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Varglas 240 Silicone Rubber Coated Sleevings
Brand: Varflex CorporationVarglas 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
Brand
Tensile Strength, Coating
- ASTM-D412
- 1600 psi
Ultimate Elongation, Coating
- ASTM-D412
- 800 % at 20° C
Hardness, Coating
- ASTM-D2240
- 54 (Durometer, Shore A)
Flexibility and Toughness, Coating
- Excellent
Oil and Solvent Resistance
- Good
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.
Dielectric Strength After 48/23/50
- Grade A
- NEMA TF - 1
- 8000 V minimum average, 6000 V minimum individual
Dielectric Strength After 96/23/96
- Grade A ; NEMA TF - 1; 80 % of Original Value
- Hydrolytic Stability after 336 hours at 70° C over Constant Water Reflux ; MIL-I-3190/9 ; 5000 Volts Minimum Average
Thermal Endurance
- MIL-l-3190/9 & UL 1441
- Class 240° C (S)
Brittleness Temperature
- ASTM-D350
- -80° C
Flame Resistance
- UL 1441 - Passes (VW-1)
- ASTM-D350, Method A - Passes
- NEMA TF-1 - Passes
- MIL-l-3190/9, Method B - Passes
Pushback
- MIL-l-3190/9
- No cracks or ruptures. 6000 volts min. avg. breakdown strength
- Motors
- Generators
- Transformers
- Engines where Superior Dielectric Protection at Elevated Temperatures of 240°C is Critical
- Aircraft Engines
- Other Aerospace Applications where it Satisfies Electrical and Thermal Barrier Requirements wWhile Providing the Added Benefit of Lighter Weight