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Technical Data Sheet
PartsTable / COMPONENT / NAS834-322
NAS834-322 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: PLASTIC, length_under_shoulder: 0.750 INCHES NOMINAL IN, open_end_inside_diameter: 3.377 INCHES NOMINAL IN, closed_end_overall_diameter: 3.325 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7228, 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
NAS834-322
NSN: 5340-00-290-7228
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC
length_under_shoulder0.750 INCHES NOMINAL IN
open_end_inside_diameter3.377 INCHES NOMINAL IN
closed_end_overall_diameter3.325 INCHES NOMINAL IN
NSN5340-00-290-7228
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS834-322 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
•
CLOSED END OVERALL DIAMETER: 3.325 INCHES NOMINAL IN
•
OPEN END INSIDE DIAMETER: 3.377 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.750 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS (FLIS)
CLOSED END OVERALL DIAMETER3.325 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER3.377 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.750 INCHES NOMINAL IN
MATERIALPLASTIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
500Upgraded Successor
successor cross-reference
successor
501Upgraded Successor
successor cross-reference
successor
MILC52078Upgraded Successor
successor cross-reference
successor
22SUpgraded Successor
successor cross-reference
successor
M5501/7-F38Upgraded Successor
successor cross-reference
successor
917966Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS834-322?
NAS834-322 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace NAS834-322?
There are 25 known substitutes for NAS834-322: 500, 501, MILC52078 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS834-322?
NAS834-322 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7228. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026