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G3861 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

G3861: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, outside_diameter: 1.250 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.562 INCHES NOMINAL IN, cross-sectional_thickness: 0.140 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-356-1221, 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
G3861
NSN: 5330-00-356-1221
FSC: 5330 — Packing and Gasket Materials
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
materialRUBBER OVERALL
outside_diameter1.250 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.562 INCHES NOMINAL IN
cross-sectional_thickness0.140 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-356-1221
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G3861 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 THICKNESS: 0.140 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.562 INCHES NOMINAL IN
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.140 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
APERTURE DIAMETER0.562 INCHES NOMINAL IN
MATERIALRUBBER OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
WPP2626Reference document
Same NSN cross-reference
Reference document — Secondary reference
18812Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
020198Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
31G3861Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is G3861?
G3861 is a GASKET.
What parts can replace G3861?
There are 4 known substitutes for G3861: WPP2626, 18812, 020198 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G3861?
G3861 is cataloged in the U.S. Government catalog under NSN 5330-00-356-1221. This indicates validated use in U.S. government and defense supply chains.
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