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While Dynatect does not specialize in cleanroom products, we occasionally support applications with limited cleanroom requirements or low-particulate design needs. As a manufacturer of custom-engineered bellows—including one-off solutions—we’re able to evaluate cleanroom compatibility on a case-by-case basis. This FAQ provides general guidance on materials, design considerations, and common questions related to bellows used in contamination-sensitive environments.
Clean rooms are controlled environments with specified limits on airborne particles per volume and maximum particle size. They’re classified based on how clean the air is, using the ISO 14644-1 standard. Classes range from ISO Class 1 (the cleanest, for very sensitive work like making computer chips) to ISO Class 9 (less stringent, for less sensitive applications). The class needed depends on how easily the product or process being done in the room can be affected by airborne particles.
Technical References:
Dynatect has supplied products for applications requiring up to ISO Class 5. Dynatect does not manufacture in a clean room facility therefore parts at this level require cleaning and packaging performed by customer.
No, Dynatect does not certify its bellows to any clean room classification. Customers must perform their own testing to determine suitability.
Polyurethane Films (used in Thermiseal construction) – May be suitable for some ISO Class 5 applications because it lacks a fabric substrate and generates minimal particulate.
Coated fabrics & Gortiflex elastomers – May be suitable for less-stringent ISO Class 8 applications.
The selection depends on:
No, Dynatect does not manufacture bellows in a clean room facility. Cleaning and packaging of supplied parts may be required in a clean room application.
If cleaning is required for a clean room application, it is the customer’s responsibility to arrange and verify the cleaning process.
For recommended material selection, customers should provide: