PartsTable
Technical Data Sheet
PartsTable / O-RING / N3731
N3731 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 2.853 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN, center_hole_diameter: 2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN, elongation_percentage: 331 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-593-3465, 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
N3731
NSN: 5331-00-593-3465
FSC: 5331 — O-RING
CAGE: D9135 — BAUER KOMPRESSOREN GMBH (DEU)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter2.853 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN
center_hole_diameter2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN
elongation_percentage331 MAXIMUM
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
end_item_identificationARLEIGH BURKE CLASS DDG;KIDD CLASS DDG;WASP CLASS LHD;SPRUANCE CLASS DD(963);AUSTIN SHIP CLASS LPD-4 AMPHIBIOUS TRANSPORT DOCKS
NSN5331-00-593-3465
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N3731 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: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
OUTSIDE DIAMETER: 2.853 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
END ITEM IDENTIFICATIONARLEIGH BURKE CLASS DDG;KIDD CLASS DDG;WASP CLASS LHD;SPRUANCE CLASS DD(963);AUSTIN SHIP CLASS LPD-4 AMPHIBIOUS TRANSPORT DOCKS
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
OUTSIDE DIAMETER2.853 INCHES MINIMUM AND 2.905 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN
ELONGATION PERCENTAGE331 MAXIMUM
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
GV-22-525-1-70Interchangeable
interchangeable cross-reference
interchangeable
006-8307Interchangeable
interchangeable cross-reference
interchangeable
AS3209-039CPInterchangeable
interchangeable cross-reference
interchangeable
SAE-AS3209Interchangeable
interchangeable cross-reference
interchangeable
AMS7276GInterchangeable
interchangeable cross-reference
interchangeable
AS568-039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N3731?
N3731 is a O-RING.
What parts can replace N3731?
There are 13 known substitutes for N3731: GV-22-525-1-70, 006-8307, AS3209-039CP and 10 more. Substitute compatibility should be verified for your specific system.
Is N3731 still available?
N3731 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026