Sealing new Gaskets

[GeorgeP1111]

On the Seal Area only. Not on the outside edge. ............lm

I'm not sure what your are referring to. On any rubber or paper seals used in my projects I usually just apply the sealant to only one side of the seal (gasket) to prevent it from being squeezed out when tightened (I found this out from a plumber friend of mine years ago).

Take a seal (gasket) 4" x 4" x 0.0625" Thick

"Seal Area" = One of the 4 x 4" sides?
"Outside Edge" = the 0.0625" Thick ?
Or do you mean the area (s) that the seal mates to (engine.case for example)?

Sorry for being a tad slow here, but it's 10 degrees below zero here and I haven't had my usual half gallon of coffee yet this morning.

tnx
George

[LOUD MOUSE]

I lube the area where the seal seals. (something in that area needs to keep oil/air inside something)
Not the outer edge which holds it in place.
I keep that area dry and clean when I assemble the cases.
The seals which usually Blow Out are the Clutch Rod, Final Drive (sprocket) and Crank. .............lm

On the Seal Area only. Not on the outside edge. ............lm

I'm not sure what your are referring to. On any rubber or paper seals used in my projects I usually just apply the sealant to only one side of the seal (gasket) to prevent it from being squeezed out when tightened (I found this out from a plumber friend of mine years ago).

Take a seal (gasket) 4" x 4" x 0.0625" Thick

"Seal Area" = One of the 4 x 4" sides?
"Outside Edge" = the 0.0625" Thick ?
Or do you mean the area (s) that the seal mates to (engine.case for example)?

Sorry for being a tad slow here, but it's 10 degrees below zero here and I haven't had my usual half gallon of coffee yet this morning.

tnx
George

[e3steve]

Ed is referring to lip seals, not gaskets, George.

[GeorgeP1111]

Ed is referring to lip seals, not gaskets, George.

Ah... Now the light turned on. Ok But... referring to shaft seals, I thought I always read here to put a dab of assembly lube, grease, oil, sealant, on the outer side to prevent the seal from being damaged during installation (seating in the hole), and assembly lube, grease, oil on the lips and shaft so there is lubrication there right from the git-go.

??

George

[teazer]

No. Grease or ass'y lube is fine on a shaft, but the outer edge of the seal where it is gripped by teh cases, it should be dry.

The only time I do anything to teh outer is if a seal fails on a race bike and I have to slide a new one in without splitting the cases. Then it gets some gasket goo to help it slide in without too much damage and to seal it once it's in there.

Seals have a layer of "rubber" around the outside specifically to seal against the cases when they are clamped up.

[e3steve]

Just as an aside here: when planting seals into assembled casings, you could use Hellermann Oil (Hellerine M) which is available from electronics wholesalers. It has slippery properties when first used but becomes slightly adhesive once oxygen becomes excluded.

In the electrical & electronics world we use it in the fitting of rubber, silicone & synthetic insulating sleeves onto terminations.

[GeorgeP1111]

No. Grease or ass'y lube is fine on a shaft, but the outer edge of the seal where it is gripped by teh cases, it should be dry.

Boy, I missed this one by a mile didn't I. Good thing you folks straightened me out before I started replacing all the seals.

e3steve - Your Hellermann Oil sounds like the product I used many years ago in the U.S Air Force servicing aircraft radios. I have been looking for a product like that since then as I am into electronics as a hobby and am a Amateur Radio operator so I'm always building cables/connectors. Thanks

George