Materials molded 

NZK Plastics LLC works with all the major commodity resins such as polyethylene (PE), polypropylene(PP), polystyrene(PS), acrylonitrile butadiene styrene(ABS), polycarbonate(PC) and acetal, also include high-end engineering resins such as liquid crystal polymer(LCP), polyphenylene sulfide(PPS), and cyclo-olefin polymer(COP) for optical lens applications. Additionally, Insert molding can be done with wear resistant acetal and nylon materials and thermoplastic elastomers(TPE’s) have also been overmolded for many ergonomic designed parts.  

Capabilities :

Our Injection Molding capabilities can be used to
develop a variety of products and parts, from simple to

• Clamping Forces from 
50 to 400 ton

• Shot Sizes from 
4 oz. to 60 oz.

• Wide Range of Materials

• Material Fillers from Glass to Carbon


Quality assurance is built into every aspect of our manufacturing
process, from material selection to performance and part life expectancy.

  1. Visual inspection
  2. Lot creation and retains
  3. Data collection
  4. ​VMS (video measurement system) for accurate measurements of product dimensions

After graduating from Penn State University in 1989 with a B.S. in chemical engineering.

Nick Karnavasworked in the Plastics Industry since graduation,first in Baltimore in plastic extrusion,then moving to Pittsburgh in 1994 to work in the resin Manufacturing Industry. In 1996, NZK Plastics, LLC was started on a part time basis by president and owner Nick Karnavas. In 2001 he directed all his energies full time to his growing Injection Molding business.

NZK Plastics LLC began with one injection molding machine and has grown to include 7 molding machines with clamp tonnages ranging from 50 tons to 400 tons.  Secondary operations include sonic welding, solvent welding, heat staking, and assembly work. Engineering services include part design and material selection and drawing is done in 3D with Solidworks software.

Today, NZK Plastics, LLC generates sales of under a million dollars and uses this small size to react quickly to customer demands and needs. Our "customer first" attitude enables us to be responsive to customers needs in a way that is often lacking in larger organizations.
At NZK Plastics we provide our customers with a wide variety of plastic injection molding products and services. From initial part concept and design to the end product, our personalized attention to detail ensures that your product is developed and molded to meet you performance needs.
With more than 20 years of experience in the plastics industry,we deliver top-quality products on time and on budget.

NZK PLASTICS, LLC Injection Molding In Pittsburgh

NZK plastics logo

Company Profile

​Copyright 2013.[ NZK Plastics LLC ]. All Rights Reserved.

NZK plastics logo

NZK Plastics, LLC


Founded: 1996

Owner: Nick Karnavas.  

Certifications:  B.S. in chemical engineering


Areas of expertise:  Custom Injection Molding, and the Resin Manufacturing Industry