From Heliopan:
Introducing the First-Ever Filter Replacement Warranty!
Things break. And when they do, the cost to replace them is never pleasant. Heliopan UV and Protection Filters are meant to always be on your lens. They help protect your lens from damage. We want to protect you and your investment.
Heliopan is pleased to offer a one-time replacement warranty for any UV or Protection Filter purchased new from any of our authorized US Resellers. Proof of purchase in the form of a dated bill of sale with the name and address of the reseller is required. If you recently bought a Heliopan UV or Protection filter, this offer will be valid on purchases dating back to January 1, 2016.
Use it. And if it happens to break in the line of duty, replace it. No problem.
B&H carries Heliopan filters.