# NSN 1660-01-572-5953: Insulation Pipe Covering, Thermal

NSN 1660-01-572-5953 (also written 1660015725953; NIIN 01-572-5953) is an insulation pipe covering, thermal in Federal Supply Class 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 1660-01-572-5953 (1660015725953)
- NIIN: 01-572-5953 (015725953)
- Item name: INSULATION PIPE COVERING,THERMAL
- Federal Supply Class: [FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment](https://nsnexplorer.com/fsc/1660/)
- Federal Supply Group: [FSG 16](https://nsnexplorer.com/group/16/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | B-2 AIRCRAFT |
| AJAH | UNPACKAGED UNIT HEIGHT | INCHES NOMINAL 6.000 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | COVER INSULATED, DUCT JOINT COUPLING |
| FEAT | SPECIAL FEATURES | ITEM HAS A 2.58 IN RADIUS INTERIOR OPENING; MEASURES 6.00 IN HIGH AND 7.20 IN WIDE AT THE TOP AND BOTTOM; MADE FROM SILICONE RUBBER IMPREGNATED 2 PLY/MIN/ GLASS COTH PER MIL-C-9084 COATED WITH AN ALUMINIZED REFLECTIVE MATERIAL; INSULATION MATERIAL IS .19 IN THICK; COVER EXTERNAL SURFACE TEMP NOT TO EXCEED 450 DEG F WHEN USED WITH THE BLEED AIR DUCT SYSTEM AIR TEMP AT 800 DEG F AND A MAX AMBIENT AIR TEMP OF 350 DEG F WITH NATURAL CONVECTION; COVER IS REMOVABLE AND FLUID PROOF. |
| MATT | MATERIAL | LOCATION NOT OTHERWISE SPECIFIED RUBBER SILICONE CLASS Q AND GLASS FIBER |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 65M1020-111 | 25167 | HI-TEMP INSULATION INC DBA HI-TEMP INSULATION INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| DAA3285P003-111 | 1W025 | NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN COMPUTING SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-24 | [SPE4A626P00Y1](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660015725953) | INSULATION PIPE COV | ECI DEFENSE GROUP, INC. DIV ECI-GA | $1,314.51 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1660015725953&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1660015725953
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

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