There's a whole range of delays having nothing to do with tempo. 10 to 60 ms can be used to thicken, spread, add depth, both stereo (each side slightly different settings) or mono.
Sometimes on voice for example, a very short set panned for spread, with a longer one, maybe with the highs trimed back, for tempo/feel up the center. Or a real hot full bandwidth 50-60 ms for that "I am the Walrus" crackle.