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Food Processing

Food Grade Polyurethane Parts

PSI manufactures FDA approved cast urethane products for food processing applications. We manufacture urethane rings, gaskets, and custom-molded, food grade polyurethane parts for food processing applications. Chute liners, guides on conveyors, and capper rings for the bottling industry are just some examples of components that are required to be FDA compliant.

There are two different types of FDA material PSI Urethanes produces: FDA Wet and FDA Dry.

The reason there are different types is based on the environment they are used in. If a material is used as a guard on a conveyor that carries dry products such as sugar or flour, that would be a FDA Dry application. If it carries fish or other meat products, that would be a FDA Wet application.

FDA Dry Food Approved Products

  • Available in 30 Shore A through 90 Shore A durometers (hardness)
  • Colors: black, blue, dark blue, green, natural, peach, red, and white.

PSI certifies that all components used to produce your product are listed under:

CFR 21-177.1680 “Indirect food additives” – Intended for use in contact with bulk quantities of dry food that do not have free surface fats or oils: Polymers for 30 Shore A through 90 Shore A durometers (hardness)

FDA Wet Food Approved Products

  • Available in 40 Shore A through 90 Shore A durometers (hardness)
  • Color: black, blue, dark blue, green, natural, peach, red, and white.

PSI certifies that all components used to produce your products are listed under:

CFR 21-177.2600 “Indirect food additives” – Aqueous food – Articles intended for repeated use in contact with food.

More About FDA Regulations on Food Processing Materials 

The FDA established the Division of Food Contact Notification and Review within the Office of Food Additive Safety (OFAS), Center for Food Safety and Applied Nutrition (CFSAN), to help ensure components of food contact articles, including food packaging and processing equipment, are safe for their intended use.

The components of the food contact article must be listed within 21 CFR 174 through 179, applicable to the type of substance and intended use. Many polyurethane resins are cleared for use as food contact materials through a number of regulations in 21 CFR, which include specific requirements for the composition of polyurethane resins as well as limitations on their conditions of use.

Visit the Packaging & Food Contact Substances page on FDA.gov to learn more.

Typical Properties of Wet Food Grade Formulas

*Please note that wet food approved urethane can be used for wet or dry applications.  Dry food only approved formulations available as well.

Durometer (ASTM D2240)80A85A90A
TypeTDITDITDI
Rebound, % (ASTM D2632)57%55%53%
Tensile Strength (ASTM D412)3539 psi4193 psi4035 psi
100% Modulus (ASTM D412)485 psi717 psi848 psi
300% Modulus (ASTM D412)761 psi1148 psi1346psi
Elongation, % (ASTM D412)605%567%522%
Die-C Tear, pli (ASTM D624)267 pli356 pli401 pli
Trouser Tear, PLI (ASTM D1938)59 pli76 pli98 pli
Split Tear, pli (ASTM D470)45 pli72 pli53 pli
Taber Abrasion (mg loss/revolution)0.00040.00470.0108
Compression Set, 22 hrs @ 70°C (ASTM D395)28%27%30%

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