The terms of sale are so clear and concise. But I don’t see a warranty period. Would they still replace a part on a 1961 sink?

Not sure about warranty, but a few years ago my mother's 80s(?) era Delta faucet started leaking. I sent a blurry photo to Delta's service team and a few days later had a link to a replacement part and an old manual scanned as a PDF. For a 40 year old product!

Ultimately we replaced the whole faucet and fixture, but that single reply probably made me a customer for life.