Non-Asbestos Jointing Sheets
Product Description
Product Detail
Non-Asbestos Jointing Sheets – Compressed Fibre Sheet for Water, Steam & Pipeline Flange Sealing | Model KNXB200
Kaxite's Non-Asbestos Jointing Sheets are produced from selected non-asbestos heat-resisting fibre, heat-resisting filler and a special rubber compound, formed under heat and compression into a dense, uniform sheet. The result is a safe, asbestos-free replacement for traditional asbestos rubber sheet — suitable for sealing water, steam, gas and general industrial pipeline flanges. Model KNXB200 is the standard grade for 200°C service; higher grades KNXB300, KNXB350 and the KNNY oil-resistant series are available in the same sheet size range.
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WORKING TEMPERATURE
200°C
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WORKING PRESSURE
1.5 MPa
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THICKNESS
0.5–6.0 mm
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MAX SHEET SIZE
4100×1500 mm
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Material & ConstructionNon-asbestos heat-resisting fibre + heat-resisting filler + special rubber compound, heat and compression molded into a homogeneous sheet. No asbestos content — safe for handling, cutting and installation. |
Service MediaWater, steam, gas, inert media and general industrial fluids. Oil-resistant grades (KNNY series) additionally handle petroleum-based oils and aviation fuels. |
Available Grades and Performance Data
| Item | KNXB200 | KNXB300 | KNXB350 | KNNY150 | KNNY250 | KNNY300 | KNNY350 |
| Tensile strength MPa | 5.0 | 7.0 | 11.0 | 8.0 | 10.0 | 12.0 | 15.0 |
| Aging coefficient | 0.9 | ||||||
| Density g/cm³ | 1.6 – 2.0 | 1.6 – 1.8 | |||||
| Compressibility % | 12 ± 7 | ||||||
| Rebound degree | 35 | 40 | 45 | 40 | 45 | 50 | 50 |
| Pliability | No crack | ||||||
| Stress-relaxation | 45 | 45 | 45 | 40 | 40 | 30 | 30 |
| Oil sealing (15–30°C, No.75 aviation gasoline, 30 min) | — | — | — |
10 MPa no leak |
12 MPa no leak |
15 MPa no leak |
16 MPa no leak |
| 150°C, No.20 aviation oil, 5h — tensile strength reducing % | — | 40 | 30 | 25 | 25 | ||
| Thickness increasing % (same condition) | — | 5–20 | 5–20 | 5–18 | 5–18 | ||
| Appearance change | No bubble | ||||||
All values are typical test data. Grade selection depends on your service temperature, pressure and fluid medium — contact our technical team for a recommendation.
Standard Sheet Sizes
| 4100 × 1500 mm — thickness 0.5–6.0 mm | 2000 × 1500 mm — thickness 0.5–6.0 mm |
| 1500 × 1360 mm — thickness 0.5–6.0 mm | 3810 × 1270 mm — thickness 0.5–6.0 mm |
| 1270 × 1270 mm — thickness 0.5–6.0 mm | 1500 × 1500 mm — thickness 0.5–6.0 mm |
Other sizes are available on request or produced according to customer drawings. Packing is in wooden pallets of approximately 1000 kg net each, or 2000 kg net per pallet on request.
Why Choose Non-Asbestos Jointing Sheet
| Asbestos-free | Safe to handle, cut and install. No health risk associated with asbestos fibre exposure. |
| Stable under heat | Withstands continuous 200°C service for KNXB200; KNXB300 and KNXB350 cover higher temperature ranges. |
| Good compressibility | Compressibility 12 ± 7% ensures the sheet conforms to flange surface irregularities and seals reliably at low bolt load. |
| Easy fabrication | Can be cut, punched or die-cut into gaskets on site with standard workshop tools. |
Typical Applications
- Water and steam pipeline flange joints
- Pumps, valves and heat exchangers handling water, steam and inert media
- General industrial equipment sealing where asbestos is not permitted
- Oil-resistant grade (KNNY series) for petroleum-based oils and aviation fuels
- Replacement of corresponding asbestos rubber sheet models in existing installations
Related sheet products: Asbestos Sheets, Graphite Sheets, PTFE Sheets and Rubber Sheets.
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Request a Non-Asbestos Jointing Sheet Quotation
Tell us your grade, sheet size, thickness and quantity — our team replies within 24 hours with FOB pricing, lead time and a free sample offer.
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