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8402W — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8402W: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, hole_diameter: 0.199 INCHES NOMINAL IN, overall_height: 0.438 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, first_counterbore_depth: 0.250 INCHES NOMINAL IN, first_counterbore_diameter: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-163-9796, 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
8402W
NSN: 5340-00-163-9796
FSC: 5340 — Hardware, Commercial
CAGE: 73801 — GREENE RUBBER COMPANY, INC. (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
hole_diameter0.199 INCHES NOMINAL IN
overall_height0.438 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.250 INCHES NOMINAL IN
first_counterbore_diameter0.312 INCHES NOMINAL IN
outside/top_flange_diameter0.625 INCHES NOMINAL IN
NSN5340-00-163-9796
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8402W 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.625 INCHES NOMINAL IN
•
FIRST COUNTERBORE DIAMETER: 0.312 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
FIRST COUNTERBORE DEPTH: 0.250 INCHES NOMINAL IN
•
COLOR: NATURAL
•
MATERIAL: RUBBER SYNTHETIC
•
HOLE DIAMETER: 0.199 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.438 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.625 INCHES NOMINAL IN
FIRST COUNTERBORE DIAMETER0.312 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
FIRST COUNTERBORE DEPTH0.250 INCHES NOMINAL IN
COLORNATURAL
MATERIALRUBBER SYNTHETIC
HOLE DIAMETER0.199 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
TGRSA5002Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8402W?
8402W is a BUMPER.
What parts can replace 8402W?
There is 1 known substitute for 8402W: TGRSA5002. Substitute compatibility should be verified for your specific system.
What is the NSN for 8402W?
8402W is cataloged in the U.S. Government catalog under NSN 5340-00-163-9796. 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.