During our almost five decades in business, Proto Plastics has successfully molded a wide variety of engineering grade resins – nearly 300 in all.
Among the most common are:

Among the most common are:
Engineering Grade Resins
- ABS – Cycolac, Magnum
- Acetal – Delrin, Celcon
- Acrylic – Plexiglas
- Nylon – Zytel
- PC/ABS – Cycoloy, Bayblend
- Polycarbonate – Lexan, Makrolon
- Polyester – Valox, Celenex
- Polyetherimide – Ultem
- Polysulfone – Radel, Udel
- PPO – Noryl
- PPS – Ryton, Fortron

Thermoplastic Rubbers/Elastomers
- DynaFlex
- Kraton
- Santoprene
- Sarlink
- Urethane – Texin, Estane, Versollan
- Vyram
Specialty Compounds
- Glass filled
- Mineral filled
- Teflon filled
- Static dissipative, conductive
- RTP and LNP
Commodity Resins
- Polyethylene
- Polypropylene
- Polystyrene
Each of these thermoplastic materials has different processing and performance characteristics, and the proper choice for your part is sometimes not obvious. Our engineers can offer helpful guidance on functional properties, and recommend the material that best combines cost-efficient injection molding with reliable long-term service when incorporated in your end product.