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Varglas A397 & 343 Acrylic Sleeving: List

Varglas Acrylic Sleeving

Varglas A397 and 343 Acrylic sleeving is designed to insulate and fit over wires and cables used in electronic or mechanical apparatuses. Varglas A397 and 343 Acrylic sleevings are designed for durability over long periods in a 155°C range without loss of any electrical or physical properties, designed to insulate up to 7000 volts. Both A397 and 343 are resistant to most acids, organic solvents, oils, water and exhibit fair resistance to alkalies. They are compatible with modified polyester, acrylic, epoxy, phenolic and formvar wire enamels.

Varflex Corporation coated fiberglass sleeving

Class 155 F
(-25°C to +155°C) (-13°F to +311°F)

Dielectric Strength Grade(s): A-1 B-1 C-1 C-2 C-3

Varglas A397 & 343 Acrylic Sleeving: Image


Varglas A397 and 343 Acrylic sleevings conform to, and are listed on the Qualified Products List for, MIL-l-3190/3, latest revision (Grade A); NEMA TF-l, Type 6; and ASTM- D372. 


Under the Component Program of Underwriters Laboratories, both Varglas A397 and 343 Acrylic sleevings in Grade A are recognized for 155°C, 600 volt service under UL File #E63450. CSA International certifies the use of both sleevings in Grade A for 155°C, 6000 volt service under CSA File #LR58486. They are recognized in systems work, per UL Safety Standard 1446, to facilitate product acceptance by UL. Additionally, Grade C-3 Acrylic complies with UL’s VW-l flammability requirements under UL File #E53690.


Varglas A397 and 343 Acrylic sleevings are used to insulate leads and crossovers in fractional and integral horsepower motors. They are used in dry and oil-filled transformers, generators and other moisture-sensitive equipment, as well as in home appliances, lighting fixtures, instrument circuits and controls. Additional uses include switchgear, breaker panels, welding equipment and other commercial apparatus subjected to continuous operating temperatures of 155°C, particularly those requiring insulation system compatibility.


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

Standard Colors

Available in over 10 Colors plus Fluorescents

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.

Varglas A397 & 343 Acrylic Sleeving: List
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