Varglas 240 Info
A PDF file that contains all the specs for Varglas 240 Silicone Rubber Sleeving is available for download by clicking on the link below.
Varglas 240 Silcone Rubber Sleeving Spec Sheet
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Varflex Products
Varflex Corporation
512 W. Court Street
Rome, NY USA 13440
Phone: 315-336-4400
Fax: 315-336-0005
EMail: sales
varflex.com
Using our own "balanced" yarns, we then braid our sleeving into the various sized ID's available, followed by a proprietary heat treating process.
Varflex is the only manufacturer that offers Class 240 Silicone Sleeving in two colors; Black & Iron Oxide
Varflex's proprietary coating procedure creates a permanent bond between coating and sleeving earnig our Varglas 240 sleeving a QPL listing and exceeds UL 1441, Nema TF-1, type 5 & ASTM-D372 standards
Description
Varglas 240 Silicone Rubber Sleeving is produced by coating braided fiberglass with a specially formulated, proprietary silicone rubber that exhibits exceptional high-temperature properties. In addition to its flexibility,toughness and abrasion resistance, Varglas 240 Silicone Rubber provides superior thermal protection and flame resistance with a higher dielectric capability at less weight than previously available. Its ability to meet a Class 240°C rating, combined with a brittleness temperature of -80°C, makes it an ideal choice for applications that require outstanding physical and electrical insulation properties throughout a wide operating temperature range.
Specifications
Varglas 240 Silicone Rubber Sleeving conforms to, and is listed on the Qualified Products List (QPL) for, MIL-l-3190/9, latest revision (Grade A); and exceeds the requirements of UL 1441, Table 19.8; NEMA TF-1, Type 5; and ASTM-D372. Under the Component Program of Underwriters Laboratories, Grade A Varglas 240 Silicone Rubber is recognized for 240°C, 600 volt service and complies with VW-1 flammability requirements under UL File #E63450. CSA International certifies the use of Grade A for 240°C, 600 volt service and flammability requirements under CSA File #LR58486 VW-1/FT1.
Applications
Varglas 240 Silicone Rubber Sleeving is suitable for industrial applications such as motors, generators, transformers and engines where superior dielectric protection at elevated temperatures of 240°C is critical. In addition to automotive engines, Varglas 240 Silicone Rubber’s flame resistance and wideoperating temperature range make it particularly well suited for aircraft engines and other aerospace applications where it satisfies electrical and thermal barrier requirements while providingthe added benefit of lighter weight.
Sizes
AWG #24 through 2” l.D. Other sizes subject to inquiry.
Standard Color
Red oxide and black only.
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.
| Property | Procedure | Performance | |
| Physical | |||
|---|---|---|---|
| Tensile Strength, Coating | ASTM-D412 | 1600 psi | |
| Ultimate Elongation, Coating | ASTM-D412 | 800% @ 20°C | |
| Hardness, Coating | ASTM-D2240 | 54 (Durometer, Shore A) | |
| Flexibility and toughness, Coating | UL 1441 | Passes (Penetration Test) | |
| Chemical | |||
| Oil and Solvent Resistance | MIL-l-3190/9 | Passes | |
| Water Vapor Resistance | MIL-l-3190/9 | Passes | |
| Resistance to Acids and Alkalies | –– | Excellent | |
| Resistance to the Elements | –– | Unaffected by sunlight and weather | |
| Compatibility | UL 1446 | Good. Compatible with most potting compounds and varnishes |
|
| Electrical | |||
| Grade A | NEMA TF-1 | 8000v min. avg., 6000v min. indiv. | |
| Grade A | NEMA TF-1 | 80% of Original Value. | |
| Hydrolytic Stability after 336 hrs. @ 70°C over Constant Water Reflux |
MIL-l-3190/9 | Passes. 7000v min. avg. with no disintegration, reversion or cracks. (Spec. requires 5000v.) |
|
| Thermal | |||
| Thermal Endurance | MIL-l-3190/9 UL 1441 |
Class 240°C (S) | |
| Brittleness Temperature | ASTM-D350 | -80°C | |
| UL 1441 | Passes (VW-1) | ||
| ASTM-D350, Method A | Passes | ||
| NEMA TF-1 | Passes | ||
| MIL-I-3190/9 Method A | Passes | ||
| Note: | |||