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RU51089 — CAP-PLUG,PROTECTIVE,DUST AND MOI

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

RU51089: CAP-PLUG,PROTECTIVE,DUST AND MOI.

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: PLASTIC, length_under_shoulder: 0.740 INCHES NOMINAL IN, open_end_inside_diameter: 0.802 INCHES NOMINAL IN, closed_end_overall_diameter: 0.911 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-264-1203, 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
RU51089
NSN: 5340-00-264-1203
FSC: 5340 — Hardware, Commercial
CAGE: D3309 — MTU AERO ENGINES AG (DEU)
SPECIFICATIONS
materialPLASTIC
length_under_shoulder0.740 INCHES NOMINAL IN
open_end_inside_diameter0.802 INCHES NOMINAL IN
closed_end_overall_diameter0.911 INCHES NOMINAL IN
NSN5340-00-264-1203
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RU51089 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: 0.911 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.740 INCHES NOMINAL IN
•
OPEN END INSIDE DIAMETER: 0.802 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
CLOSED END OVERALL DIAMETER0.911 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.740 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER0.802 INCHES NOMINAL IN
MATERIALPLASTIC
SUBSTITUTES & CROSS-REFERENCES 4
MILC52078Reference document
Same NSN cross-reference
Reference document — Secondary reference
212Reference document
Same NSN cross-reference
Reference document — Secondary reference
SIZE11Reference document
Same NSN cross-reference
Reference document — Secondary reference
11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RU51089?
RU51089 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace RU51089?
There are 4 known substitutes for RU51089: MILC52078, 212, SIZE11 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RU51089?
RU51089 is cataloged in the U.S. Government catalog under NSN 5340-00-264-1203. This indicates validated use in U.S. government and defense supply chains.
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