PartsTable
Technical Data Sheet
MIL-777-1-MB ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The HOLDER,DOOR is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-674-8066, 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
MIL-777-1-MB
NSN: 5340-01-674-8066
FSC: 5340
CAGE: 19220 — EASTERN CO DIV EBERHARD MANUFACTURING (USA)
SPECIFICATIONS
Part NumberMIL-777-1-MB
NSN5340-01-674-8066
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-777-1-MB 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
91-3-18-37 AHUpgraded Successor
successor cross-reference
successor
F91C021Upgraded Successor
successor cross-reference
successor
7771Upgraded Successor
successor cross-reference
successor
666-1Upgraded Successor
successor cross-reference
successor
F3063Interchangeable
interchangeable cross-reference
interchangeable
391441Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
Ready to buy MIL-777-1-MB?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MIL-777-1-MB?
MIL-777-1-MB is a HOLDER,DOOR.
What parts can replace MIL-777-1-MB?
There are 21 known substitutes for MIL-777-1-MB: 91-3-18-37 AH, F91C021, 7771 and 18 more. Substitute compatibility should be verified for your specific system.
Is MIL-777-1-MB still available?
MIL-777-1-MB is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MIL-777-1-MB