PTFE Features:
1. PTFE gaskets, washers produced by moulded with suspended
PTFE powder or produced by CNC directly
2. PTFE compared with other plastics have good performance of high
temperature resistance,chemical corrosion resistance
3. It widely used for sealing material
Product Description
| Product name | PTFE back-up ring |
| Material | |
| Color | white, red, black etc. |
| Hardness | 40-90 Shore A |
| Size | all sizes, stand size or customized size |
| Work Medium | Hydraulic oil, gas, water, etc |
| Shape | round , square , cup, bowl or according to your request. |
| Packing | carton, box, palstoc bag |
| Advantages | 1.Good abrasion resistance, long lifetime.
2.Without metallic contact of the sliding surfaces.
3.Control the machine's vibration.
4.Absorb the size's load.
5.Enlarge the clearance of seal's extrusion.
6.Simple groove design, and high load capacity.
7.Low repair cost. |
For non-standard parts, samples or drawings are avaliable for us.
Product Show
Main material and properties
| character | PTFE | FEP | PFA | PVDF |
| specific gracity | 2.13-2.22 | 2.12-2.17 | 2.12-2.17 | 1.76-1.78 |
| melting point(℃) | 327 | 270 | 302-310 | 173-175 |
| maximum continous user temperature(℃) | 260 | 200 | 260 | 150 |
| tensile strength(mpa) | 20-45 | 19-22 | 27-35 | 39-59 |
| coefficient of elongation(%) | 200-450 | 250-330 | 280-400 | 300-450 |
dielectric constant
10^3HZ
10^6HZ | 2.1 2.1 | 2.1 2.1 | 2.1 2.1 | 7.72 6.43 |
| volume resistance(Ω-CM) | >10^18 | >10^18 | >10^18 | >10^14 |
dielectric breakdown strength
v/mil | 480 | 500-600 | 500 | 260 |
FAQ
1. How to produce ?
we can produce according to seal type and sizes .
2 How to make the order?
You can send us email or inquiry at alibaba directly.
3. What is your main market?
Our main market is north America, UK, Australia, Middle East , Europe.
4. Do you provide samples ? is it free or extra ?
We can supply you free samples without extra charges, but express cost is for buyer's account.
5. How is the quality?
Strict control when production, 100% inspection before shipment.
Product Tags:
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PTFE Slide Ring , Abrasion Rectangular Hydraulic PTFE Back-Up Ring , PTFE PU Nylon Gasket Images
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