Product Details | THERMAL INSULATION SLEEVING

5640-00-641-2736 A rigid or flexible item composed of one or more materials, having uniform inside and outside diameters in the entire length. It may be furnished in segments or split-round or full-round sections, composed of one or more layers. It is specifically designed to cover pipe, tubing, and like surfaces, to restrict the transfer of heat from the high temperature surface to the low temperature surface. It may also include protective coatings, jackets, attaching cement, attaching bands, and/or accessories, (excluding prefabricated components used in aircraft applications). Excludes INSULATION PIPE COVERING, THERMAL, AIRCRAFT.

Part Alternates: HHI557, 5640-00-641-2736, 00-641-2736, 5640006412736, 006412736

Construction and Building Materials | Wallboard, Building Paper, and Thermal Insulation Materials

Supply Group (FSG) NSN Assign. NIIN
56 01 JAN 1963 00-641-2736

Cross Reference | NSN 5640-00-641-2736

Part Number Cage Code Manufacturer
HHI557 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5640-00-641-2736

Characteristic Specifications
FLEXIBILITY RIGID
LAYER QUANTITY 1
MATERIAL CORK
FABRICATION METHOD COMPRESSED
MATERIAL DENSITY 7.0 POUNDS PER CUBIC FOOT MINIMUM AND 10.0 POUNDS PER CUBIC FOOT MAXIMUM
FLAMMABILITY RATING NOT RATED
SURFACE TREATMENT PAINT, ASPHALT
OUTER COVERING ENVIRONMENTAL PROTECTION FIRE RETARDANT AND VAPOR BARRIER
TEMP RATING 1.7 DEG CELSIUS MINIMUM AND 65.6 DEG CELSIUS MAXIMUM
INSULATION THICKNESS 1.250 INCHES MINIMUM
INSIDE DIAMETER 2.875 INCHES NOMINAL
LENGTH 35.900 INCHES MINIMUM AND 36.100 INCHES MAXIMUM
DESIGN FORM SPLIT ROUND
NONDEFINITIVE SPEC/STD DATA 1 CLASS
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE HHI557

Restrictions/Controls & Freight Information | NSN 5640-00-641-2736

Category Code Description
Hazardous Material Indicator CodePThere is no information in the HMIS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information