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Technical Data Sheet
PartsTable / COMPONENT / 12321839-2
12321839-2 ✓ 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

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include construction: SOLID, style_designator: CIRCULAR, aperture_diameter: 3.022 INCHES NOMINAL IN, cross-sectional_height: 0.018 INCHES NOMINAL IN, end_item_identification: ARMED BATTLE TANK; MODEL NO. M1E1,NSN 2350-01-087-1095: AND IMPROVED TANK; MODEL NO.

M11A,NSN 2350-01-136-8738, cross-sectional_thickness: 0.005 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 5330-01-213-5331, 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
12321839-2
NSN: 5330-01-213-5331
FSC: 5330
CAGE: 31708 — DUPONT SPECIALTY PRODUCTS USA, LLC (USA)
SPECIFICATIONS
constructionSOLID
style_designatorCIRCULAR
aperture_diameter3.022 INCHES NOMINAL IN
cross-sectional_height0.018 INCHES NOMINAL IN
end_item_identificationARMED BATTLE TANK; MODEL NO. M1E1,NSN 2350-01-087-1095: AND IMPROVED TANK; MODEL NO. M11A,NSN 2350-01-136-8738
cross-sectional_thickness0.005 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
NSN5330-01-213-5331
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12321839-2 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
•
CONSTRUCTION: SOLID
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL HEIGHT: 0.018 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.005 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.022 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
TECHNICAL CHARACTERISTICS (FLIS)
CONSTRUCTIONSOLID
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL HEIGHT0.018 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.005 INCHES NOMINAL IN
APERTURE DIAMETER3.022 INCHES NOMINAL IN
END ITEM IDENTIFICATIONARMED BATTLE TANK; MODEL NO. M1E1,NSN 2350-01-087-1095: AND IMPROVED TANK; MODEL NO. M11A,NSN 2350-01-136-8738
CROSS-SECTIONAL SHAPE STYLESPECIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
031-020-02Interchangeable
interchangeable cross-reference
interchangeable
41818-21Interchangeable
interchangeable cross-reference
interchangeable
1817PInterchangeable
interchangeable cross-reference
interchangeable
10086Interchangeable
interchangeable cross-reference
interchangeable
SCD10588-10086Interchangeable
interchangeable cross-reference
interchangeable
60HSREDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12321839-2?
12321839-2 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace 12321839-2?
There are 25 known substitutes for 12321839-2: 031-020-02, 41818-21, 1817P and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12321839-2?
12321839-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-213-5331. 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