The Insulation Sleeving,thermal, cataloged under National Stock Number 5640-00-237-4797, 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 9 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5640-00-237-4797 |
| Item Name | Insulation Sleeving,thermal |
| FSC / FSG | 5640 / 56 — Wallboard, Building Paper, and Thermal Insulation Materials |
| Status | ACTIVE |
| Length | 72.000 INCHES NOMINAL IN |
| Design Form | FULL ROUND |
| Insulation Thickness | 0.500 INCHES NOMINAL IN |
| Layer Quantity | 1 |
| Supplementary Features | EXPANDED UNICELLULAR PLASTIC FOAM |
| Flexibility | FLEXIBLE |
| Inside Diameter | 1.375 INCHES NOMINAL IN |
| Fabrication Method | EXPANDED |
| Flammability Rating | NOT RATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| R-180-FS-1 3/8-1/2 | 5/9 Secondary reference U.S. Government activity |
| APT113813 | 5/9 Secondary reference Armacell Llc |
| APT13813 | 5/9 Secondary reference Armstrong World Industries Inc |
| MIL-P-15280 FMT | 5/1 Secondary reference U.S. Government activity |
| JI53138 | C/1 Advisory reference — outside the item-of-supply concept Ferguson Waterworks |
| 1000500-22 | 5/9 Secondary reference Tld Ace Corp Div Tld Ace |
| MIL-P-15280 | 4/1 Identification reference U.S. Government activity |
NSN 5640-00-237-4797 is a Insulation Sleeving,thermal, classified under FSC 5640, Wallboard, Building Paper, and Thermal Insulation Materials. Status: active.
Key specifications for 5640-00-237-4797: Length: 72.000 INCHES NOMINAL IN; Design Form: FULL ROUND; Insulation Thickness: 0.500 INCHES NOMINAL IN; Layer Quantity: 1. 9 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.