Custom Performance & Design
In house material compound capability and rich experience in PTFE filed can full fill your PTFE project.
O-Ring & Back-up Ring
PTFE O Ring is mainly used for static sealing application in pipes, cylinders, bushings, stems, flanges and connections. Where chemical and physical inertia, as well as resistance to friction, temperature and ageing, are particularly strategic.
Backup rings are not seals themselves, but are used in conjunction with O-rings or other seals in high-pressure applications. Backup rings are installed in the downstream side of the gland, however, can be installed either side of the O-ring to give a high-performance double-acting seal.
Finished Products
Semi-Finished Products
Why Order from Us?
For over one decade, Dechengwang has been a leader in servicing and supplying our customers with only the best quality O-Rings and machined plastics all at competitive pricing. With so many applications across so many industries, it’s easy to see why manufacturers turn to PTFE or compounding O-rings when they seek a quality sealing solution. You can find our O-rings perform well in such industries as:
- Food and beverage
- Mechanical Engineering
- Automotive
- Electronics & Semiconductors
- Aerospace
- Oil & Gas
Designed for Your Application
- Low friction coefficient
- Functions at temperature extremes
- Excellent moisture resistance
- Good cryogenic capabilities
- Good tensile strength
Samples of Our Work, RoHS & FDA Compliant
PTFE back up rings
PTFE Guide Ring
PTFE O Ring
PTFE Piston Rings
PTFE Ring
PTFE Rings
PTFE v ring
O-Ring & Back-up Ring Materials Selections
| Material Name | Compound % | Main Properties | Color |
| PTFE | / | Very low coefficient of friction and excellent chemical resistance. FDA approved. | White |
| Glass Filled PTFE | Up to 40% | Improved ware resistance, compression strength, creep resistance, chemical resistance. Good performance in oxidising environment, good creep resistance. | White cream |
| Carbon Filled PTFE | Up to 35% | Improved electrical and termal conductivity, resistance to load, low coefficient of friction in dry, water, steam applications, chemical resistance. Superior ware resistance increase and low friction properties. | Black |
| Graphite Filled PTFE | Up to 25% | Improve wear resistance, decrease friction and increase sliding properties against soft metals- chemical inertness. Improve the temperature resistance in some way. | Black |
| Bronze Filled PTFE | Up to 60% | Improved compression strength, wear resistant, high thermal conductivity, resistance to abrasion. Reduced chemical resistance. | Dark Brown |
| Molybdenum disulphide(MoS2) Filled PTFE | up to 5% | Increased PTFE properties of hardness and wear resistance. Increased sliding properties and decrease friction. | Blue azure |
| PEEK Filled PTFE | Up to 20% | Increased thermal resistance, sliding properties, surface hardness. Superior properties on dynamic applications. | Light Brown |
| PEEK | / | Excellent mechanical properties including strength, rigidity, impact resistance, low wear rate and low coefficient of friction, retained over a wide range of service temperatures. | Light Brown |
| PEEK compound | / | Improves technical and chemical properties like deformation under load, wear resistance, thermal expansion and electrical conductivity. | / |
| PVDF | / | Resistant to UV radiation and offers high mechanical strength and abrasion resistance. | Beige |
| PCTFE | / | Better mechanical properties than other fluoropolymers, low permeability. | Translucent |
| PFA | / | Excellent chemical and temperature resistance, electrical insulation and excellent processability | Natural |
Industrial Customization
Small or Large Order
We offer on-demand manufacturing according to your actual order volume. No business too small.
Custom Machining
We'll review your volume & design, to determine a most cost-effective approach to your PTFE part production from our in house PTFE compression molding and PTFE machining.