Pure PTFE Flat Washer Backup Ring / Mechanical White Seal Ring Pump Parts

PTFE (Polytetrafluoroethylene)

Known as the gold standard, PTFE material is often the first choice for many advanced applications such as aerospace, electronic, medical, chemical industry due to its superior lubricity, temperature and chemical resistance, biocompatibility and lowest coefficient of friction.

Properties

1, Low coefficient of friction;
2, Flexibility at low temperatures and thermal stability at high temperatures,Broad working temperature range (500°F/260°C – -292°F/-180°C);
3, Chemically resistant – all normal solvents, acids, and bases;
4, Low dielectric constant and low dissipation factor;
5, Non-flammability;
6, Non-stick, Easy to clean;
7, Long-term weathering;
8, High arc resistance, surface and volume resistivities

Product description

Back-up Rings have no intended sealing function.
They are protective and supporting elements made from extrusion-resistant materials which generally have a rectangular cross section. They are installed in a groove together with an elastomeric sealing element preferably with a corresponding O-Ring in static applications.Due to the tight fit of the Back-up Ring in the housing, they prevent extrusion of the pressurised elastomeric sealing element into the sealing gap.

Product Show

FAQ

1. Are you trading company or factory ?

A:We are a factory .

2. How to produce ?

we can produce according to type and sizes or according to drawing and samples you provided.

3. Are you a manufacturer ?

Yes, we are

4. How to deliver the products?

For small order, we will deliver by express, such as DHL, FEDEX, UPS,TNT.etc
For large order, we can deliver by air or by ship as you required.

5. Can you provide free samples?

A: Sorry, Free samples are not available for the custom parts. But after you place the order, samples cost would be return. Which is "FREE" in some way.