51 is your solutions partner for packaging tailored to your exact line of business. In addition to over 300+ shapes and sizes of stocked thermoformed plastic containers, we offer custom in-house tooling and manufacturing services and a wide range of value-added services. Our products have many benefits such as leak-resistant packaging, tamper-evident and secure containers, veritable for automation, and more.

Custom Capabilities

51 offers a wide range of value-added services and products including colored rim or full color lids and containers, tamper-evident packaging, labeling, as well as sustainable packaging (PCR).

If you have a unique need beyond clamshells, compartment containers, or trays, we have plenty of experience and solutions ready to assist you.

Container of three compartments of chocolate pretzels

Product Features

  • RF welded
  • Film seal
  • Leak resistance
  • Tamper Evident
  • Registered printing
  • Ultra Sonic Tear Strip
  • Microwave and Freezer safe
  • Random high-quality printing
  • HPP (High Pressure Processing)
  • Honeycomb patented technology
  • Blend customize materials and features


  • Shrink banded graphics
  • Variety machine sizes/types scale tooling as the project grows
  • Labeling services – ability to purchase a pre-labeled lid, clamshell, or container
  • Partnerships and relationships with packing equipment suppliers and film manufacturers