Subsidiaries of Mitsubishi Materials have falsified product data, the company said Thursday, becoming the latest major Japanese firm to admit problems with quality control.

Affected products included rubber sealing materials used for packing and gaskets, often used to prevent leaks of liquid or gas from pipes in a wide variety of industries including aerospace and automobiles, the company said in a statement.

The scandal also affected brass strip products for cars and other products, it said.

Mitsubishi Materials said its subsidiaries falsified specification data before shipping some of its products to clients.

It added the company is working with affected clients to ensure the safety of their products.