Glass Manufacturing
Inert graphite components for glass melting, fibre drawing and specialty glass forming.
1650°C
Max service temp
Non-wetting
vs. molten glass
Custom
Bushing profiles
Graphite solutions for Glass Manufacturing
Graphite's non-wetting behaviour with molten glass, combined with its thermal stability up to 1650°C and machinability to tight tolerances, makes it the preferred material for glass fibre drawing bushings, plungers, feeder components, and forming tools. Unlike metals, graphite does not contaminate the glass melt and requires no lubricant.
Expo supplies precision-machined graphite components for E-glass, borosilicate, and specialty glass manufacturing — including bushing blanks, plunger assemblies, tweel plates, and annealing lehr rollers — with anti-oxidation coating available for extended service life.
Why Expo for Glass Manufacturing
Non-wetting graphite grades for molten glass contact
Anti-oxidation coating service for extended component life
Custom bushing and plunger profiles machined to drawing
Experienced with E-glass, borosilicate, and float glass processes
Where we supply
Key applications in Glass Manufacturing
Fibre Drawing Bushings
Precision graphite bushing blanks for E-glass, ECR, and AR glass fibre drawing — machined to customer tip plate specifications.
Plungers & Feeder Components
Graphite plungers, tubes, and feeder bowl components for container glass and pressed glass forming machines.
Tweel Plates
Graphite tweel plates for controlling glass flow rate from tank to feeder in container glass operations.
Annealing Lehr Rollers
Carbon-graphite rollers and sleeve components for annealing lehr conveyors in flat glass production.
Optical Glass Forming
High-purity graphite mould inserts for precision pressing of optical lenses and aspherical elements.
Insulation Components
Graphite insulation boards and shields for glass furnace crown and side wall thermal management.
Technical reference
Typical specifications
| Application | E-glass fibre drawing; container glass forming |
| Max service temperature | 1650°C in inert atmosphere |
| Key property | Non-wetting to most molten glass compositions |
| Recommended grade | Chemical-purity isostatic graphite |
| Anti-oxidation coating | Available — extends service life 2–3× |
| Machining tolerance | ±0.05 mm on bushing features |
| Surface finish | Ra 0.8 μm on glass-contact surfaces |
| Lead time | 2–4 weeks depending on complexity |
Material grades
Recommended graphite grades
Grades we supply for this application
ISO-88
Chemical-purity isostatic — good resistance to glass corrosion
TTK-8
Premium isostatic — for demanding optical and specialty glass
Anti-ox coated
Any grade with anti-oxidation coating for extended life
Need grade guidance?
Our technical team will recommend the right grade for your operating conditions — at no charge.
Ready to source graphite for Glass Manufacturing?
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