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721G8FS-777-P2 — 721G8FS-777-P2

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

721G8FS-777-P2: 721G8FS-777-P2.

The 721G8FS-777-P2 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-539-6374, 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
721G8FS-777-P2
NSN: 5331-01-539-6374
FSC: 5331 — O-ring
CAGE: 5F573 — GREENE TWEED & CO INC (USA)
SPECIFICATIONS
Part Number721G8FS-777-P2
NSN5331-01-539-6374
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 721G8FS-777-P2 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
KEY FEATURES
•
TEMP RATING: -350.0 FAHRENHEIT AND 350.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.139 INCHES NOMINAL IN
•
HARDNESS RATING: 60.0 SHORE DUROMETER D NOMINAL
•
CENTER HOLE DIAMETER: 1.491 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE
TECHNICAL CHARACTERISTICS
TEMP RATING-350.0 FAHRENHEIT AND 350.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.139 INCHES NOMINAL IN
HARDNESS RATING60.0 SHORE DUROMETER D NOMINAL
SPECIAL FEATURESRING IS NON STANDARD SIZE, AND HAS SPLIT BACK UP
CENTER HOLE DIAMETER1.491 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYINAVY) ACT ROD RING
END ITEM IDENTIFICATIONEA-6B AIRCRAFT
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE
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 721G8FS-777-P2?
721G8FS-777-P2 is a 721G8FS-777-P2.
What is the NSN for 721G8FS-777-P2?
721G8FS-777-P2 is cataloged in the U.S. Government catalog under NSN 5331-01-539-6374. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.