Knowing how pushers come apart, there was absolutely no reason for anyone to use pliers on them. The pusher tube or body has serrations on the OD, which match with serrations on the ID of the pusher caps. You don't need to grip the pusher cap at all when unscrewing the cap screw from the inside of the case, as the serrations keep the cap from spinning. Zero reason to use pliers on the caps as they have done here, and the tube or body (which by the looks of the caps shown by the OP may not have been changed - not sure) unscrew from the case with a specific tool for that purpose.
Sequence of changing a set of pushers - cap screws unscrew from inside the case:
No need to use pliers or anything to grip the caps - note serrations on the tubes still in the case:
Tubes are unscrewed using the red tool, which grips on those same serrations:
New pushers:
Pushers disassembled (again without damage to pusher caps) and tube has Loctite applied to threads:
Tubes screwed into case:
Pushers assembled:
No pusher caps were harmed in the making of this post.
Cheers, Al
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