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Varflo Sleeving

Varflo sleevings are braided fiberglass coated with a modified polyvinyl chloride resin. Superior plasticizers, along with the best flame retardants and fungicides, make Varflo an outstanding Class 130°C sleeving. It has excellent flexibility and resistance to oils, solvents and moisture. Varflo has extended shelf life and will not lose dielectric strength when subjected to severe twisting.

Class 130 B 
(-34°C to +130°C) (-29°F to +266°F)

Dielectric Strength Grade(s): A-1 B-1 C-1

Varflex's Varflo electrical insulated sleeving for added protection and solutions to insulate leads in motors, transformers, generators
Varflo Sleeving: List


Varflo sleevings conforms to, and is listed on the Qualified Products List for, MIL-l-3190/2, latest revision (Grade A); NEMA TF-1, Type 3; and ASTM-D372.

Under the Component Program of Underwriters Laboratories, Grade A Varflo sleevings are recognized for 105°C, 600 volt service and complies with VW-1 flammability requirements under UL File #E63450. (VW-1 compliance of Grades B through C-1 is covered under UL File #E53690). CSA International certifies the use of Grade A for 105°C, 600 volt service and flammability requirements under CSA File #LR58486 VW-1. Varflo is incorporated in systems work, per UL Standard 1446, to facilitate product acceptance by UL.


Varflo sleevings are used to insulate leads in motors, transformers, generators and similar apparatus. In relation to its excellent flexibility, good electrical properties and resistance to soldering temperatures, Varflo is also used in radios, TVs, computers, as well as other electronic circuitry in measuring instruments. Varflo is used on both original equipment and aftermarket automotive industry applications primarily because of its toughness, flexibility and dielectric strength. Varflo can be used on regulators, starters, alternators, and more!


AWG #24 through 2” l.D. Other sizes subject to inquiry.

Standard Colors

Yellow and black. Other colors subject to inquiry. 

Standard Packaging

Coils, spools or 36” lengths at manufacturer’s option, unless otherwise specified. There is no cutting charge for 36” lengths, but lengths other than 36” are subject to cutting charges.
Sizes over 1” l.D. are generally supplied in 36” lengths.

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