Pure Graphite Flange Gaskets
A pure graphite flange gasket is a flat gasket made only of expanded graphite, with no metal reinforcement. Its soft structure conforms well to the flange face even at low bolt load and keeps its seal at high temperature.
It is used on steam and high-temperature water lines, heat exchanger and boiler flanges and wherever a gasket resistant to many chemicals is needed. As it is fragile it must be handled carefully; inner-ring or wire-reinforced types are preferred where more mechanical strength is needed.
Main Applications
- Steam and high-temperature water lines
- Heat exchanger and boiler flanges
- Chemical process lines
- Flanges with low bolt load
- Glass or enamel-lined equipment flanges
Technical Data
| Material | Expanded graphite (unreinforced) |
|---|---|
| Type | Flat gasket |
| Thickness | By model |
| Dimension standard | EN 1514-1 |
| Compatible flanges | EN 1092-1 (DIN) and ASME B16.5 |
| Temperature and pressure | By grade, per manufacturer datasheet |
| Medium | Steam, high-temperature water, many chemicals |
Material Options
| Part | Pure graphite gasket |
|---|---|
| Base material | Expanded graphite |
| Reinforcement | None |
| Ring | None |
| Thickness | By model |
Which material? A pure graphite gasket is fragile and not reusable; renew it each time the joint is opened. On high-pressure lines consider an inner-ring pure graphite or spiral wound gasket.
Advantages
Excellent Conformity
- Soft face, low bolt load
High Temperature
- Steam and hot water
Chemical Resistance
- Suits many media
Pure Structure
- Unreinforced graphite
Construction and Design Features
- Single expanded graphite sheet
- Bore matched to flange inside diameter
- Outer diameter inside the bolt circle
- Flat gasket form
Write the flange size, temperature and medium; we will confirm the pure graphite gasket or its inner-ring alternative.
How to Choose?
- Define the mediumState steam, hot water or chemical.
- Assess the pressureChoose the inner-ring type at high pressure.
- Check the flange faceUse pure graphite’s conformity on sensitive faces.
- Plan sparesAdd gaskets to renew at each opening.
Complementary Products
Why ORFA?
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Details →Get a quote for your project
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