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Technical Data Sheet
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7940-16 — RING,BOSS SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7940-16: RING,BOSS SEAL.

The RING,BOSS SEAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-091-7651, 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
7940-16
NSN: 5330-01-091-7651
NIINs: 010917651, 011282459
FSC: 5330 — Packing and Gasket Materials
CAGE: 99447 — COOPER INTERCONNECT, INC. DBA COOPER INTERCONNECT DIV INTERCONNECT (USA)
SPECIFICATIONS
Part Number7940-16
NSN5330-01-091-7651
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7940-16 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 3
5330PL1259517Reference document
Same NSN cross-reference
Reference document — Informative reference only
HS103-16Reference document
Same NSN cross-reference
Reference document — Secondary reference
PL10101-3MOD3 ITEM 134Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7940-16?
7940-16 is a RING,BOSS SEAL.
What parts can replace 7940-16?
There are 3 known substitutes for 7940-16: 5330PL1259517, HS103-16, PL10101-3MOD3 ITEM 134. Substitute compatibility should be verified for your specific system.
What is the NSN for 7940-16?
7940-16 is cataloged in the U.S. Government catalog under NSN 5330-01-091-7651. This indicates validated use in U.S. government and defense supply chains.
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