Resealing a PCP - to lube or not to lube the o-rings?

[averageplinker]

Hello knowledgeable gang,
I will reseal my FN19 soon. Do I need to put a very small amount of silicone grease/oil on the new O-rings or do I leave them dry?
Cheers

[crowbar]

I always use a smear of Molycote on O rings , It just makes it easier !

Cheers Crowbar

[1952paul0]

leave them dry.

[Loki_79]

I always use the lightest smear of vacuum grease that I can, that is rub a small amount between your fingers and then over the o-ring.

[Airsporter1st]

Definately lube them using a very small amount of silicone grease. If you don't, you risk cutting them during installation and also not seating correctly.

[Trumpetier]

I use Abbey SM50 just the slightest smear

[Jezzer]

I always use the lightest smear of vacuum grease that I can, that is rub a small amount between your fingers and then over the o-ring.

Exactly what I do.... including the vacuum grease.

[barrel]

I always use the lightest smear of vacuum grease that I can, that is rub a small amount between your fingers and then over the o-ring.

Exactly more is less, don't over do it.

Kindest regards


Barrel

[averageplinker]

Cheers chaps.

[angrybear]

I always use the lightest smear of vacuum grease that I can, that is rub a small amount between your fingers and then over the o-ring.

^^ this^^

If dry there is a small risk that they could snag/grip & tear, but you only need enough lube (molykote 111 or similar) to just put a shine on the surface.

[rabbitman]

Lube otherwise they can roll and twist when you slide the front and rear blocks into position.