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4LC2 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4LC2: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q OVERALL, overall_width: 1.812 INCHES NOMINAL IN, aperture_width: 1.375 INCHES NOMINAL IN, overall_length: 3.938 INCHES NOMINAL IN, aperture_length: 3.562 INCHES NOMINAL IN, hardness_rating: 40.0 SHORE DUROMETER A NOMINAL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-202-6741, 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
4LC2
NSN: 5330-01-202-6741
FSC: 5330 — Packing and Gasket Materials
CAGE: 12763 — DYNALEC CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q OVERALL
overall_width1.812 INCHES NOMINAL IN
aperture_width1.375 INCHES NOMINAL IN
overall_length3.938 INCHES NOMINAL IN
aperture_length3.562 INCHES NOMINAL IN
hardness_rating40.0 SHORE DUROMETER A NOMINAL OVERALL
style_designatorNON-CIRCULAR
inside_corner_radius0.125 INCHES NOMINAL IN
outside_corner_radius0.250 INCHES NOMINAL IN
cross-sectional_thickness0.063 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationZZ-R-765 CLASS 2A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
NSN5330-01-202-6741
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4LC2 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: 0.063 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.125 INCHES NOMINAL IN
•
OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG WIDTH: 0.218 INCHES NOMINAL IN
•
HARDNESS RATING: 40.0 SHORE DUROMETER A NOMINAL OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 CLASS 2A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.063 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.125 INCHES NOMINAL IN
OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG WIDTH0.218 INCHES NOMINAL IN
HARDNESS RATING40.0 SHORE DUROMETER A NOMINAL OVERALL
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 CLASS 2A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A
OVERALL LENGTH3.938 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.812 INCHES NOMINAL IN
APERTURE WIDTH1.375 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
A4245Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 4LC2?
4LC2 is a GASKET.
What parts can replace 4LC2?
There is 1 known substitute for 4LC2: A4245. Substitute compatibility should be verified for your specific system.
What is the NSN for 4LC2?
4LC2 is cataloged in the U.S. Government catalog under NSN 5330-01-202-6741. 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.