Manufacturer of high quality, tight tolerance, polymer extrusion. Outer Diameter sizes from 0.002" to 0.500". We deliver on time and on budget.

Custom Extruded Tubing, Profiles and Filament for Medical, Dental, Automotive, Aerospace, Government & Defense, Military, Covid Test Kits, Fiber Optic, Energy, 3D Additive Manufacturing, Oil & Gas, Electronics, Health & Beauty, Water Filtration & Treatment, Outdoors Hunting & Fishing, Veterinary and other industries. We work closely with universities for research and development. Let us help you re-shore or secure your supply chain with a second source for your existing extrusion needs. Single lumen and rods in 3-4 weeks with our in-house tooling capabilities.

Founded in 1994, A.P. Extrusion, Inc. is a leading manufacturer in the custom extrusion industry, with on-site tooling capabilities for shortened lead times. Our expertise is in custom extrusion and polymer knowledge for a wide variety of industries with sizes ranging from 0.002" to 0.500". Wall tolerances can be achieved as tight as +/- 0.00025.

As technology advances, custom small diameter plastic tubing, profiles and rods have found their way into almost every industry. From prototype to large scale production, no job is too big or too small. Consider A.P. when reshoring or second sourcing for short lead times and to ensure your supply chain can meet your customers demand. We take pride in being one of the most experienced manufacturers of custom polymer tubing, profiles, and filament around the globe.

3D Printing filaments for Government and Defense with tight tolerance. We can produce filament with your custom 3D Printer Resin including metal, glass, and carbon fiber filled. No inconsistent diameters or roundness or poor spool winds. The cost of poor-quality filament can add up quickly.

For more information or to request a quote or sample, please contact us by phone or directly through our website form below. Our team will work closely with you to determine your specific needs from polymer grades to tolerances and more. Your requirements can come from a standard dimensional description or a custom drawing you provide.

We can accommodate development and pre-production parts along with any acceptance and qualification activities. SPC data, IQ/OQ and PQ available upon request.

Knowing your exact requirements up front is not necessary. Our experienced engineers will work with you to explore all possible extrusion alternatives.

Our Process

  • Determine our customers specifications
  • We quote our customers the best possible prices in the industry
  • Our engineers design extrusion tools in house using CAD and die flow simulation
  • On-site machine shop builds the specific extrusion tooling
  • Prototypes are extruded using in-line SPC data collection
  • Finished products are quality control measured using state of the art computerized inspection equipment
  • Products delivered on time that meet and exceed our customers’ expectations

Our Specialties

A.P. Extrusion Product Types, Services and Features:

  • Single-Lumen Tubing
  • Multi-Lumen Tubing
  • Tri-Layer Tubing
  • Small Diameter Tubing
  • Micro Extruded Tubing
  • Plastic Profiles
  • Extruded Bead Tubing
  • Striped Tubing
  • Dual Wall Tubing
  • Radiopaque Tubing
  • 3D Filament for Additive Manufacturing
  • Wall Tolerances to 0.00025"
  • Material Evaluations
  • Prototypes
  • Annealing
  • Secondary Cutting
  • Short Lead Times
  • In-Line SPC
  • Computerized In-Process and Final Inspection
  • IQ, OQ & PQ upon request
  • First Article and PPAP available
  • Extrusions Cut to Length or Spooled
  • Stock and Custom Colors
  • Custom Shapes Available
  • Custom Compounds
  • Polycarbonate Cutting to +/- 0.015”


With over 30 years of experience in the Custom Extrusion Industry, A.P. Extrusion will fulfill your Custom Extrusion needs with ease.

Our Custom Extruded products include single and multi-lumen extruded tubing. A variety of colors are available for extruded beads, striped and dual and tri-layer extruded tubing, multi bore and ribbon extrusions. Our state-of-the-art facility allows A.P. Extrusion to produce customized extrusion tooling for each project and multiple iterations for prototypes. This supports the short lead time for manufacturing your custom extrusion in many sizes and shapes from a wide range of compounds.

A.P. Extrusion can meet your unique configuration and assist in developing the Custom extrusion that best meets your custom design specifications.

A.P. Extrusion has been a leader in the extruded medical tubing industry for over 30 years. Our experienced staff and state-of-the-art facility allows A.P. Extrusion to extrude your custom medical tubing from a wide range of materials; polymers, thermoplastics and custom compounds including metal filled radiopacifies.

We extrude custom tubing with medical grade materials to meet FDA standards with strict adherence to GMPs. Our medical tubing is available in many shapes including; round, square, triangular, oval and rectangular. A.P. Extrusion manufactures medical tubing in a variety of colors including clear, custom, and stock. Using SPC workstation technology, we deliver tight tolerances, on time and on budget. Questions about small diameter medical tubing? Call: 603 890-1086 or email

A.P Extrusion takes pride in providing medical tubing when precision is a matter of health and safety. As the medical tubing industry continues to grow to meet the needs of medical and surgical advancements, A.P. Extrusion remains on the forefront of medical tubing. Our experience in the diagnostic and interventional medical products industries makes A.P. Extrusion your company's one-stop shop for all your medical tubing needs.

