Qingdao Global Sealing-tec co., Ltd
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PTFE Back-up Rings
Back-up rings are the most common anti-extrusion devices in dynamic sealing. They provide simple solutions to safely increase system function by positioning a more robust material adjacent to the extrusion gap,taking the seal’s place and providing a barrier against high pressures. Back –ups can be used to offset the reduced pressure rating effects of wear rings or to improve seal against pressure spikes,or to ensure seal performance at higher tempertures.
PTFE Seal Ring
PTFE Rings are an ideal solution for sealing applications where there are high temperatures and corrosive liquids or gases involved.
Application :
• Mechanical Seal
• Chemical environments
• Use in acidic or basic environments
• Sealing of moving or sliding surfaces
Product Description
| Product name | back up ring ptfe wear strips |
|---|---|
| Material | ,ptfe |
| Color | white, red, black etc. |
| Working temperature | -150℃~+230℃ |
| Hardness | 90A±5 |
| Working medium | Hydraulic oil, gas, water, etc |
| Size | all sizes, stand size or customized size |
| Certification | TS16949, ISO9001 |
| Shape | round , square , cup, bowl or according to your request. |
| Packing | carton, box, palstoc bag |
| Feature | 1.Excellent sealing effect.
|
For non-standard parts, samples or drawings are avaliable for us.
Product Show
Main material and properties
| PTFE Ring | 1. Low coefficient of friction, good abrasion. |
| 2. Two modified plastic back-up rings to avoid extrusion. | |
| 3. The initial design in shrink range ensures sealing performance at low pressure. | |
| 4. The rectangular geometry of seal is stable. | |
| Back-up Ring | 1. Seals and elastomer are with extruding resistance performance. |
| 2. To avoid the elastomer's broken and make it easy to install, oblique incision open in the radial plance. | |
| 3. Be used as wiper seal, and scrape off the internal pollutants. | |
| 4. High elastic modulus materials, has high rigidity and extruding resistance performance in high pressure and temperature | |
| 5. Round angle can avoid breaking the elastomer down. | |
| NBR Ring | 1. Avoid crimping with T form elastomer. |
| 2. Avoid extruding with back-up ring. | |
| 3. With initial pre-tightening force, it has good sealing performance in low and high pressure. | |
| 4. Its geometry shape makes it stable and with good leakage ability. | |
| 5. Easy to install and decrease leakage. | |
| 6. Chamfer of elastomer can save much space, and reduces the load of back-up ring. |
FAQ
1. How to produce ?
we can produce according to seal type and sizes .
if you need some customized parts, we can produce according to drawing and samples.
2How 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.