Wattgate or Jena outlets?

For what ever it's worth; I own the Hubbell 8300 & 5362 non-cryo'd and cryo'd. Once the cryo'd burn in/break in there is no comparison, the cryo'd always win in my tube system and SS system. I've never had a problem with any part being brittle.

What does not survive cryo treatment well are:
1) mov's [they cracked]
2) silicone compounds for damping [they shrunk a bit and hardened].
3) neoprene rubber [shrank a bit and lost elasticity]. I also have been told that silver mica caps don't do well, and "some" adhesives".
Add the mov's and silicon (and other) damping compounds last, *after* the cryogenic treatment....that way everything will be perfect.

Hi Lak,

What is a mov ?

Mike

Metal Oxide Varistor

MOV= Metal Oxide Varistor. An electronic component used in surge suppression.

IMO, the Nylon plastic on the Hubbell outlets is more brittle with cryo treatment (piece cracked near screws). This would also affect the insulation resistance of the body. I don't think the NEC would consider this legal unless approved by UL and CSA.