The Insulation Sleeving,thermal, cataloged under National Stock Number 5640-01-237-9810, is classified within Federal Supply Class 5640 (Wallboard, Building Paper, and Thermal Insulation Materials) of the Construction and Building Materials group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-01-237-9810 |
| Item Name | Insulation Sleeving,thermal |
| FSC / FSG | 5640 / 56 — Wallboard, Building Paper, and Thermal Insulation Materials |
| Status | ACTIVE |
| Material Density | 4.5 POUNDS PER CUBIC FOOT MINIMUM AND 8.5 POUNDS PER CUBIC FOOT MAXIMUM LBS |
| Length | 72.000 INCHES NOMINAL IN |
| Design Form | FULL ROUND |
| Insulation Thickness | 0.375 INCHES NOMINAL IN |
| Layer Quantity | 1 |
| Temp Rating | -20.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| Flexibility | FLEXIBLE |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Material | PLASTIC LOCATION NOT OTHERWISE SPECIFIED |
| Fabrication Method | EXPANDED |
| Flammability Rating | NOT RATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 000-8002-352 | 5/1 Secondary reference U.S. Government activity |
| MIL-P-15280 FMT | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 6 3/8-3/8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5640-01-237-9810 is a Insulation Sleeving,thermal, classified under FSC 5640, Wallboard, Building Paper, and Thermal Insulation Materials. Status: active.
Key specifications for 5640-01-237-9810: Material Density: 4.5 POUNDS PER CUBIC FOOT MINIMUM AND 8.5 POUNDS PER CUBIC FOOT MAXIMUM LBS; Length: 72.000 INCHES NOMINAL IN; Design Form: FULL ROUND; Insulation Thickness: 0.375 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.