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RB-516-120 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

RB-516-120: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, hole_diameter: 0.250 INCHES NOMINAL IN, overall_height: 0.625 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, end_item_identification: 5419-01-539-7182, part_name_assigned_by_controlling_agency: METAL CORE BUMPER. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-643-9425, 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
RB-516-120
NSN: 5340-01-643-9425
FSC: 5340 — Hardware, Commercial
CAGE: 50433 — FAIRLANE TOOL COMPANY, INC. DIV FAIRLANE TOOL (USA)
SPECIFICATIONS
materialRUBBER
hole_diameter0.250 INCHES NOMINAL IN
overall_height0.625 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
end_item_identification5419-01-539-7182
part_name_assigned_by_controlling_agencyMETAL CORE BUMPER
NSN5340-01-643-9425
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RB-516-120 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
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
COLOR: BLACK
•
MATERIAL: RUBBER
•
HOLE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.625 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
COLORBLACK
PART NAME ASSIGNED BY CONTROLLING AGENCYMETAL CORE BUMPER
END ITEM IDENTIFICATION5419-01-539-7182
MATERIALRUBBER
HOLE DIAMETER0.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
9546K76Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RB-516-120?
RB-516-120 is a BUMPER.
What parts can replace RB-516-120?
There is 1 known substitute for RB-516-120: 9546K76. Substitute compatibility should be verified for your specific system.
What is the NSN for RB-516-120?
RB-516-120 is cataloged in the U.S. Government catalog under NSN 5340-01-643-9425. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.