PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55YHose,air Duct

Dynatect Ro-Lab, Inc. · NSN 4720-00-168-2107 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-168-2107 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-168-2107. Primary manufacturer part number: 55Y.
Features
  • Hose,air Duct — FSC 4720
  • Material: RUBBER FIRST PLY
  • Material: STEEL REINFORCING WIRE
  • Cross-Sectional Shape Style: ROUND
  • Inside Diameter: 5.500 INCHES NOMINAL FIRST END IN
  • 2 verified cross-references
  • Primary manufacturer: Dynatect Ro-Lab, Inc.
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber First Ply construction
General Description

The Hose,air Duct, cataloged under National Stock Number 4720-00-168-2107, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Dynatect Ro-Lab, Inc.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-00-168-2107
Primary Part Number55Y
Item NameHose,air Duct
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerDynatect Ro-Lab, Inc.
StatusACTIVE
MaterialRUBBER FIRST PLY
MaterialSTEEL REINFORCING WIRE
Cross-Sectional Shape StyleROUND
Inside Diameter5.500 INCHES NOMINAL FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2990-00-142-02331916 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
Cross-Reference Index
Part NumberManufacturer
205-4510947-49 Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA)
55Y PRIMARY Dynatect Ro-Lab, Inc. (USA)
Related Parts
2990-00-142-0233INTERCHANGEABLE
MUFFLER,EXHAUST
1916

Frequently Asked Questions

What is NSN 4720-00-168-2107?

NSN 4720-00-168-2107 is a Hose,air Duct, manufactured by Dynatect Ro-Lab, Inc., classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-00-168-2107?

NSN 4720-00-168-2107 has 2 cross-referenced part numbers: 205-4510947-49 (Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace), 55Y (Dynatect Ro-Lab, Inc.).

What NSN replaces 4720-00-168-2107?

There is 1 known substitute for 4720-00-168-2107: 2990-00-142-0233. Verify interchangeability with system specifications before substitution.

What are the specifications of 55Y?

Key specifications for 55Y: Material: RUBBER FIRST PLY; Material: STEEL REINFORCING WIRE; Cross-Sectional Shape Style: ROUND; Inside Diameter: 5.500 INCHES NOMINAL FIRST END IN. 4 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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