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Accumatics offers a service to carry pre-machined bar stock in our warehouse to decrease overall lead times for our customers. Specializing in PEEK and PTFE, we carry a variety of materials in multiple sizes to cut down on lead times. In eliminating the material sourcing process, we can see lead times shorten to anywhere between a few days to a few weeks before you receive parts.
Rod
ABS
Acetal
Acrylic
HDPE
UHMW-PE
PTFE
Filled PTFE
Modified Grade PTFE (TFM)
Delrin
Delrin AF Blend
Nylon
PCTFE
PEEK
Filled PEEK
Ultem
Polyethylene
PVC Type 1
PVC Type 2
PVDF
Torlon
PFA
Nylon
Polypropylene
Rod
Tube
Acetal
Delrin
Delrin AF Blend
HDPE
UHMW-PE
Nylon
PEEK
Filled PEEK
PTFE
Filled PTFE
Modified Grade PTFE
Polyethylene
Polypropylene
Ultem
Acetron GP
Nylon
Torlon
PVC Type 1
PVC Type 2
PCTFE
Tube
Sheet
ABS
Acetal
Acrylic
Delrin
Delrin AF Blend
HDPE
UHMW-PE
Nylon
PCTFE
Polypropylene
PPS
PTFE
PVC Type 1
PVC Type 2
PVDF
PEEK
PFA
Sheet
Materials and Application Selector
Learn more about the following materials here:
Properties | PEEK | Glass-Filled PEEK | PTFE | Modified PTFE | Glass-Filled PTFE | Carbon-Filled PTFE | PFA | PCTFE | PVDF | Ultem (PEI) | Acetal (Delrin) | Nylon |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Machinability | Excellent | Very Good | Moderate | Moderate | Moderate | Moderate | Moderate | Very Good | Good | Good | Excellent | Good |
Moisture Absorption | Very Low | Very Low | None | None | None | None | None | Near Zero | Very Low | Low | Low | High |
Dimensional Stability | Excellent | Excellent | Moderate | Improved | Improved | Excellent | High | Exceptional | High | Very High | Excellent | Moderate |
Friction Coefficient | Low | Moderate | Ultra-Low | Low | Low | Low (but higher than PTFE) | Low | Low | Moderate | Moderate | Low | Moderate |
Wear Resistance | Excellent | Exceptional | Poor | Improved | Very Good | Excellent | Moderate | Very Good | Good | Good | Good | Good |
Chemical Resistance | Excellent | Excellent | Outstanding | Excellent | Excellent | Excellent | Outstanding | Excellent | Excellent | Good | Moderate | Moderate |
Max Temp (°F) | 480 | 500+ | 500 | 500 | 500 | 500 | 500 | 300 | 300 | 340 | 185 | 220 |
Strength | Very High | Extremely High | Low | Moderate | Moderate | Moderate-High | Moderate | High | Moderate | High | High | Moderate |
Application | Best Material | Why |
|---|---|---|
Electrical / high-temp applications | Ultem (PEI) | Thermal + electrical stability |
Cost-efficient components | Acetal / Nylon | Machinability + cost balance |
Tight tolerance machining | PEEK / PCTFE / Acetal | Dimensional control |
Semiconductor / high purity | PFA / PVDF | Clean fluid handling |
Cryogenic valve sealing | PCTFE | Dimensional stability + low moisture |
Extreme chemical exposure | PTFE / PFA | Broadest compatibility |
Abrasive sealing applications | Glass-Filled PTFE | Increased wear resistance |
Improved sealing vs standard PTFE | Modified PTFE | Reduced creep + better stability |
High wear + friction environments | Carbon-Filled PTFE | Superior wear + thermal conductivity |
High-pressure structural components | PEEK / Glass-Filled PEEK | Strength + creep resistance |
Engineering Plastics for Valves FAQ's
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