Gasket material hardness

[anvilring]

So what does this mean concerning gasket/rubber material hardness?


75 +/- Shore A +/- 5

I'm asking as I'd like to find some hard red rubber gasket material to use for old style Scagel knives.

http://www.allstategasket.com/info_gasket_material_style-1154.asp

 

[Yugami]

That's above medium hard 90 is a harder rubber. 80 plus and its referred to as rigid

 

[P.Brewster]

See http://www.smooth-on.com/pdf/durometer_with_logo.pdf

Go to McMaster Carr > Raw Materials > Rubber > Sheets & Bars

On the left, you can scroll down and filter by durometer (hardness) rating. Looks like the silicone material fits your color and hardness requirements, but I imagine that will be difficult to adhere.

 

[mike-E]

we have the stuff you linked to at my workplace. it wouldnt make a good handle imo. it's kind of easy to rip. about like a thin pencil eraser if that makes sense.

 

[anvilring]

Thanks Mike I've come to that conclusion too. I've decided to use red linoleum square tile and just cut it up and use it. I'll do a little test but it should polish up nicely. I use "old bowling ball" now for my wide black spacer material and it works great! Goodwill had old BBs for $5 each. Hopfully someday I find a red one!

 

[mike-E]

linoleum would be a lot tougher. how do you make the first saw cut in a bowling ball without losing digits?

 

[anvilring]

Well the core of a bb is cork like... so you just slice off pieces from the sides. I'll show you a pic of the engraving vise I made from one; that's how I discovered "bb spacer material" It's just hard, hard rubber.

 

[mike-E]

i tried to destroy bowling balls a few times in my hay day. amazing how far they bounce when dropped from heights. one day i am going to attempt engraving. post that pic up.