Armstrong Seal Bearing Assembly # 816032-000 fits pump models H-51, H-52, H-53, H-54, S-55, S-57

The unit is well built like the original. The gasket that seals the pump together is very narrow as is the original. Be sure to have some gasket cement available to be able to join the two pieces without the gasket moving out of alignment.

Seems to be a quality replacement

Delivered before expected, excellent job, product is what I expected.

Suitable replacement for a Bell & Gosset unit at a better price !