PartsTable
Technical Data Sheet
NAS820-8A ✓ 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

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, design_type: FRICTION, overall_diameter: 0.680 INCHES NOMINAL IN, features_provided: SHOULDER, nondefinitive_spec/std_data: NAS820-8A PART A, opening_inside_diameter_for_which_designed: 0.485 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 5340-00-078-0216, 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
NAS820-8A
NSN: 5340-00-078-0216
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
overall_diameter0.680 INCHES NOMINAL IN
features_providedSHOULDER
nondefinitive_spec/std_dataNAS820-8A PART A
opening_inside_diameter_for_which_designed0.485 INCHES NOMINAL IN
NSN5340-00-078-0216
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS820-8A 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
DESIGN TYPE: FRICTION
OVERALL DIAMETER: 0.680 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA: NAS820-8A PART A
MATERIAL: PLASTIC
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 0.485 INCHES NOMINAL IN
FEATURES PROVIDED: SHOULDER
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPEFRICTION
OVERALL DIAMETER0.680 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATANAS820-8A PART A
MATERIALPLASTIC
OPENING INSIDE DIAMETER FOR WHICH DESIGNED0.485 INCHES NOMINAL IN
FEATURES PROVIDEDSHOULDER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
NAS820-12AInterchangeable
interchangeable cross-reference
interchangeable
EP12Interchangeable
interchangeable cross-reference
interchangeable
NAS820Interchangeable
interchangeable cross-reference
interchangeable
NAS820-10AInterchangeable
interchangeable cross-reference
interchangeable
NAS820-14AInterchangeable
interchangeable cross-reference
interchangeable
NAS820-24AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS820-8A?
NAS820-8A is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace NAS820-8A?
There are 14 known substitutes for NAS820-8A: NAS820-12A, EP12, NAS820 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS820-8A?
NAS820-8A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-078-0216. This indicates validated use in U.S. government and defense supply chains.
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