Flame-test classification
Use the applicable approval record and test method to verify whether the requested product construction and range are covered.
ENGINEERING VERIFICATION GUIDE
UL VW-1 Fiberglass Sleeving Guide
VW-1 is a flame-test classification, not a generic product description. Verify the exact construction, size, coating system, test method and approval scope, then review it with the temperature, electrical and end-use requirements of the assembly.
WHAT VW-1 DOES AND DOES NOT CONFIRM
Keep flame performance separate from other selection criteria
Thermal performance
Review continuous temperature, peak exposure, aging conditions and the coating system independently of any flame-test request.
Electrical performance
Define voltage, dielectric test, wall build and the final insulation system. A VW-1 request alone does not establish electrical suitability.
DOCUMENT CONTROL
Verify the exact product, not a general material name
Fiberglass braid, coating family, wall build, nominal inner diameter, color and manufacturing configuration can affect the documentation that applies to a supplied sleeving. Match the customer requirement to the requested production construction and confirm the current supporting file before quoting an approval claim.
For an end product, approval of a sleeving material does not replace the evaluation required for the complete assembly. Keep the product record, test conditions and installation route available for project review.
Read the specification guideRFQ AND VERIFICATION CHECKLIST
Information to confirm before sample or production approval
Confirm certification scope and final end-use compliance with the applicable standard and current project documentation. Do not rely on a generic material description alone.
TECHNICAL VIDEO LIBRARY
Review material and test evidence with the project file
The WCW technical video library provides application context. Match any product shown in a video to the exact construction and documentation required for the current project.
View technical videosRELATED GUIDES
Continue the technical review
Fiberglass sleeving specifications
Build a reviewable specification around dimensions, coating, temperature, voltage and validation needs.
Read the specification guideTemperature rating
Compare continuous temperature, peak exposure and coating chemistry before selecting a grade.
Read the temperature guideVoltage selection
Review voltage with wall build, dimensions and the complete insulation system.
Read the voltage guideMotor lead insulation
Account for motor lead heat, vibration, bending and installation conditions.
Read the motor guidePROJECT REVIEW
Send the construction and approval requirement
Include your target sleeving, size, temperature, voltage, end-use standard and required documents. WCW can review the material direction, sample route and available technical information for the project.