PartsTable
Technical Data Sheet
NAS816-299 ✓ 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: 1.000 INCHES NOMINAL IN, open_end_inside_diameter: 3.180 INCHES NOMINAL IN, closed_end_overall_diameter: 2.990 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-884-8771, 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
NAS816-299
NSN: 5340-00-884-8771
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialPLASTIC
length_under_shoulder1.000 INCHES NOMINAL IN
open_end_inside_diameter3.180 INCHES NOMINAL IN
closed_end_overall_diameter2.990 INCHES NOMINAL IN
NSN5340-00-884-8771
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS816-299 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
LENGTH UNDER SHOULDER: 1.000 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER: 3.180 INCHES NOMINAL IN
CLOSED END OVERALL DIAMETER: 2.990 INCHES NOMINAL IN
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH UNDER SHOULDER1.000 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER3.180 INCHES NOMINAL IN
CLOSED END OVERALL DIAMETER2.990 INCHES NOMINAL IN
END ITEM IDENTIFICATIONENGINE,AIRCRAFT F-117,PW-100;HELICOPTER,CARRIER BASED ASW;HELICOPTER,SEARCH AND RESCUE;HELICOPTER,USCG;AIRCRAFT,B-2 BOMBER(ATB);HELO,ELECT COUNTERMEASURES;MISSILE,MINUTEMAN LGM-30;HELICOPTER,IROQUOIS UH-1;AIRCRAFT,HERCULES C-130
MATERIALPLASTIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
238Upgraded Successor
successor cross-reference
successor
55AUpgraded Successor
successor cross-reference
successor
269Upgraded Successor
successor cross-reference
successor
N5558VInterchangeable
interchangeable cross-reference
interchangeable
IC55AInterchangeable
interchangeable cross-reference
interchangeable
399-723Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS816-299?
NAS816-299 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace NAS816-299?
There are 17 known substitutes for NAS816-299: 238, 55A, 269 and 14 more. Substitute compatibility should be verified for your specific system.
Is NAS816-299 still available?
NAS816-299 is currently cancelled.
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