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Technical Data Sheet
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CU77 — CU77

✓ Government record, cited
OERLIKON METCO US INC · ORING SEAL
PRODUCT OVERVIEW

CU77: CU77.

The CU77 is a OERLIKON METCO US INC industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-454-6219, 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
CU77
NSN: 5331-01-454-6219
FSC: 5331 — O-ring
CAGE: 01FK3 — OERLIKON METCO US INC (USA)
SPECIFICATIONS
Part NumberCU77
ManufacturerOERLIKON METCO US INC
NSN5331-01-454-6219
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CU77 MFR: OERLIKON METCO US INC ⚠ 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CU77?
CU77 is a CU77 manufactured by OERLIKON METCO US INC.
What is the NSN for CU77?
CU77 is cataloged in the U.S. Government catalog under NSN 5331-01-454-6219. This indicates validated use in U.S. government and defense supply chains.
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