
Paradigm Insights™
Engineering Reliability, Simplifying Sealing
Explore articles, guides, and resources from Paradigm Seals™—covering installation & maintenance, the Paradigm difference, pump compatibility & applications, seal sizing & selection, and strategies for long-term value & reliability. Our mission is to give operators the knowledge they need to make confident decisions and reduce downtime.
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Understanding Oversized Bore Mechanical Seals
When selecting a mechanical seal, confirming the correct bore size is just as important as choosing the right seal type and face combination. For many pumps, a standard bore will suffice. However, certain pump models and applications require an oversized bore. Misidentifying this detail can lead to incorrect orders, failed installations, and costly downtime.
This article explains what an oversized bore is, when it’s required, and how Paradigm Seals™ makes the selection process simple.

Standard vs. Oversized Bore Seals: What’s the Difference?
When it comes to replacing or upgrading a mechanical seal, understanding bore size is one of the most important steps in selecting the right product. At Paradigm Seals®, customers often ask: What’s the difference between a standard bore and an oversized bore seal? This guide breaks it down so you can confidently choose the correct option for your pump.