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Technical Data Sheet
PartsTable / COMPONENT / 0403-0004
0403-0004 ✓ 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: 0.188 INCHES NOMINAL IN, overall_height: 0.813 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, first_counterbore_depth: 0.469 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-846-8451, 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
0403-0004
NSN: 5340-00-846-8451
FSC: 5340
CAGE: 1LQK8 — KEYSIGHT TECHNOLOGIES, INC. (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER SYNTHETIC
hole_diameter0.188 INCHES NOMINAL IN
overall_height0.813 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.469 INCHES NOMINAL IN
first_counterbore_diameter0.391 INCHES NOMINAL IN
outside/top_flange_diameter1.000 INCHES NOMINAL IN
NSN5340-00-846-8451
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0403-0004 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
•
FIRST COUNTERBORE DIAMETER: 0.391 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
FIRST COUNTERBORE DEPTH: 0.469 INCHES NOMINAL IN
•
COLOR: BLACK
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
OUTSIDE/TOP FLANGE DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST COUNTERBORE DIAMETER0.391 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
FIRST COUNTERBORE DEPTH0.469 INCHES NOMINAL IN
OVERALL HEIGHT0.813 INCHES NOMINAL IN
COLORBLACK
HOLE DIAMETER0.188 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
OUTSIDE/TOP FLANGE DIAMETER1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
31-50704-500Upgraded Successor
successor cross-reference
successor
31-50704-502Upgraded Successor
successor cross-reference
successor
C2561-9-4TAPSInterchangeable
interchangeable cross-reference
interchangeable
39-90Interchangeable
interchangeable cross-reference
interchangeable
EX3944AInterchangeable
interchangeable cross-reference
interchangeable
TA1-325-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0403-0004?
0403-0004 is a BUMPER.
What parts can replace 0403-0004?
There are 15 known substitutes for 0403-0004: 31-50704-500, 31-50704-502, C2561-9-4TAPS and 12 more. Substitute compatibility should be verified for your specific system.
Is 0403-0004 still available?
0403-0004 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