14 Nov
2022
14 Nov
'22
4:12 p.m.
On 11/14/22 09:19, Jon Elson via cctalk wrote:
On 11/14/22 06:25, Shoppa, Tim via cctalk wrote:
The soft seals were Polyethelene, I think, the "hard" seals
for use on drives with auto-loaders were Cyclolac, AKA ABS,
and were not in much tension when closed.
Jon
I've been reporting on 9-track tape seal
failures over at
least the past 2 decades here.
Very very few of the older (I think of them as IBM or
70's/80's style) "hard plastic" tape seals failed.
Yup, these seals were under tension. I think the failure
mechanism is the square holes in the seal band develop
cracks at the outer corners, and the tension continues to
expand the crack.