Dover High Performance Plastics fabricates components from a broad range of high‑performance and engineered plastics, including PTFE fluoropolymers, filled and pigmented PTFE, FEP, PFA, PCTFE, PVDF, ETFE, polyimide, acetal, polyethylene, UHMW‑PE, nylon, polypropylene, polycarbonate, PVC, PEEK, PPS , PEI, phenolic, ABS, and many other compatible engineered polymers. The company’s material specialization is PTFE and inorganic filled fluoropolymers, which provide chemical inertness, high heat resistance, low temperature flexibility, low friction, excellent dielectric properties, weather and moisture resistance, non‑adhesive characteristics, and non‑flammability for demanding mechanical, chemical, and electrical environments.
PTFE Fluoropolymer Materials
We specialize in virgin PTFE, and inorganic filled fluoropolymers. They offer unexcelled combinations of properties including chemical inertness, high heat resistance, low temperature flexibility, low friction coefficients, excellent dielectric properties, weather and moisture resistance, non-adhesive characteristics and non-flammability.
PTFE fluoropolymers resins are ideal for use in demanding mechanical, chemical and electrical environments. And, for less critical applications, we can recommend plastics which combine high impact strength with wear resistance of structured materials…and the importance of cost-effectiveness.
Glass Filled PTFE
Glass filled PTFE is the most commonly used filler. The filler has only a slight effect on both the chemical and electrical properties, yet adds greatly to the mechanical properties of the unfilled material. This fibrous filler offers the best balance of chemical, electrical and mechanical properties of all other materials and is used in applications requiring low cold flow and high compressive rigidity. Higher glass content compounds increase wear resistance. Glass filled compounds can be very abrasive.
Bronze Filled PTFE
Bronze filled PTFE offers a gain of several desirable property characteristics such as hardness, low wear, higher compressive strength, better dimensional stability, higher thermal conductivity, low creep and cold flow. This compound is used in the steam service and eliminates valve sticking after periods of inactivity. Turning torque required to open is low and lubrication unnecessary. Drawbacks of this filler are that it should not be used in corrosive service or against an aluminum mating service or in the presence of water. Bronze filled PTFE is especially designed for heavy duty mechanical service such as bearing applications.
Carbon Filled PTFE
Carbon filled PTFE compounds are used mostly in chemical and mechanical applications. The low friction property of the filler reduces initial wear and starting friction. This filler displays higher load carrying capabilities in rubbing contact applications such as piston rings and seals requiring low static break away efforts. Carbon filled PTFE reduces wear of soft metal mating parts and serves well in corrosive environments. This compound has a long life without lubrication. The use of carbon greatly enhances the compressive strength.
Graphite Filled PTFE
Graphite filled PTFE compounds offer the same results as Carbon filled PTFE. However, Graphite filled PTFE has a much lower compressive strength. This compound is good where aluminum and water are concerned.
Stainless Steel Filled PTFE
Stainless Steel filled PTFE compounds are used for seats and seals requiring high heat and steam applications. This compound is also used in many applications involving food processing.
Pigmented PTFE
Pigmented PTFE materials contain pigment in addition to other fillers. The pigments can add to the wear and compressive properties to previously existing compounds. The pigments also aid in applications where color coding is needed. Typical applications requiring these materials are shaft seals, piston rings and cups.
REACH Compliance:
Component parts supplied by Dover High-Performance Plastics do not contain or have added to, any Substances of Very High Concern (SVHC) as identified by the REACH Candidate list in concentrations above 0.1% by wgt. as specified.
RoHS Compliance:
Our materials and products do not exceed the Maximum Concentration Values (MCVs) of 0.1% by wgt. for Lead, Mercury, Hexavalent Chromium, PolyBrominated Biphenyls, PolyBrominated Diphenyl Ethers or 0.01% by wgt. for Cadmium.
Conflict Minerals:
Dover High-Performance Plastics parts are not manufactured with any Conflict Minerals per the requirements specified by the Dodd-Frank Act.
All Engineered Plastics
- UHMWPE
- Nylon
- Delrin
- Peek
- Kynar
- PPS