Tufnol SRBGF Materials
Laminated Glass Fabric Grades
(Also known as Synthetic Resin Bonded Glass Fabric, or SRBGF)
Resin-bonded glass fabric grades
Tufnol laminated glass fabric grades are used in various high-performance applications due to their strength, rigidity, dimensional stability, and excellent electrical insulation.
Key uses of synthetic resin-bonded glass fabric materials include electrical insulation in high-temperature environments like aerospace and industrial machinery, components in high-frequency electrical devices, and structural insulation in electronic equipment.
They are particularly valued in environments where fire resistance and low smoke output are crucial, such as underground facilities and passenger transport vehicles. These materials are not suitable for wear or bearing applications due to their abrasive nature.
See below for a full range of laminated glass fabric grades.
Tufnol Grades 10G/40, 10G/41, 10G/42 and 10G/44
10G/40, 10G/41, 10G/42 & 10G/44
Tufnol Grade 10G/24
Tufnol Grade 10G/24
Tufnol Grade 10G/50
Tufnol Grade 10G/50
Tufnol Grade 6G/92
Tufnol Grade 6G/92
Tufnol Rolled Laminated Glass Fabric Tubes
RLG 1 & 3
FAQs
Glass Fabric Laminate FAQs
High-temperature electrical insulation calls for woven glass fabric laminates (SRBGF), which keep their dielectric strength and resistance to surface tracking at elevated temperatures. For the highest temperatures, the Tufnol range includes the silicone glass grade 10G/50 and the polyimide glass grade 6G/92, while the epoxy glass grades combine high strength with good electrical insulation. Check the rated temperature limit for each grade on the Tufnol working temperatures guide.
For rigid electrical insulation supplied as sheet, the main choices are phenolic paper (SRBP) for general switchgear and busbar insulation, cotton fabric laminates (SRBF) where mechanical strength is also needed, and woven glass fabric laminates (SRBGF) for the highest voltage and temperature duty. All are cut to size and machined to close tolerances. Kite Brand, the most widely used Tufnol phenolic sheet grade for general electrical insulation, is in the paper laminates (SRBP) range.
Electrical insulation is material used to prevent unwanted flow of current between conductors or to earth, keeping equipment safe and reliable. In heavy electrical equipment that job is done by rigid insulating components – busbar supports, coil formers, slot wedges, washers and switchgear panels – rather than flexible tape. Tufnol makes these from phenolic, cotton fabric and glass fabric laminates. Browse the full range of Tufnol materials.
Tufnol is made from layers of reinforcement – paper, woven cotton fabric or woven glass cloth – impregnated with a thermosetting resin, usually phenolic or epoxy, then stacked and cured under heat and high pressure into a solid sheet, rod or tube. The reinforcement and resin chosen set the grade’s properties, from economical electrical insulation to tough mechanical parts. Explore the cotton fabric grades on the fabric laminates page.
Tufnol laminates are used for electrical insulation, gears, cams, bearings, washers, structural parts and machined components across electrical, aerospace, marine, rail, oil and gas and general engineering. The grade is matched to the job – phenolic paper for switchgear insulation, cotton fabric for hard-wearing mechanical parts, glass epoxy for high strength and temperature.