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9445781 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9445781: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, peripheral_diameter: 4.219 INCHES NOMINAL IN, center_hole_diameter: 3.281 INCHES NOMINAL IN, cross-sectional_height: 0.562 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-125-4690, 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
9445781
NSN: 5330-00-125-4690
FSC: 5330 — Packing and Gasket Materials
CAGE: K3861 — THALES SECURITY SYSTEMS UK LIMITED (GBR)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
peripheral_diameter4.219 INCHES NOMINAL IN
center_hole_diameter3.281 INCHES NOMINAL IN
cross-sectional_height0.562 INCHES NOMINAL IN
cross-sectional_shape_styleU
NSN5330-00-125-4690
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9445781 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
•
CROSS-SECTIONAL HEIGHT: 0.562 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: U
•
PERIPHERAL DIAMETER: 4.219 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.281 INCHES NOMINAL IN
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.562 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEU
PERIPHERAL DIAMETER4.219 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.281 INCHES NOMINAL IN
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
4681-37Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9445781?
9445781 is a PACKING,PREFORMED.
What parts can replace 9445781?
There is 1 known substitute for 9445781: 4681-37. Substitute compatibility should be verified for your specific system.
What is the NSN for 9445781?
9445781 is cataloged in the U.S. Government catalog under NSN 5330-00-125-4690. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.