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1977616 ITEM 20 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1977616 ITEM 20: GASKET.

The GASKET is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-316-7998, 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
1977616 ITEM 20
NSN: 5330-01-316-7998
FSC: 5330 — Packing and Gasket Materials
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
Part Number1977616 ITEM 20
NSN5330-01-316-7998
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1977616 ITEM 20 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

No substitute or cross-reference records for this part.

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 1977616 ITEM 20?
1977616 ITEM 20 is a GASKET.
What is the NSN for 1977616 ITEM 20?
1977616 ITEM 20 is cataloged in the U.S. Government catalog under NSN 5330-01-316-7998. This indicates validated use in U.S. government and defense supply chains.
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