Cryogenics is one of those boring industrial niches that nobody talks about but quietly prints money.

Think about it: LNG terminals, space launches, semiconductor fabs, AI data centers needing liquid cooling — all need specialized pumps, valves, seals that can handle extreme temps without failing.

These aren't sexy businesses. They're capital-intensive, require deep engineering expertise, have long sales cycles. But once you're spec'd in? Sticky as hell. Switching costs are brutal. Maintenance contracts are recurring. Margins are solid because nobody wants to cheap out on mission-critical components.

The best part: most of these companies are private or tucked inside larger industrials. Not getting bid up by growth chasers. Just quietly compounding as infrastructure spend and energy transition create tailwinds.

This is exactly the kind of overlooked industrial that lower middle-market PE should be circling. High barriers to entry, essential to customers, predictable cash flows.

Not everything needs to be software. Sometimes the best returns come from companies that make stuff work at -300°F.