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Technical Data Sheet
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408E — RING BACK UP

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

408E: RING BACK UP.

The RING BACK UP is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-341-9914, 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
408E
NSN: 5330-00-341-9914
FSC: 5330 — Packing and Gasket Materials
CAGE: 52147 — MILTON ROY CO FLOW CONTROL DIV (USA)
SPECIFICATIONS
Part Number408E
NSN5330-00-341-9914
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 408E 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
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
408-0073-141Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 408E?
408E is a RING BACK UP.
What parts can replace 408E?
There is 1 known substitute for 408E: 408-0073-141. Substitute compatibility should be verified for your specific system.
What is the NSN for 408E?
408E is cataloged in the U.S. Government catalog under NSN 5330-00-341-9914. This indicates validated use in U.S. government and defense supply chains.
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