Leading provider
of high-performance wire,
cable and tubing since 1959
Toll Free:(800) 822-WIRE
Local: (661) 257-2400
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 Applications
  • Oil-filled transformers
  • Motors
  • Random wound coils
  • Solenoids
  • Guitar Pickups




For Use in Guitar Pickups

Formvar serves as an excellent choice of winding wire for pickup manufacturing companies and is chosen for it's resistance to common solvents (including sweat and other liquids that can find its way into a guitar's pickup). Heavy Formvar is used where top end brightness and note definition are desired, due to fewer windings than with thinner wire with more windings.

1 - 25 of 41 | Results Per Page | View | Unit of Measure
1 2 

Item #

AWG Size

Nom. Bare Wire Diameter

Min. Increase in Diameter Due to Film Coating

Max. Overall Diameter of Film-Coated Wire

MWRD4HF N/A 4 N/A 0.2043 in5.189 mm N/A 0.0037 in0.094 mm N/A 0.2098 in5.329 mm
MWRD6HF N/A 6 N/A 0.1620 in4.115 mm N/A 0.0035 in0.089 mm N/A 0.1671 in4.244 mm
MWRD9HF N/A 9 N/A 0.1144 in2.906 mm N/A 0.0032 in0.081 mm N/A 0.1189 in3.020 mm
MWRD11HF N/A 11 N/A 0.0907 in2.304 mm N/A 0.0030 in0.076 mm N/A 0.0948 in2.408 mm
MWRD12HF N/A 12 N/A 0.0808 in2.052 mm N/A 0.0029 in0.074 mm N/A 0.0847 in2.151 mm
MWRD13HF N/A 13 N/A 0.0720 in1.829 mm N/A 0.0028 in0.071 mm N/A 0.0757 in1.923 mm
MWRD14HF N/A 14 N/A 0.0641 in1.628 mm N/A 0.0032 in0.081 mm N/A 0.0682 in1.732 mm
MWRD15HF N/A 15 N/A 0.0571 in1.450 mm N/A 0.0030 in0.076 mm N/A 0.0609 in1.547 mm
MWRD16HF N/A 16 N/A 0.0508 in1.290 mm N/A 0.0029 in0.074 mm N/A 0.0545 in1.384 mm
MWRD17HF N/A 17 N/A 0.0453 in1.151 mm N/A 0.0028 in0.071 mm N/A 0.0488 in1.240 mm
MWRD18HF N/A 18 N/A 0.0403 in1.024 mm N/A 0.0026 in0.066 mm N/A 0.0437 in1.110 mm
MWRD19HF N/A 19 N/A 0.0359 in0.912 mm N/A 0.0025 in0.064 mm N/A 0.0391 in0.993 mm
MWRD20HF N/A 20 N/A 0.0320 in0.813 mm N/A 0.0023 in0.058 mm N/A 0.0351 in0.892 mm
MWRD21HF N/A 21 N/A 0.0285 in0.724 mm N/A 0.0022 in0.056 mm N/A 0.0314 in0.798 mm
MWRD22HF N/A 22 N/A 0.0253 in0.643 mm N/A 0.0021 in0.053 mm N/A 0.0281 in0.714 mm
MWRD23HF N/A 23 N/A 0.0226 in0.574 mm N/A 0.0020 in0.051 mm N/A 0.0253 in0.643 mm
MWRD24HF N/A 24 N/A 0.0201 in0.511 mm N/A 0.0019 in0.048 mm N/A 0.0227 in0.577 mm
MWRD25HF N/A 25 N/A 0.0179 in0.455 mm N/A 0.0018 in0.046 mm N/A 0.0203 in0.516 mm
MWRD26HF N/A 26 N/A 0.0159 in0.404 mm N/A 0.0017 in0.043 mm N/A 0.0182 in0.462 mm
MWRD27HF N/A 27 N/A 0.0142 in0.361 mm N/A 0.0016 in0.041 mm N/A 0.0164 in0.417 mm
MWRD28HF N/A 28 N/A 0.0126 in0.320 mm N/A 0.0016 in0.041 mm N/A 0.0147 in0.373 mm
MWRD29HF N/A 29 N/A 0.0113 in0.287 mm N/A 0.0015 in0.038 mm N/A 0.0133 in0.338 mm
MWRD30HF N/A 30 N/A 0.0100 in0.254 mm N/A 0.0014 in0.036 mm N/A 0.0119 in0.302 mm
MWRD31HF N/A 31 N/A 0.0089 in0.226 mm N/A 0.0013 in0.033 mm N/A 0.0108 in0.274 mm
MWRD32HF N/A 32 N/A 0.0080 in0.203 mm N/A 0.0012 in0.030 mm N/A 0.0098 in0.249 mm
1 - 25 of 41 | Results Per Page | View | Unit of Measure
1 2