Overview Reviews Product Description The Best Drop-In Replacement Mechanical Seal. Product Videos Custom Field Brand Name CENTURION - Best Drop-In Replacement Seal Product Reviews Write a Review Write a Review × BSM Pump Corp.® BSM Pump Corp.®, 231-31-1357, Mechanical Seal, 1-7/8" Shaft, Type E Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *