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PartsTable / COMPONENT / 50MS592
50MS592 ✓ 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

The BUMPER is a the manufacturer industrial component. Key specifications include color: BLACK, material: RUBBER SYNTHETIC, hole_diameter: 0.219 INCHES NOMINAL IN, overall_height: 0.625 INCHES NOMINAL IN, style_designator: DONUT TOP COUNTERBORED, first_counterbore_depth: 0.438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-664-9978, 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
50MS592
NSN: 5340-00-664-9978
FSC: 5340
CAGE: 1LQK8 — KEYSIGHT TECHNOLOGIES, INC. (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER SYNTHETIC
hole_diameter0.219 INCHES NOMINAL IN
overall_height0.625 INCHES NOMINAL IN
style_designatorDONUT TOP COUNTERBORED
first_counterbore_depth0.438 INCHES NOMINAL IN
material_hardness_rating65.0 DUROMETER MINIMUM AND 75.0 DUROMETER MAXIMUM
first_counterbore_diameter0.438 INCHES NOMINAL IN
outside/top_flange_diameter0.938 INCHES NOMINAL IN
NSN5340-00-664-9978
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 50MS592 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
•
HOLE DIAMETER: 0.219 INCHES NOMINAL IN
•
FIRST COUNTERBORE DIAMETER: 0.438 INCHES NOMINAL IN
•
OUTSIDE/TOP FLANGE DIAMETER: 0.938 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DONUT TOP COUNTERBORED
•
FIRST COUNTERBORE DEPTH: 0.438 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
MATERIAL HARDNESS RATING: 65.0 DUROMETER MINIMUM AND 75.0 DUROMETER MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.219 INCHES NOMINAL IN
FIRST COUNTERBORE DIAMETER0.438 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.938 INCHES NOMINAL IN
STYLE DESIGNATORDONUT TOP COUNTERBORED
FIRST COUNTERBORE DEPTH0.438 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
OVERALL HEIGHT0.625 INCHES NOMINAL IN
MATERIAL HARDNESS RATING65.0 DUROMETER MINIMUM AND 75.0 DUROMETER MAXIMUM
COLORBLACK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
MEP026AInterchangeable
interchangeable cross-reference
interchangeable
MIL-G-52732/8Interchangeable
interchangeable cross-reference
interchangeable
5802Interchangeable
interchangeable cross-reference
interchangeable
5KK482Interchangeable
interchangeable cross-reference
interchangeable
43Interchangeable
interchangeable cross-reference
interchangeable
403722Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50MS592?
50MS592 is a BUMPER.
What parts can replace 50MS592?
There are 17 known substitutes for 50MS592: MEP026A, MIL-G-52732/8, 5802 and 14 more. Substitute compatibility should be verified for your specific system.
Is 50MS592 still available?
50MS592 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