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788D393 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

788D393: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_height: 1.349 INCHES NOMINAL IN, outside/top_flange_diameter: 15.2450 INCHES MINIMUM AND 15.2455 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-437-2633, 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
788D393
NSN: 5340-01-437-2633
FSC: 5340 — Hardware, Commercial
CAGE: 26741 — MECHANICAL TECHNOLOGY, INCORPORATED DIV MTI INSTRUMENTS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_height1.349 INCHES NOMINAL IN
outside/top_flange_diameter15.2450 INCHES MINIMUM AND 15.2455 INCHES MAXIMUM IN
NSN5340-01-437-2633
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 788D393 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: 15.2450 INCHES MINIMUM AND 15.2455 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.349 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER15.2450 INCHES MINIMUM AND 15.2455 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING
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 788D393?
788D393 is a BUMPER.
What is the NSN for 788D393?
788D393 is cataloged in the U.S. Government catalog under NSN 5340-01-437-2633. 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.