O-Rings for Tubular Brass

[Chefwong]

How common is/are O-Rings for tubular brass ?
Does 1-1/2" O Rings exisit for tubular brass.......I recall using O rings on the last remodel instead of nylon washers.....but we're talking 3-4 years back.

 

[Plumber1]

They are not o-rings. They are 11/2" non slip jam nut washers.
Probably need to order special.

They work really well for not vibrating off and they seal a slip joint really well too.