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Technical Data Sheet
PartsTable / O-RING / AMS3238
AMS3238 ✓ 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 SYNTHETIC, outside_diameter: 0.368 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, center_hole_diameter: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN, cross-sectional_height: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-542-1724, 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
AMS3238
NSN: 5331-00-542-1724
FSC: 5331 — O-RING
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
outside_diameter0.368 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
center_hole_diameter0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
cross-sectional_height0.125 INCHES NOMINAL IN
NSN5331-00-542-1724
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AMS3238 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: 0.125 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC
•
OUTSIDE DIAMETER: 0.368 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.234 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
OUTSIDE DIAMETER0.368 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
740621Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-3533Interchangeable
interchangeable cross-reference
interchangeable
AS 568-010Interchangeable
interchangeable cross-reference
interchangeable
101-00500Interchangeable
interchangeable cross-reference
interchangeable
MS28775-010Interchangeable
interchangeable cross-reference
interchangeable
58-010-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMS3238?
AMS3238 is a O-RING.
What parts can replace AMS3238?
There are 24 known substitutes for AMS3238: 740621, MIL-R-3533, AS 568-010 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AMS3238?
AMS3238 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-542-1724. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026