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2031377 — FELT,MECHANICAL,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2031377: FELT,MECHANICAL,PREFORMED.

The FELT,MECHANICAL,PREFORMED is a the manufacturer industrial component. Key specifications include material: WOOL COMP 16R3 OVERALL, outside_diameter: 4.750 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.750 INCHES NOMINAL IN, cross-sectional_width: 1.000 INCHES NOMINAL IN, cross-sectional_height: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-616-7770, 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
2031377
NSN: 5330-00-616-7770
FSC: 5330 — Packing and Gasket Materials
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialWOOL COMP 16R3 OVERALL
outside_diameter4.750 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.750 INCHES NOMINAL IN
cross-sectional_width1.000 INCHES NOMINAL IN
cross-sectional_height0.438 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE F3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-616-7770
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2031377 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: 0.438 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE F3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 4.750 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.750 INCHES NOMINAL IN
•
MATERIAL: WOOL COMP 16R3 OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.438 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH1.000 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONSAE F3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER4.750 INCHES NOMINAL IN
APERTURE DIAMETER3.750 INCHES NOMINAL IN
MATERIALWOOL COMP 16R3 OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
JT10503Reference document
Same NSN cross-reference
Reference document — Secondary reference
667390Reference document
Same NSN cross-reference
Reference document — Secondary reference
353032Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2031377?
2031377 is a FELT,MECHANICAL,PREFORMED.
What parts can replace 2031377?
There are 3 known substitutes for 2031377: JT10503, 667390, 353032. Substitute compatibility should be verified for your specific system.
What is the NSN for 2031377?
2031377 is cataloged in the U.S. Government catalog under NSN 5330-00-616-7770. 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.