Factory Cnc Parts Ball Valve Seals Pctfe Seat Rings Peek Ball Valve Seat
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- Supplier: Chengdu Shuanggao Industry Co. Ltd.
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Product Overview
Description
Factory Cnc Parts Ball Valve Seals Pctfe Seat Rings Peek Ball Valve Seat
About PTFE Material
PTFE material has excellent resistance for all chemical corrosion. Its friction coefficient is the lowest in plastics.Temperature changes do not affect its electrical insulation property. So PTFE often be called "plastic king". PTFE is suitable for making corrosion resistant parts, wear parts, seal, insulation parts and medical equipment parts.
Properties | Unit | PTFE |
Density | g/cm³ | 2.18 |
Damp-absorbing rate @23℃ 50RH | % | 0.05 |
Melting temperature | ℃ | 327 |
Thermal properties | ||
Heat conductivity 23℃ | W/(k.m) | 0.25 |
Coefficient of linear expansion 23~100℃ | 10-6 1/K | 120 |
Coefficient of linear expansion 23~150℃ | 10-6 1/K | 120 |
Coefficient of linear expansion >150℃ | 10-6 1/K | 120 |
Distortion temperature 1.8MPa | ℃ | 55 |
The highest short time working time 2hrs | ℃ | 280 |
The highest continous working time | ℃ | 260 |
Oxygen index | % | 44 |
UL grade(1.5/3.0mm) | / | V-0 |
Mechanical properties | ||
Breaking strength | MPa | 25/- |
Elongation at break | % | >50 |
Modulus of elasticity | MPa | 700 |
Charpy without gap | KJ/M² | no break |
Charpy without gap | KJ/M² | 5 |
Ball-indentation hardness | MPa | 30 |
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