In my experience, as static seals, sandwiched firmly between carefully machined metal parts such as lids on IP rated enclosures, the cut and shut rings are very good indeed, as good as the continuous kind.
But then in this sort of application, a bead of mastic can also be good, and cheaper.
For moving seals on sliding shafts, OK if the shaft moves piston like, you may see occasional breakages if the shaft is rotating though, and not so good against pressure either.
Extending the technique, in the time honoured method of "limits of the possible can be found by going beyond and coming back quickly hoping no-one was looking", attempts to make replacement rubber drive belts for cassette players and so forth in this cut and shut way are something of a disaster, lasting about 5 mins before coming undone at the glue join.
There may be better and worse choices of glue for the rubber.
I presume you need an odd size not within stretch of a standard.
In my experience, as static seals, sandwiched firmly between carefully machined metal parts such as lids on IP rated enclosures, the cut and shut rings are very good indeed, as good as the continuous kind.
But then in this sort of application, a bead of mastic can also be good, and cheaper.
For moving seals on sliding shafts, OK if the shaft moves piston like, you may see occasional breakages if the shaft is rotating though, and not so good against pressure either.
Extending the technique, in the time honoured method of "limits of the possible can be found by going beyond and coming back quickly hoping no-one was looking", attempts to make replacement rubber drive belts for cassette players and so forth in this cut and shut way are something of a disaster, lasting about 5 mins before coming undone at the glue join.
There may be better and worse choices of glue for the rubber.
I presume you need an odd size not within stretch of a standard.