What is PTFE seals?
What is PTFE seals?
PTFE (polytetrafluoroethylene) is an inert material which makes it resistant to nearly all chemicals and acids. PTFE seals are manufactured from the blending of virgin PTFE with various “fillers”. These fillers are custom blended to create the physical properties your application will need during service.
What is a radial oil seal?
Radial Oil Seals are also known as Rotary Shaft Seals, consisting of a rubber sealing lip, metal case and a spiraled tensioning spring Their function is to keep oil and grease within the system dirt and dust out.
How do I install PTFE seals?
Position the assembly sleeve with the PTFE oil seal on the shaft. Make sure that the sealing ring is aligned correctly – the sleeve must be located so that the seal can be pushed onto the shaft smoothly. Push the sealing ring onto the shaft with an even motion.
What is PS seal?
The PS-SEAL® product line stands for reliable sealing of rotating shafts at high circumferential speed, high pressure and extreme temperatures. Abrasive media is sealed as well as aggressive media. PS-SEALs are used in many different applications and can also be an alternative to mechanical seals and braided packings.
Is PTFE safe for rubber?
Lubricants with silicone or PTFE (polytetrafluoroethylene) are best for use on plastic surfaces. PTFE is hydrophobic, meaning it repels water, so lubricants containing it are effective in damp conditions. They’re safe to use on rubber, plastic, wood and metal.
What is the difference between a static and dynamic seal?
Static seals are usually used when there is no relative motion between mating surfaces. Dynamic seals are the opposite. They are used when there is motion between surfaces. A static seal functions against mating surfaces that have no relative motion between each other.
Where are rotary lip seals used?
Rotary shaft lip seals are widely used for the retention or exclusion of fluids on rotating shafts across many applications. The dynamic sealing is achieved by a narrow edge, or lip, of elastomer or plastic in contact with a rotating shaft.
Do Teflon seals require lubrication?
Slippery: It’s not just water, oil, and dirt repellent – it repels everything! (PTFE is so slippery that insects cannot get a grip, and tend to fall off.) This feature is beneficial in a number of sealing applications across industries, because it means the seal does not require lubrication.
How do you fit a lip seal?
For the oil seal to operate correctly, the seal lip must be aligned with the medium to be sealed. To make it easier to slide over the shaft, both the shaft and the oil seal lip must be lubricated properly beforehand with grease or oil. Oil seals with a leather seal lip must be soaked in oil for some time in advance.
What makes a radial shaft seal PTFE approved?
Radial shaft seals with one or more PTFE sealing lip(s) are designed to withstand aggressive environments, high temperatures, high pressures and dry running that traditional radial shaft seals made of elastomeric sealing lip materials cannot withstand. Many of the PTFE compounds are FDA approved.
How to remove old PTFE oil seals on surface?
In this Video you will see:- Remove of old PTFE Radial Oil Seal – Remove of sealing compound on surface- Apply Silicone Sealing Compound DIRKO Black RTV- Ins… AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new features
What kind of seal material is PTFE made of?
Seals made from PTFE (Polytetrafluoroethylene) are used where many other sealing materials (like elastomers, PUR, fabric materials, etc.) fail to meet the required temperature range, chemical resistance or friction and wear require- ments.
How does the seal on a radial shaft work?
The second, a sealing lip, seals dynamically and statically against the shaft. Its sealing edge presses against the counterface surface of the shaft with a defined radial load.