PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ER-41Insulating Varnish,electrical

John C. Dolph Company · NSN 5970-00-076-8988 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-076-8988 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-076-8988. Primary manufacturer part number: ER-41.
Features
  • Insulating Varnish,electrical — FSC 5970
  • Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness: 2000.0
  • Color: RED
  • Drying Method: AIR
  • Unit Package Quantity: 1
  • Unit Package Type: CAN,AEROSOL
  • 3 verified cross-references
  • Primary manufacturer: John C. Dolph Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulating Varnish,electrical, cataloged under National Stock Number 5970-00-076-8988, 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 John C. Dolph Company. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-076-8988
Primary Part NumberER-41
Item NameInsulating Varnish,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerJohn C. Dolph Company
StatusACTIVE
Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness2000.0
ColorRED
Drying MethodAIR
Unit Package Quantity1
Unit Package TypeCAN,AEROSOL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3455-00-250-0770 INTERCHANGEABLE
Cutter,milling,end
4730-00-727-9627 INTERCHANGEABLE
Clamp,hose
Cross-Reference Index
Part NumberManufacturer
ER-7 John C. Dolph Company (USA)
9056163 Us Army Aviation and Missile Command (USA)
ER-41 PRIMARY John C. Dolph Company (USA)
Related Parts
3455-00-250-0770INTERCHANGEABLE
CUTTER,MILLING,END
4730-00-727-9627INTERCHANGEABLE
CLAMP,HOSE

Frequently Asked Questions

What is NSN 5970-00-076-8988?

NSN 5970-00-076-8988 is a Insulating Varnish,electrical, manufactured by John C. Dolph Company, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-076-8988?

NSN 5970-00-076-8988 has 3 cross-referenced part numbers: ER-7 (John C. Dolph Company), 9056163 (Us Army Aviation and Missile Command), ER-41 (John C. Dolph Company).

What NSN replaces 5970-00-076-8988?

There are 2 known substitutes for 5970-00-076-8988: 3455-00-250-0770, 4730-00-727-9627. Verify interchangeability with system specifications before substitution.

What are the specifications of ER-41?

Key specifications for ER-41: Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness: 2000.0; Color: RED; Special Features: 1200 VOLTS PER MIL DIELECTRIC STRENGTH WET; 250 DEG F OPERATIING TEMPERATURE DEGF; Drying Method: AIR. 6 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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