The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-237-0180, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-237-0180 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 4.000 INCHES NOMINAL OVERALL IN |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Exterior Color | BLACK |
| Inside Diameter | 0.437 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Material | RUBBER CHLOROPRENE CLASS CR TUBE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| A-308 | 3/9 Design control — primary reference Mar-Vel International, Inc. Dba Mar-Vel Underwater Equip |
NSN 4720-01-237-0180 is a Tubing,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-322-0495, 5360-01-581-9523. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-01-237-0180: Measuring Method and Length: 4.000 INCHES NOMINAL OVERALL IN; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND; Exterior Color: BLACK. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.