-438 N674-7Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS568-438?
AS568-438 is a O-RING.
What parts can replace AS568-438?
There are 9 known substitutes for AS568-438: 0065266.70.60, 2-438N219-7, ASTM-D2000 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-438?
AS568-438 is cataloged in the U.S. Government catalog under NSN 5331-00-420-9624. This indicates validated use in U.S. government and defense supply chains.
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