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19943-2 — COUPLING ASSEMBLY,QUICK DISCONNE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

19943-2: COUPLING ASSEMBLY,QUICK DISCONNE.

COUPLING ASSEMBLY,QUICK DISCONNE. Key specifications include connection_type: THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION, connection_style: PLAIN FIRST FLUID END CONNECTION, nominal_thread_size: 0.250 INCHES FIRST FLUID END CONNECTION IN, thread_series_designator: NPT FIRST FLUID END CONNECTION. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-290-5169, 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
19943-2
NSN: 5330-00-290-5169
NIINs: 002905169, 012059361
FSC: 5330 — Packing and Gasket Materials
CAGE: 05168 — ELSAG BAILEY INC (USA)
SPECIFICATIONS
connection_typeTHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
connection_stylePLAIN FIRST FLUID END CONNECTION
nominal_thread_size0.250 INCHES FIRST FLUID END CONNECTION IN
thread_series_designatorNPT FIRST FLUID END CONNECTION
NSN5330-00-290-5169
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 19943-2 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
•
CROSS-SECTIONAL HEIGHT: 0.250 INCHES NOMINAL IN
•
RIM SURFACE WIDTH: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
PERIPHERAL DIAMETER: 0.938 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.688 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS AND COPPER ALLOY AND LEAD OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
RIM SURFACE WIDTH0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
PERIPHERAL DIAMETER0.938 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.688 INCHES NOMINAL IN
MATERIALASBESTOS AND COPPER ALLOY AND LEAD OVERALL
JOINT TYPESCARF-PERIPHERAL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
19943A2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 19943-2?
19943-2 is a COUPLING ASSEMBLY,QUICK DISCONNE.
What parts can replace 19943-2?
There is 1 known substitute for 19943-2: 19943A2. Substitute compatibility should be verified for your specific system.
What is the NSN for 19943-2?
19943-2 is cataloged in the U.S. Government catalog under NSN 5330-00-290-5169. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.