Translate your design ideas rapidly and cost-effectively. We use In-line laser and ultrasonic technologies. Automation and SPC data collection. Best practices.

A.P. Extrusion now has the in-house capabilities to offer rapid prototype services for a wide range of industries.

We can bring your SolidWorks print or R & D schematics to life, in a fraction of the time.


In-House Machine Shop

A.P Extrusion offers quick turnaround times. With our In-House Machine Shop, we can significantly reduce the lead times to our customers.

We avoid outsourcing for extrusion tools and dies, which in some cases can take several iterations. A.P. Extrusion offers “on the fly” changes to tooling design to help expedite your project. Because our tooling is made in-house, many single lumen extrusions do not require an engineering charge.

Free Samples

A.P Extrusion wants you to feel confident that your project will exceed expectations. We can provide free samples on request that are similar to the dimensional and material needs of your project. This allows us to narrow down a size and material selection to ensure your project stays on time and on budget.

Custom Extrusions

A.P Extrusion offers custom polymer extrusions in sizes from 0.002" to 0.500”. Single or multi-lumen extruded tubing is available. We can also customize extruded profiles, striped tubing, co-extrusions, and micro-extrusions.

Our products can be spooled or cut to length to meet your applications requirements. Most thermoplastics and custom compounds extruded at AP with wall tolerances as tight as 0.00025".


During manufacturing we monitor all process parameters to ensure dimensional stability. In-line non-contact laser micrometers and ultrasonic gages are used and are the most efficient means of quality control to continuously monitor our extrusion processes.

We use state of the art precision vision measuring systems during manufacturing inspection and in our QC/QA lab during final inspection. Benefits to tight process control are excellent quality, reduced waste, faster startup and best prices for our customers. We have a highly trained staff and are ISO 9001-2015 Certified. A Certificate of Conformance provided for each manufacturing lot.

IQ, OQ & PQ available upon request. AA (Acceptance Activities) and R&R gage studies are also available upon request. Let us know if you need a PPAP!

Short Lead Times / Expedite Options

A.P Extrusion will deliver your materials on time and on budget. Typical lead times for single lumens are 3-4 weeks. We also have options to expedite your order if needed. Our manufacturing facility is 30 minutes north of Boston, in Salem New Hampshire, U.S.A.

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Let our Scientific Extrusion Masters help to engineer and transform your vision to a reality. Utilizing flow simulation software and Solidworks design ensures the “Science of Extrusion is the core of our business.”

State of the Art Equipment

A.P. Extrusion Inc. utilizes the most advanced equipment in the industry. From Laser Micrometers, Ultrasonic detection and Micro-Vu Vision Systems, we ensure we stay on the cutting edge of technology.

Product Gallery



Extruded tubing serves multiple purposes in the medical industry. Most transfer tubing requires high-grade medical polymers that are required for transfer of medication, air, and water through catheters. Our experience with medical extrusion has been one of our greatest strengths since our founding.


In the Aero industry, plastic tubing is used for a variety of fluid transfers. It is also essential for the coating of sensitive electronic components.


Extruded tubing is used in essential sectors such as the automotive industry. Its uses include coating for sensitive electrical wires as well as carrying brake fluid, steering fluid and coolant.


Most medications dispensed by a medical device require very precise doses at very carefully controlled speeds. For that reason, having the appropriate size and configuration of tubing is essential to the Pharma industry.


Applications for the dental industry using extruded tubing range from, 3D printing rods for implants, braces elastics, medication, suction and air distribution. Dental equipment for drilling, lighting and water flossers, utilize components made by extrusion.


Extruded plastic has always been an important element of the energy industry. The durability, flexibility, and resistance to electrical current makes it ideal for coating many wires and other sensitive components.


As communication technology continues to grow, so does the need for properly insulated tubing. This is vital to the protection of the fiber optic cables to prevent data loss when carrying valuable information. Our custom extruded tubing can be color matched or striped for easy identification when multiple strands are needed for complex jobs.

Fluid Management

Our tight tolerance tubing can play a role in providing precise and consistent fluid flow for a wide range of industries. We can customize your tubing requests to the exact measurements and tolerances required for your application.


The 3D Printing market or additive manufacturing is growing exponentially. The monofilament used to print in 3D Printers, requires precision in its manufacturing process.

Inconsistent diameters, roundness and poor winding can lead to 3D printer jams. Jams can damage your equipment and cost your company time, money and filament waste. Let AP use our monofilament experience with your resin selection to get the best results from your 3D additive manufacturing application.