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SECO 7N28 — SEAL,CONICAL,FLARED TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SECO 7N28: SEAL,CONICAL,FLARED TUBE FITTING.

SEAL,CONICAL,FLARED TUBE FITTING. Key specifications include material: NICKEL ALLOY, body_length: 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, wall_thickness: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN, outside_diameter: 2.143 INCHES MINIMUM AND 2.152 INCHES MAXIMUM IN, style_designator: SEAL, seat_angle_in_deg: 37.0. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-070-6009, 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
SECO 7N28
NSN: 4730-01-070-6009
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 33447 — SECO SEALS, INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY
body_length0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
wall_thickness0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
outside_diameter2.143 INCHES MINIMUM AND 2.152 INCHES MAXIMUM IN
style_designatorSEAL
seat_angle_in_deg37.0
casehardening_indicatorCASEHARDENED
hose/tube_outside_diameter_for_which_designed1.750 INCHES NOMINAL IN
NSN4730-01-070-6009
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SECO 7N28 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SEAT ANGLE IN DEG: 37.0
•
STYLE DESIGNATOR: SEAL
•
WALL THICKNESS: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.143 INCHES MINIMUM AND 2.152 INCHES MAXIMUM IN
•
BODY LENGTH: 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: CASEHARDENED
•
MATERIAL: NICKEL ALLOY
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG37.0
STYLE DESIGNATORSEAL
WALL THICKNESS0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.143 INCHES MINIMUM AND 2.152 INCHES MAXIMUM IN
BODY LENGTH0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
CASEHARDENING INDICATORCASEHARDENED
MATERIALNICKEL ALLOY
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.750 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
DY90Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
7N28Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SECO 7N28?
SECO 7N28 is a SEAL,CONICAL,FLARED TUBE FITTING.
What parts can replace SECO 7N28?
There are 2 known substitutes for SECO 7N28: DY90, 7N28. Substitute compatibility should be verified for your specific system.
What is the NSN for SECO 7N28?
SECO 7N28 is cataloged in the U.S. Government catalog under NSN 4730-01-070-6009. 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.