PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SECO27CT2LSeal,conical,flared Tube Fitting

Seco Seals, Inc · NSN 4730-01-211-9399 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-211-9399 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-211-9399. Primary manufacturer part number: SECO27CT2L.
Features
  • Seal,conical,flared Tube Fitting — FSC 4730
  • Wall Thickness: 0.005 INCHES NOMINAL IN
  • Seat Angle in Deg: 37.0
  • Outside Diameter: 0.255 INCHES NOMINAL IN
  • Hose/tube Outside Diameter for Which Designed: 0.125 INCHES NOMINAL IN
  • Body Length: 0.240 INCHES NOMINAL IN
  • Style Designator: SEAL
  • Material: COPPER ALLOY
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Seal,conical,flared Tube Fitting, cataloged under National Stock Number 4730-01-211-9399, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Seco Seals, Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-211-9399
Primary Part NumberSECO27CT2L
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSeco Seals, Inc
StatusACTIVE
Wall Thickness0.005 INCHES NOMINAL IN
Seat Angle in Deg37.0
Outside Diameter0.255 INCHES NOMINAL IN
Hose/tube Outside Diameter for Which Designed0.125 INCHES NOMINAL IN
Body Length0.240 INCHES NOMINAL IN
Style DesignatorSEAL
MaterialCOPPER ALLOY
Surface TreatmentTIN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-078-8519SEC027C12L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Howmet Global Fastening Systems Inc Div Torrance Operations
4730-00-871-13397M27A4 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
4730-00-871-1340SEC027A6 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Seco Seals, Inc
4730-00-960-300210158973-2 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Us Army Aviation and Missile Command
4730-01-102-59647M27CT16 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
4730-01-117-6589DY90-T-12L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
4730-01-286-8841DY90-T-3L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
Cross-Reference Index
Part NumberManufacturer
SECO27CT2L PRIMARY Seco Seals, Inc (USA)
VSF1015CT2 Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
VSF1015CT2 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
DY90 Del Aerospace Inc Dba Del Aerospace Inc (USA)
DY90-T-2L PRIMARY Del Aerospace Inc Dba Del Aerospace Inc (USA)
7M27 The Boeing Company Div Defense (USA)
VSF1015CT2 Howmet Global Fastening Systems Inc Div Rosan / Eagle Products (USA)
7M27CT2 PRIMARY The Boeing Company Div Defense (USA)
VSF1015CT2SP Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
SEC027CT2 Seco Seals, Inc (USA)
Related Parts
4730-00-078-8519INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027C12L
4730-00-871-1339INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27A4
4730-00-871-1340INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027A6
4730-00-960-3002INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
10158973-2
4730-01-102-5964INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27CT16
4730-01-117-6589INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-T-12L
4730-01-286-8841INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-T-3L

Frequently Asked Questions

What is NSN 4730-01-211-9399?

NSN 4730-01-211-9399 is a Seal,conical,flared Tube Fitting, manufactured by Seco Seals, Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-211-9399?

NSN 4730-01-211-9399 has 10 cross-referenced part numbers: SECO27CT2L (Seco Seals, Inc), VSF1015CT2 (Howmet Global Fastening Systems Inc Div Torrance Operations), VSF1015CT2 (Howmet Global Fastening Systems Inc Div Rosan Products), DY90 (Del Aerospace Inc Dba Del Aerospace Inc), DY90-T-2L (Del Aerospace Inc Dba Del Aerospace Inc) and 5 more.

What NSN replaces 4730-01-211-9399?

There are 7 known substitutes for 4730-01-211-9399: 4730-00-078-8519, 4730-00-871-1339, 4730-00-871-1340 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SECO27CT2L?

Key specifications for SECO27CT2L: Wall Thickness: 0.005 INCHES NOMINAL IN; Special Features: LOX CLEANED AND PACKAGED IN ACCORDANCE WITH MAC SPECIFICATION 27M100; Seat Angle in Deg: 37.0; Outside Diameter: 0.255 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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