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4M1851 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4M1851: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: CORK OVERALL, peripheral_diameter: 3.480 INCHES NOMINAL IN, center_hole_diameter: 3.100 INCHES NOMINAL IN, cross-sectional_height: 0.078 INCHES NOMINAL IN, cross-sectional_shape_style: OVAL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-976-4695, 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
4M1851
NSN: 5330-00-976-4695
FSC: 5330 — Packing and Gasket Materials
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialCORK OVERALL
peripheral_diameter3.480 INCHES NOMINAL IN
center_hole_diameter3.100 INCHES NOMINAL IN
cross-sectional_height0.078 INCHES NOMINAL IN
cross-sectional_shape_styleOVAL
NSN5330-00-976-4695
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4M1851 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: 0.078 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: OVAL
•
PERIPHERAL DIAMETER: 3.480 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.100 INCHES NOMINAL IN
•
MATERIAL: CORK OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.078 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEOVAL
PERIPHERAL DIAMETER3.480 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.100 INCHES NOMINAL IN
MATERIALCORK OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
125-3694Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
IPD4M1851Reference document
Same NSN cross-reference
Reference document — Secondary reference
1945476Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
72075Reference document
Same NSN cross-reference
Reference document — Secondary reference
5330009764695Reference document
Same NSN cross-reference
Reference document — Secondary reference
526SX51Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4M1851?
4M1851 is a PACKING,PREFORMED.
What parts can replace 4M1851?
There are 6 known substitutes for 4M1851: 125-3694, IPD4M1851, 1945476 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4M1851?
4M1851 is cataloged in the U.S. Government catalog under NSN 5330-00-976-4695. This indicates validated use in U.S. government and defense supply chains.
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