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R4-6C — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

R4-6C: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: ASBESTOS CHRYSOTILE AND STEEL COMP 304 OVERALL, temp_rating: 875.0 FAHRENHEIT DEGF, outside_diameter: 1.688 INCHES NOMINAL IN, aperture_diameter: 1.312 INCHES NOMINAL IN, maximum_pressure_rating: 600.0 POUNDS PER SQUARE INCH (PSI) LBS, cross-sectional_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-162-5377, 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
R4-6C
NSN: 5330-00-162-5377
NIINs: 001625377, 014709452
FSC: 5330 — Packing and Gasket Materials
CAGE: 72433 — FLEXITALLIC GASKET CO INC (USA)
SPECIFICATIONS
materialASBESTOS CHRYSOTILE AND STEEL COMP 304 OVERALL
temp_rating875.0 FAHRENHEIT DEGF
outside_diameter1.688 INCHES NOMINAL IN
aperture_diameter1.312 INCHES NOMINAL IN
maximum_pressure_rating600.0 POUNDS PER SQUARE INCH (PSI) LBS
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND NONMETALLIC MATERIALS
NSN5330-00-162-5377
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R4-6C 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
•
TEMP RATING: 875.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL THICKNESS: 0.125 INCHES NOMINAL IN
•
MAXIMUM PRESSURE RATING: 600.0 POUNDS PER SQUARE INCH (PSI) LBS
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND NONMETALLIC MATERIALS
•
OUTSIDE DIAMETER: 1.688 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.312 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS CHRYSOTILE AND STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS
TEMP RATING875.0 FAHRENHEIT DEGF
CROSS-SECTIONAL THICKNESS0.125 INCHES NOMINAL IN
MAXIMUM PRESSURE RATING600.0 POUNDS PER SQUARE INCH (PSI) LBS
CROSS-SECTIONAL SHAPE STYLEMETAL AND NONMETALLIC MATERIALS
OUTSIDE DIAMETER1.688 INCHES NOMINAL IN
APERTURE DIAMETER1.312 INCHES NOMINAL IN
MATERIALASBESTOS CHRYSOTILE AND STEEL COMP 304 OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
A3304PC335149Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
HAZMAT per U.S. Government catalogNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R4-6C?
R4-6C is a GASKET.
What parts can replace R4-6C?
There is 1 known substitute for R4-6C: A3304PC335149. Substitute compatibility should be verified for your specific system.
What is the NSN for R4-6C?
R4-6C is cataloged in the U.S. Government catalog under NSN 5330-00-162-5377. 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.