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989409 — REDUCER,TUBE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

989409: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, seat_angle: 37.0 DEGREES FIRST END, reducer_type: CONCENTRIC, thread_class: 2B SECOND END, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL (BOSS) SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-291-1653, 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
989409
NSN: 5330-00-291-1653
NIINs: 002911653, 012924354
FSC: 5330 — Packing and Gasket Materials
CAGE: 97907 — TEREX CORP (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
seat_angle37.0 DEGREES FIRST END
reducer_typeCONCENTRIC
thread_class2B SECOND END
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL (BOSS) SECOND END
nominal_thread_size0.750 INCHES FIRST END IN
nominal_outside_diameter_tube_accommodated0.500 INCHES FIRST END IN
NSN5330-00-291-1653
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 989409 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
•
SEAL WIDTH: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 5.374 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 4.000 INCHES NOMINAL IN
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER5.374 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER4.000 INCHES NOMINAL IN
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 6
43-1344Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
ASD1602Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A1205T436Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
49915Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
61174Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
55512Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 989409?
989409 is a REDUCER,TUBE.
What parts can replace 989409?
There are 6 known substitutes for 989409: 43-1344, ASD1602, A1205T436 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 989409?
989409 is cataloged in the U.S. Government catalog under NSN 5330-00-291-1653. 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.