PTFE Seats & Packings
Precision Machined PTFE Sealing Components for Valve, Air & Fluid Control Applications
Accumatics manufactures precision-machined PTFE seats, packings, seals, and related components for OEM valve, air handling, and fluid control applications.With decades of experience machining high-performance engineering plastics, we specialize in producing repeatable PTFE components for demanding sealing applications—from initial prototypes and engineering support through medium- and high-volume production.Our capabilities include components manufactured from virgin PTFE, modified PTFE, and filled PTFE compounds selected to meet specific requirements for chemical resistance, wear, dimensional stability, pressure, temperature, and sealing performance.
Custom PTFE Valve Seats
PTFE is widely used for valve seats because of its low coefficient of friction, broad chemical resistance, and ability to create an effective sealing surface.
Accumatics machines custom PTFE seats to customer drawings and specifications for applications including:
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Ball valves
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Check valves
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Control valves
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Pressure relief valves
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High-pressure valve systems
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Fluid and gas handling equipment
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Process control equipment
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High-purity fluid systems
Seat geometries can incorporate precision IDs and ODs, angles, radii, grooves, sealing surfaces, and other application-specific features.
Our experience machining fluoropolymers allows us to account for the unique characteristics of PTFE while maintaining consistent dimensions and surface quality across production quantities.
PTFE Valve Packings
Accumatics also manufactures precision-machined PTFE valve packings and stem sealing components designed for reliable sealing around moving valve components.
Common components include:
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Valve stem packings
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V-packings and chevron packings
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Packing rings
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Sealing rings
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Backup rings
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Glands
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Washers
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Custom sealing profiles
Individual packing elements or complete sets can be produced to customer specifications.
For OEM applications requiring thousands or tens of thousands of components, our production processes are designed around repeatability, material control, efficient cycle times, and consistent part quality.
PTFE Material Options
The correct PTFE compound can significantly affect the performance and service life of a seat or packing.
Virgin PTFE
Virgin PTFE provides outstanding chemical resistance, an extremely low coefficient of friction, and excellent sealing characteristics. It is commonly selected for chemically aggressive fluid handling applications and applications where minimizing contamination is important.
Modified PTFE
Modified PTFE can provide improved dimensional stability and reduced deformation under load compared with conventional PTFE while retaining many of the chemical and friction characteristics that make PTFE desirable for sealing applications.
Glass-Filled PTFE
Glass-filled PTFE provides improved wear resistance and dimensional stability compared with virgin PTFE. It can be useful in applications where increased resistance to deformation and wear is required.
Carbon-Filled PTFE
Carbon-filled PTFE can provide increased wear resistance, improved thermal conductivity, and better performance in demanding dynamic sealing applications.
Accumatics can work with customer-specified materials and compounds or assist customers in evaluating machining considerations for a particular PTFE grade.
Built for OEM Production
Accumatics is focused on supplying OEM manufacturers requiring consistent, repeatable machined plastic components.
Our manufacturing capabilities support:
Prototype & R&D → Production Validation → Medium-Volume Production → High-Volume Production
We utilize CNC machining, screw machining, automated inspection, and specialized manufacturing processes to efficiently produce precision plastic components at production scale.
Our experience is particularly valuable for programs where PTFE components must be manufactured repeatedly over many production runs while maintaining consistent dimensional and quality requirements.
Why Accumatics for PTFE Seats & Packings?
Our goal is simple: reliably manufacture the same critical plastic component, to the same requirements, production run after production run.
Customers choose Accumatics for:
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Specialized experience machining PTFE and engineering plastics
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Medium- and high-volume production capabilities
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CNC and screw machining capabilities
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Experience with complex sealing geometries
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Virgin, modified, and filled PTFE machining
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Automated inspection capabilities
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Material and lot traceability options
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OEM-focused manufacturing
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ISO 9001:2015 certified quality system
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U.S.-based manufacturing
More Than PTFE
For applications where PTFE may not provide the required strength, wear resistance, dimensional stability, or operating characteristics, Accumatics also machines sealing and valve components from a broad range of high-performance engineering plastics.
Materials include:
PEEK | Filled PEEK | PFA | PCTFE | PVDF | Acetal | Nylon | Ultem | Polypropylene
This material capability allows Accumatics to support multiple components within a valve or fluid control assembly—not just the PTFE sealing components.
Request a Quote for PTFE Seats or Packings
Looking for a manufacturing partner for an existing PTFE seat or packing—or developing a new sealing component?
Send Accumatics your part drawing, material specification, estimated annual usage, and required quantities. Our team can review the application and provide a manufacturing quote.
Precision PTFE machining. Production-scale capabilities. Built for OEMs.