We find the ones with the teflon lid liners to be the most durable
for our resists.

On Oct 31, 2005, at 7:04 PM, William Lanford-Crick wrote:
> .  Can someone
> recommend which is the best cap material for our applications?
>          Options are:  Poly-Seal*-lined Closures, Polyvinyl-lined
> Closures,
> Rubber-lined Closures, or Teflon* Faced PE-lined Closures.