Request for Evaluation

Although we have changed the lettering style over the years based on improvements in manufacturing methods, the style may also vary from size to size of product. As a result, visual differences in lettering are not always conclusive. However, there are additional product features that can be used to screen Crosby product for authenticity.

If you feel there is a question of whether a product is genuine Crosby, please email Crosby Engineering at with a description of the product, capacity, size, and why the product is suspected to be counterfeit. Attach a photograph of the product if possible, or send a sample to:

Attn: Engineering Dept.
2801 Dawson Road
Tulsa, OK 74110

Please complete and include the Request for Evaluation form when sending a sample.