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Product > Electrical > Wire & Cable > Magnet Wire > Single Formvar Round Magnet Wire > Product # MWRD40SF
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Single Formvar Round Magnet Wire

Formvar is a synthetic enamel composed of polyvinyl acetal and phenolic resins.Formvar’s hot oil resistance sets it apart from all other magnet wire insulations. The flexibility, adhesion and abrasion scrape resistance of Formvar film is excellent. Its electrical properties are very good and it is resistant to common solvents. While Formvar has been replaced in many applications, Formvar continues to be the recommended film insulation most commonly used in oil-filled transformers.Typical ApplicationsOil-filled transformersMotorsRandom wound coilsSolenoids

Product #: MWRD40SF

Specifications

UL Listing UL Recognized Class 105 Product
Mil-Spec No. MW 15-C/A
AWG Size 40
Min. Bare Wire Diameter 0.0030 in
0.076 mm
Nom. Bare Wire Diameter 0.0031 in
0.079 mm
Max. Bare Wire Diameter 0.0032 in
0.081 mm
Min. Increase in Diameter Due to Film Coating 0.0003 in
0.008 mm
Min. Overall Diameter of Film-Coated Wire 0.0032 in
0.081 mm
Max. Overall Diameter of Film-Coated Wire 0.0037 in
0.094 mm

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