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Expanded PTFE Valve Stem Packing
Expanded PTFE Valve Stem Packing is made from 100% white pure virgin PTFE resin. It is a white, soft and round product. In possession of the characteristics of high tensile strength, self-lubrication, low coefficient of friction and corrosion resistance, it can be widely used in valves, faucet stems, rotating shafts, reciprocating plungers, stuffing boxes and flanges etc.
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Product Description
• Easy installation,cheap cost.
• High temperature resistance, long service life.
• Ideal for valves, faucet stems, rotating shafts
• No pollution for fluid.
• Chemical corrosion resistance.
• Excellent flexibility,few cold flow deformation.
• Clean, from dust-free workshop.
Properties:
| Work Temperature | -268～280℃,Melt327℃ | ASTM D 4895 |
| Work Pressure | ≤8Mpa Liquid | JIS K 6891 |
| Work Medium |
Except molten metal, liquid and gas of fluorine Meet（FDA21 CFR177.1550) |
|
| Tensile Strength | ≤10 MPA | JIS K 6891 |
| Bolt Pressure | 8-20Mpa（3-25mmWidth） | |
| Density | 0．7~0.85g/cm3 | ASTM D 4895 |
| Elongation | ≥20% | |
| Compressibility | ≤40% | ASTM F-38 |
| Volatility | ≤1.0% | JIS K 6892 |
| Recovery | ≥16% | ASTM F-36 |
|
Creep Relaxation（ASTM F38） |
≤40% | |
| Hardness | 30-70HA | |
| PH | 0-14 | |
| Moisture Content | ≤0.01% | ASTM D 4895 |
| Hot Unstability | 10 | |
| Ave Granule Dia | 500um | ASTM D 4895 |
Specification:
Diameter from 1-20mm×L (design by you)
| Specification | Standard Length:5-100m/roll |
| Dia(mm) | Dia(mm) |
| 1 | 11 |
| 2 | 12 |
| 3 | 13 |
| 4 | 14 |
| 5 | 15 |
| 6 | 16 |
| 7 | 17 |
| 8 | 18 |
| 9 | 19 |
| 10 | 20 |
