Graphite Sheet & Graphite Gaskets — Flexible Graphite
Technical Specification
| Material: | Flexible (expanded) graphite, high carbon content |
|---|---|
| Types: | Plain (homogeneous) sheet, tanged stainless steel insert, flat metal foil insert, graphite tape |
| Typical Thickness: | Approx. 0.5 mm to 3 mm |
| Typical Sheet Sizes: | Approx. 1000 x 1000 mm and 1500 x 1500 mm, grade dependent |
| Temperature: | High-temperature service; the limit is lower in oxidising (air) conditions than in steam or inert media |
| Supply: | Full sheets, ring (IBC) and full-face gaskets cut to ASME, EN or drawing |
| Note: | Figures are typical; confirm exact grade, size and rating with our team |
Why Choose Graphite Gaskets?
- High temperature: handles hot steam, thermal oil and hydrocarbon service where rubber and fibre sheets fail
- Chemical resistance: resists most acids, alkalis and solvents (not strong oxidisers)
- Conformability: seals well on worn or slightly uneven flanges
- Low creep: holds bolt load under thermal cycling
- Fire-safe: graphite does not burn under normal service conditions
Graphite Sheet and Gasket Types
- Plain graphite sheet: for low-pressure, high-temperature flanges and cutting complex shapes
- Tanged (TSS) reinforced sheet: stainless steel insert for strength and easier handling on refinery and steam flanges
- Foil-reinforced sheet: flat metal insert for higher pressure
- Graphite gaskets: ring and full-face gaskets cut to size
- Graphite tape: braided, woven or expanded tape for valve and flange sealing
Graphite vs Non-Asbestos vs PTFE Gaskets
| Material | Strength | Choose when |
|---|---|---|
| Graphite | Highest temperature, fire-safe | Steam, thermal oil, hydrocarbons, high temperature |
| Non-asbestos (CNAF) | Economical, versatile | General water, oil and low-pressure steam flanges |
| PTFE (Teflon) | Widest chemical resistance | Aggressive chemicals, high purity, food and pharma |
See also: Non-Asbestos Gasket Sheet (CNAF), PTFE (Teflon) Gaskets, Gland Packing and Gaskets & Seal Materials.
Send us your sizes, quantities and service conditions (fluid, temperature, pressure) and our Al Khobar team will confirm availability, lead time and a quotation for delivery anywhere in Saudi Arabia and the GCC. Every order is supplied with a Material Test Certificate.
Frequently Asked Questions
Q1. What is graphite gasket sheet used for?
A. Cutting flange gaskets for high-temperature steam, thermal oil, hydrocarbon and many chemical services.
Q2. What is tanged graphite sheet?
A. Graphite sheet with a perforated (tanged) stainless steel insert that mechanically locks the graphite layers, giving more strength and easier handling.
Q3. Is graphite suitable for oxidising chemicals?
A. No. Strong oxidising agents attack graphite. Use PTFE gaskets for strong oxidisers.
Q4. Can you cut graphite gaskets to size?
A. Yes. We supply ring and full-face graphite gaskets cut to ASME, EN or your drawing.
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