PDF Data Sheet
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Varglas 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
Description
Varglas Silicone Rubber Sleeving is produced by coating braided fiberglass with a high-performance silicone rubber that is extremely flexible and exhibits unusual toughness and abrasion resistance. In addition to having a Class 200°C rating, its brittle point of -73°C also suggests its use in a wide range of applications requiring resistance to temperature extremes.
Specifications
Varglas Silicone Rubber Sleeving conforms to, and is listed on the Qualified Products List (QPL) for, MIL-l-3190/6, latest revision (Grade A); NEMA TF-1, Type 5; and ASTM-D372.Under the Component Program of Underwriters Laboratories, Grade A Varglas Silicone Rubber is recognized for 200°C, 600 volt service and complies with VW-1 flammability requirements under UL File #E63450. (VW-1 compliance of Grades B through C-3 is covered under UL File #E53690.) CSA International certifies the use of Grade A for 200°C, 600 volt service and flammability requirements under CSA File #LR58486 VW-1/FT1. Varglas Silicone Rubber is incorporated in systems work, per UL Safely Standard 1446, to facilitate product acceptance by UL.
Applications
Varglas Silicone Rubber Sleeving is used in appliances, motors and generators as well as in automotive, marine and aircraft electrical and electronic components such as transformers, coils, relays, etc. where a 200°C thermal rating is required. In addition to being well-suited as heavy duty insulation where subjected to high heat, such as in die-casting and plastic molding, Varglas Silicone Rubber Sleeving is also suitable for use in extremely low-temperature environments such as high altitude and aerospace applications.
Sizes
AWG #24 through 2” l.D. Other sizes subject to inquiry.
Standard Color
Natural and white. Other colors made to order.
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 | 1500 psi | |
| Ultimate Elongation, Coating | ASTM-D412 | 800% @ 20°C | |
| Hardness, Coating | ASTM-D2240 | 50 (Durometer) | |
| Flexibility and toughness, Coating | UL 1441 | Passes (Penetration Test) | |
| Chemical | |||
| Oil and Solvent Resistance | MIL-l-3190/9 | Passes (Excellent) | |
| Water Vapor Resistance | MIL-l-3190/9 | Passes (Good) | |
| 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 B | NEMA TF-1 | 4000v min. avg., 2500v min. indiv. | |
| Grade C-1 | NEMA TF-1 | 2500v min. avg., 1500v min. indiv. | |
| Grade C-2 | NEMA TF-1 | 1500v min. avg., 800v min. indiv. | |
| Grade C-3 | NEMA TF-1 | No voltage guarantee | |
| Grade A | NEMA TF-1 | 80% of Original Value. | |
| Hydrolytic Stability after 336 hrs. @ 70°C over Constant Water Reflux |
MIL-l-3190/6 | Passes. 5000v min. avg. | |
| Thermal | |||
| Thermal Endurance | MIL-l-3190/9 UL 1441 |
Class 200°C (S) | |
| Brittleness Temperature | ASTM-D350 | -73°C | |
| UL 1441 | Passes (VW-1) | ||
| ASTM-D350, Method B | Passes | ||
| NEMA TF-1 | Passes | ||
| MIL-I-3190/6 Method B | Passes | ||
| Note: | |||