Plastic Sheets

ST. LOUIS, MISSOURI

Custom Plastic Sheets

Seiler Plastics is a leading manufacturer of plastic sheets. We offer custom plastic sheets up to 60" wide, custom colors, custom thickness that range from 0.095" - 0.250".  Materials we extrude are HDPE, LDPE, LLDPE, MPE, HIPS, and PP.  In addition to our decades of experience manufacturing plastics throughout North America, we have the skill set and experience to handle your next custom plastic sheets order.

Seiler Plastics is home to an extensive range of plastic sheet materials. Whether you need a low-density polyethylene, a high-impact polystyrene, or anything in between, we have what you need and are ready to make sure your requirements can be fulfilled.

To provide you with high-quality yet cost-effective plastic sheet options that meet your design specifications, we can convert extruded plastic sheets into completed products such as die-cut plastic sheets, molded polyethylene sheets, and 4x8 (48”x96”) plastics sheets, through state-of-the-art sheet fabricating technology such as: Die-cutting, Hole punching, In-line sitting, and Thermoforming

Seiler Plastics is home to an extensive range of plastic sheet materials. Whether you need a low-density polyethylene, a high-impact polystyrene, or anything in between, we have what you need and are ready to make sure your requirements can be fulfilled.


To provide you with high-quality yet cost-effective plastic sheet options that meet your design specifications, we can convert extruded plastic sheets into completed products such as die-cut plastic sheets, molded polyethylene sheets, and 4x8 (48”x96”) plastics sheets, through state-of-the-art sheet fabricating technology such as: Die-cutting, Hole punching, In-line sitting, and Thermoforming

Additionally, our team has the capability and equipment to extrude various plastic sheet materials such as:

  • Polystyrene sheets (high impact)
  • Polypropylene sheets
  • MDPE sheets
  • LDPE sheets
  • HMWPE sheets
  • HDPE sheets
  • ABS sheets (low, medium, and high impact)

Additionally, our team has the capability and equipment to extrude various plastic sheet materials such as:

  • Polystyrene sheets (high impact)
  • Polypropylene sheets
  • MPE sheets
  • LDPE sheets
  • LLDPE
  • HDPE sheets


When you work with Seiler Plastics, we focus on you, our client. We work with you to understand your ideas, needs, design specifications, and budget, and then we work diligently to make your project happen. Thanks to our in-house manufacturing process, we can provide you with customized extruded plastic sheets quickly and efficiently.