What are PTFE seals and what are the benefits?

July 15, 2023

What are PTFE seals and what are the benefits?

PTFE seal ring, the full name is Polytetrafluoroethylene seal ring, also known as PTFE seal ring.
Pure PTFE seal ring is a customized PTFE seal ring made of modified PTFE material, which has good characteristics of water resistance, corrosion resistance and aging resistance, and its temperature is between -20℃ and 200℃, and it can have good performance of resistance to mediums, solvents and all kinds of chemical mediums, and the pressure range of its use is 60Mpa. PTFE retaining ring is also known as PTFE retaining ring, F4 retaining ring, teflon gasket, PTFE gasket or PTFE seal ring, etc. It is made of pure PTFE seal ring, and it is a customized PTFE seal ring made of pure PTFE material, and it has good characteristics of water resistance, corrosion resistance and aging resistance. Gasket or PTFE sealing ring, etc., it is made of pure PTFE and composite materials made of sealing retaining ring, used for dynamic sealing p ≥ 10mpa, in the O-ring sealing ring pressure surface set up retaining ring, a single pressure set a retaining ring, double-sided pressure set two retaining ring, to play the role of axial fixation, which conical surface plus retaining ring fixed to have a high degree of centering. It has excellent resistance to acid and alkali and other chemical corrosion, high temperature, cold, abrasion, self-lubricating, non-absorbent, non-stick, not easy to aging, high mechanical strength and other characteristics, and can greatly improve and improve the sealing pressure and service life of various seals, so it is widely used in the hydraulic sealing system of various industries.
PTFE real O ring(1)

PTFE seals have the following advantages over ordinary seals:

1. Wide range of operating temperature, PTFE can withstand -250 ℃ to 260 ℃ high and low temperatures.
2. Strong corrosion resistance, PTFE has strong chemical corrosion performance.
3. Good sealing, PTFE's non-porous structure ensures good air tightness.
4. Good anti-aging properties, PTFE has a long service life and can work for a long time.
5. Low coefficient of friction sliding friction effect is small, long service life.
6. Good electrical insulation, PTFE is an excellent electrical insulation properties of the material.
7. Good vibration damping performance, PTFE has the effect of vibration and noise reduction.
8. Non-toxic and odorless, PTFE is safe and harmless, and can be used in food and medical fields.
PTFE sealing ring1(1)

PTFE seals shortcomings:

1, PTFE seals

With "cold flow". That is, the material products in a long time under the action of continuous load plastic deformation (creep), which brings certain limitations to its application. Such as when PTFE used as seals, for sealing tightly and tighten the bolt, so that more than a specific compression stress, will make the gasket to produce "cold flow" (creep) and be flattened. These shortcomings can be overcome by adding appropriate filler and improve the structure of parts and other methods.

2, PTFE seals have outstanding non-stick, limiting its industrial applications. It is excellent anti-adhesive material, this performance and make it extremely difficult to bond with the surface of other objects.

3, PTFE seals the coefficient of linear expansion of the material for the steel 10 to 20 times, larger than most plastics, its coefficient of linear expansion with the temperature changes and very irregular changes. In the application of PTFE, if not enough attention to this aspect of performance, it is easy to cause damage.

Application of PTFE material:

1. It can be used for the production of rods, tubes, plates, cable materials, raw material tape and other materials, after secondary processing can also be made into thin plates, films and a variety of Shenyang seals products, but also used as a lubricant, thickening agent.

2. It can be used as additives for plastics, rubber, paint, ink, lubricating oil, grease and so on.

3. It can be pushed and molded into thin-walled tube, thin bar, shaped bar, wire and cable insulation, rolled into thin strip for pipeline wire fastening YouQuanTe PTFE sealing material.

4. Used in machinery, electronics, chemical industry for spraying, impregnation and so on.

5. It can be used to make films, pipes, plates and rods, bearings, PTFE seals, valves and chemical pipes, pipe fittings, equipment container lining, etc. It is used in the fields of electrical appliances, chemical aviation and machinery.

6.PTFE seals are mainly used in the electrical industry, in aerospace, aviation, electronics, instrumentation, computers and other industries as power and signal line insulation, corrosion and wear-resistant materials.

In summary, PTFE seals have a long service life and reliable performance, and are the ideal choice of sealing material.

HONY plastic can customize PTFE gaskets according to customer requirements

PTFE sealing ring3

Author:

Ms. Tina

E-mail:

sales@honyplastic.com

Phone/WhatsApp:

+86 18680371609