PartsTable
Technical Data Sheet
PartsTable / O-RING / 01-438-0004 ITEM 33
01-438-0004 ITEM 33 ✓ 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. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-013-7774, 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
01-438-0004 ITEM 33
NSN: 5331-00-013-7774
FSC: 5331 — O-RING
CAGE: 52374 — FLOWSERVE CORP DBA AUTOMAX ACTUATORS DIV FLOWSERVE US COMPANY (USA)
SPECIFICATIONS
Part Number01-438-0004 ITEM 33
NSN5331-00-013-7774
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 01-438-0004 ITEM 33 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
6240001558707Interchangeable
interchangeable cross-reference
interchangeable
MS2531-1819Interchangeable
interchangeable cross-reference
interchangeable
1819Interchangeable
interchangeable cross-reference
interchangeable
A146Interchangeable
interchangeable cross-reference
interchangeable
D-701Interchangeable
interchangeable cross-reference
interchangeable
7031700Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 01-438-0004 ITEM 33?
01-438-0004 ITEM 33 is a O-RING.
What parts can replace 01-438-0004 ITEM 33?
There are 22 known substitutes for 01-438-0004 ITEM 33: 6240001558707, MS2531-1819, 1819 and 19 more. Substitute compatibility should be verified for your specific system.
Is 01-438-0004 ITEM 33 still available?
01-438-0004 ITEM 33 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