PTFE Teflon™ Guide Rings & Piston Rings | DCW

Piston Guide Rings

For preventing metal-to-metal contact between piston and cylinder during sliding (particularly in case of lateral forces), PTFE guide ring is simple assembly and wear-resistant. Thanks for its good media resistance, the piston guide ring can be used in several media ranging from mineral oil-based hydraulic liquids, environment-friendly hydraulic liquids and water-oil emulsions to flame-resistant hydraulic liquids and dry-running applications. Piston guide rings offer very good gliding behavior, good emergency running properties and also a high wear resistance. Additionally, they help to attenuate mechanical vibrations.

ptfe guide rings

Why Order PTFE Piston Guide Rings From Us?

For an efficient seal, our piston rings provide a consistent and tight radial fit between the cylinder wall and the piston ring's running surface. The radial fit is produced by the piston ring's inherent pressure. The piston ring is also designed to keep the piston ring lands sealed. Cylinder wall contact pressure is another piston ring style that we provide. The flexibility of the piston ring material, the free piston ring gap, and exposure to combustion gases all influence this pressure.

  • Compressors operating
  • Gas rotary pumps
  • Liquid gas and vacuum pumps
  • Rotary compressors
  • Food processing
  • Pneumatic hammer drills
  • Automotive

DCW Guide Rings & Piston Rings Designed For Your Application

  • Chemical and thermal resistance
  • Temperature range from –200°C to +260°C
  • Suitable for use with non-hard-ened contact surfaces
  • High bearing capacity, pressure resistance and low wear
  • No stick-slip, Minimal lubrication required
  • Extremely low breakaway forces
  • Large compound selection
  • Easy installation due to cut grooves

Samples of Our Work, RoHS & FDA Compliant

ptfe guide rings

Piston Guide Rings 1

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Piston Guide Rings 2

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Piston Guide Rings 3

PTFE piston rings

PTFE piston rings

Guide Rings Material Selection

Material Name Compound % Main Properties Color
PTFE / Very low coefficient of friction and excellent chemical resistance.

FDA approved.

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


Custom Performance & Design

In house material compound capability and rich experience in PTFE filed can full fill your needs on guide rings and piston seal rings.


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 guide rings, wear rings and piston ring prodcution from our in house compression molding and PTFE machining.

Your Trusted PTFE Piston Guide Ring Manufacturer

Wide Material Selection

We supply the best grade materials in the industry. All of our materials can be customized as per preference. Some of our materials include PTFE, PTFE Compounds, PEEK, PFA, PVDF, PCTFE.

Free Samples

Upload your design and get a free sample of the product from us. Send us your designs and get free sample PTFE  wear rings or Fluoropolymer Parts!

Excellent Custom Service

We not only produce bespoke products based on your requirements, but we also handle the full process from quotation request to finished product production.

Serve For Different Industries

We have several years of working experience with customers in various industries and can satisfy the needs of various industries as a professional machined parts manufacturer.

Quality Management

We maintain a very strict quality management process. Our quality management happens at every step, beginning with the inspection of incoming materials and checking in between the process, and finally inspecting the end product for assured quality. 

Molding & Machining Techniques

We provide our customers with premium PTFE Compression Molding which was custom designed for the particular molding characteristics of PTFE resins. 

Dechengwang Guide Ring & Piston Ring

PTFE Teflon™ Guide Rings & Piston Rings

A hydraulic cylinder piston and rod are guided by the guide ring, which also absorbs lateral forces. Metal-on-metal contact between the cylinder’s moving parts, such as the piston and the cylinder or the rod and the cylinder head. These non-metallic guide rings have a high bearing load capacity, eliminate local stress concentrations, are wear-resistant, have a low coefficient of friction, and have low maintenance costs.

The piston ring is a component that is required for an engine to function properly. It is located between the piston and the cylinder. The combustion chamber is sealed by piston rings, which transfer heat to the cylinder wall and regulate oil consumption. The internal spring force that extends a piston ring based on the design and qualities of the material employed is known as inherent pressure. To compress a piston ring to a smaller diameter, inherent pressure necessitates a large force.

We serve the best quality PTFE guide rings & piston rings to several different industries. We also provide materials for custom designs. You can get a free sample of PTFE rings or Fluoropolymer Parts from us as well.

PTFE piston rings

Guide Rings Applications For Different Industries