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Technical Data Sheet
PartsTable / O-RING / 40-4V300
40-4V300 ✓ 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, outside_diameter: 3.230 INCHES MINIMUM AND 3.294 INCHES MAXIMUM IN, center_hole_diameter: 2.969 INCHES MINIMUM AND 2.999 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-576-9733, 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
40-4V300
NSN: 5331-00-576-9733
FSC: 5331 — O-RING
CAGE: 26840 — HALE PRODUCTS, INC. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter3.230 INCHES MINIMUM AND 3.294 INCHES MAXIMUM IN
center_hole_diameter2.969 INCHES MINIMUM AND 2.999 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-576-9733
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40-4V300 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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 3.230 INCHES MINIMUM AND 3.294 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 2.969 INCHES MINIMUM AND 2.999 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER3.230 INCHES MINIMUM AND 3.294 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.969 INCHES MINIMUM AND 2.999 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
KA500PC65Interchangeable
interchangeable cross-reference
interchangeable
SG3245PC29Interchangeable
interchangeable cross-reference
interchangeable
N304-7-12Interchangeable
interchangeable cross-reference
interchangeable
P1052-13Interchangeable
interchangeable cross-reference
interchangeable
DS-930572Interchangeable
interchangeable cross-reference
interchangeable
23111-99-0325Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40-4V300?
40-4V300 is a O-RING.
What parts can replace 40-4V300?
There are 23 known substitutes for 40-4V300: KA500PC65, SG3245PC29, N304-7-12 and 20 more. Substitute compatibility should be verified for your specific system.
Is 40-4V300 still available?
40-4V300 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026