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Technical Data Sheet
PartsTable / COMPONENT / 917966-4
917966-4 ✓ 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: 0.875 INCHES NOMINAL IN, open_end_inside_diameter: 1.537 INCHES NOMINAL IN, closed_end_overall_diameter: 1.447 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7213, 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
917966-4
NSN: 5340-00-290-7213
FSC: 5340
CAGE: 89926 — NEW HOLLAND CONSTRUCTION (USA)
SPECIFICATIONS
materialPLASTIC
length_under_shoulder0.875 INCHES NOMINAL IN
open_end_inside_diameter1.537 INCHES NOMINAL IN
closed_end_overall_diameter1.447 INCHES NOMINAL IN
NSN5340-00-290-7213
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 917966-4 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: 1.447 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
LENGTH UNDER SHOULDER: 0.875 INCHES NOMINAL IN
•
OPEN END INSIDE DIAMETER: 1.537 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CLOSED END OVERALL DIAMETER1.447 INCHES NOMINAL IN
MATERIALPLASTIC
LENGTH UNDER SHOULDER0.875 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER1.537 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
MILC52078Upgraded Successor
successor cross-reference
successor
RU51089Upgraded Successor
successor cross-reference
successor
28901-17Upgraded Successor
successor cross-reference
successor
21Upgraded Successor
successor cross-reference
successor
MIL-C-5501Upgraded Successor
successor cross-reference
successor
57AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 917966-4?
917966-4 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace 917966-4?
There are 25 known substitutes for 917966-4: MILC52078, RU51089, 28901-17 and 22 more. Substitute compatibility should be verified for your specific system.
Is 917966-4 still available?
917966-4 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