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A-3873-9 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A-3873-9: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, overall_height: 0.6870 INCHES NOMINAL IN, groove_diameter: 0.2340 INCHES NOMINAL IN, special_features: THE ITEM IS MADE FROM SAE SPEC. J200 2XA615, style_designator: DOUBLE FLANGE, top_flange_width: 0.3570 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-459-3364, 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
A-3873-9
NSN: 5340-01-459-3364
FSC: 5340 — Hardware, Commercial
CAGE: 72914 — GRIMES AEROSPACE COMPANY (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
overall_height0.6870 INCHES NOMINAL IN
groove_diameter0.2340 INCHES NOMINAL IN
special_featuresTHE ITEM IS MADE FROM SAE SPEC. J200 2XA615
style_designatorDOUBLE FLANGE
top_flange_width0.3570 INCHES NOMINAL IN
bottom_flange_width0.2600 INCHES NOMINAL IN
bottom_flange_diameter0.3570 INCHES NOMINAL IN
outside/top_flange_diameter0.3100 INCHES NOMINAL IN
NSN5340-01-459-3364
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-3873-9 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
•
BOTTOM FLANGE DIAMETER: 0.3570 INCHES NOMINAL IN
•
OUTSIDE/TOP FLANGE DIAMETER: 0.3100 INCHES NOMINAL IN
•
GROOVE DIAMETER: 0.2340 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DOUBLE FLANGE
•
BOTTOM FLANGE WIDTH: 0.2600 INCHES NOMINAL IN
•
TOP FLANGE WIDTH: 0.3570 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BOTTOM FLANGE DIAMETER0.3570 INCHES NOMINAL IN
OVERALL HEIGHT0.6870 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.3100 INCHES NOMINAL IN
GROOVE DIAMETER0.2340 INCHES NOMINAL IN
STYLE DESIGNATORDOUBLE FLANGE
BOTTOM FLANGE WIDTH0.2600 INCHES NOMINAL IN
SPECIAL FEATURESTHE ITEM IS MADE FROM SAE SPEC. J200 2XA615
TOP FLANGE WIDTH0.3570 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-3873-9?
A-3873-9 is a BUMPER.
What is the NSN for A-3873-9?
A-3873-9 is cataloged in the U.S. Government catalog under NSN 5340-01-459-3364. 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.