PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTRA 701Insulation Sleeving,electrical

Essex Group Inc Suflex/iwp Div · NSN 5970-00-221-5309 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-221-5309 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-221-5309. Primary manufacturer part number: ASTRA 701.
Features
  • Insulation Sleeving,electrical — FSC 5970
  • Minimum Tensile Strength: 1800 POUNDS PER SQUARE INCH LBS
  • Color: CLEAR
  • Temp Rating: -30.0 CELSIUS AND 75.0 CELSIUS DEGC
  • Environmental Protection: FLAME RESISTANT AND MILDEW RESISTANT AND OIL RESISTANT
  • Flexibility: FLEXIBLE
  • Style Designator: NONSHRINKABLE
  • Departure From Cited Document: AS MOD BY COLOR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-00-221-5309, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Essex Group Inc Suflex/iwp Div. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-221-5309
Primary Part NumberASTRA 701
Item NameInsulation Sleeving,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerEssex Group Inc Suflex/iwp Div
StatusACTIVE
Minimum Tensile Strength1800 POUNDS PER SQUARE INCH LBS
ColorCLEAR
Temp Rating-30.0 CELSIUS AND 75.0 CELSIUS DEGC
Environmental ProtectionFLAME RESISTANT AND MILDEW RESISTANT AND OIL RESISTANT
FlexibilityFLEXIBLE
Style DesignatorNONSHRINKABLE
Departure From Cited DocumentAS MOD BY COLOR
Nondefinitive Spec/std Data1 CATEGORY AND I CLASS AND U FORM AND A GRADE AND 0.320 IN. SIZE AND UB SUBFORM AND F TYPE IN
Dielectric Material Voltage Rating Per Unit Thickness700.0 VOLTS PER MIL /0.001 INCH/ IN
Reliability IndicatorNOT ESTABLISHED
Wall Thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
Inside Diameter0.315 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5970-00-068-12928034664-5 INTERCHANGEABLE
Insulation Sleeving,electrical
Us Army Aviation and Missile Command
5970-00-068-12948034664-4 INTERCHANGEABLE
Insulation Sleeving,electrical
Us Army Aviation and Missile Command
5970-00-221-5297 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-221-5298 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-221-5299FLEXITE STANDARD UB INTERCHANGEABLE
Insulation Sleeving,electrical
Markel Corp.
5970-00-221-5301 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-221-5302 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-221-5303 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-222-4778 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-00-222-4779 INTERCHANGEABLE
Insulation Sleeving,electrical
Cross-Reference Index
Part NumberManufacturer
ASTRA 701 Essex Group Inc Suflex/iwp Div (USA)
FLEXITE STANDARD UB Markel Corp. (USA)
3002 3m Co Admininistrative Electronic & Communications (USA)
NATVAR 261 High Voltage Engineering Corp Natvar Co Div (USA)
GLITEX 120 Nalge Co Div of Sybron Corp (USA)
MIL-I-631 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HYFLEX TRANSFLEX 3m Co Admininistrative Electronic & Communications (USA)
HYFLEX TRANSFLEX Minnesota Mining and Mfg Co 3m Company (USA)
3002 Minnesota Mining and Mfg Co 3m Company (USA)
SYNTHOLVAR Varflex Corporation Dba Varflex Corp (USA)
ITCO 919 Insultab Inc Div Pexco Athol (USA)
Related Parts
5970-00-068-1292INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
8034664-5
5970-00-068-1294INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
8034664-4
5970-00-221-5297INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-221-5298INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-221-5299INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
FLEXITE STANDARD UB
5970-00-221-5301INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-221-5302INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-221-5303INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-222-4778INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-222-4779INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-222-4780INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-00-222-4782INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL

Frequently Asked Questions

What is NSN 5970-00-221-5309?

NSN 5970-00-221-5309 is a Insulation Sleeving,electrical, manufactured by Essex Group Inc Suflex/iwp Div, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-221-5309?

NSN 5970-00-221-5309 has 11 cross-referenced part numbers: ASTRA 701 (Essex Group Inc Suflex/iwp Div), FLEXITE STANDARD UB (Markel Corp.), 3002 (3m Co Admininistrative Electronic & Communications), NATVAR 261 (High Voltage Engineering Corp Natvar Co Div), GLITEX 120 (Nalge Co Div of Sybron Corp) and 6 more.

What NSN replaces 5970-00-221-5309?

There are 12 known substitutes for 5970-00-221-5309: 5970-00-068-1292, 5970-00-068-1294, 5970-00-221-5297 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTRA 701?

Key specifications for ASTRA 701: Minimum Tensile Strength: 1800 POUNDS PER SQUARE INCH LBS; Color: CLEAR; Temp Rating: -30.0 CELSIUS AND 75.0 CELSIUS DEGC; Environmental Protection: FLAME RESISTANT AND MILDEW RESISTANT AND OIL RESISTANT. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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