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Technical Data Sheet
PartsTable / COMPONENT / 78-8005-1420-6
78-8005-1420-6 ✓ 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 POLYAMIDE NYLON, design_type: FRICTION, overall_diameter: 0.531 INCHES NOMINAL IN, opening_inside_diameter_for_which_designed: 0.375 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-852-6778, 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
78-8005-1420-6
NSN: 5340-00-852-6778
FSC: 5340
CAGE: 54828 — SYSTEC INC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
design_typeFRICTION
overall_diameter0.531 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed0.375 INCHES NOMINAL IN
NSN5340-00-852-6778
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 78-8005-1420-6 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
•
MATERIAL: PLASTIC POLYAMIDE NYLON
•
OVERALL DIAMETER: 0.531 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 0.375 INCHES NOMINAL IN
•
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYAMIDE NYLON
OVERALL DIAMETER0.531 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED0.375 INCHES NOMINAL IN
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
P37-5Upgraded Successor
successor cross-reference
successor
PIDA-E75-AISInterchangeable
interchangeable cross-reference
interchangeable
375-1Interchangeable
interchangeable cross-reference
interchangeable
300-100Interchangeable
interchangeable cross-reference
interchangeable
189731525Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 78-8005-1420-6?
78-8005-1420-6 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 78-8005-1420-6?
There are 5 known substitutes for 78-8005-1420-6: P37-5, PIDA-E75-AIS, 375-1 and 2 more. Substitute compatibility should be verified for your specific system.
Is 78-8005-1420-6 still available?
78-8005-1420-6 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026