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Technical Data Sheet
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3955 ITEM 67 — 3955 ITEM 67

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3955 ITEM 67: 3955 ITEM 67.

The 3955 ITEM 67 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-453-7150, 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
3955 ITEM 67
NSN: 5340-01-453-7150
FSC: 5340 — Hardware, Commercial
CAGE: 34712 — LAKE SHORE SYSTEMS, INC. (USA)
SPECIFICATIONS
Part Number3955 ITEM 67
NSN5340-01-453-7150
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3955 ITEM 67 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
SUBSTITUTES & CROSS-REFERENCES 1
2D3-72 ITEM 77Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 3955 ITEM 67?
3955 ITEM 67 is a 3955 ITEM 67.
What parts can replace 3955 ITEM 67?
There is 1 known substitute for 3955 ITEM 67: 2D3-72 ITEM 77. Substitute compatibility should be verified for your specific system.
What is the NSN for 3955 ITEM 67?
3955 ITEM 67 is cataloged in the U.S. Government catalog under NSN 5340-01-453-7150. This indicates validated use in U.S. government and defense supply chains.
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