Re: Poppet Valve Up-stop Home › Forum › Ask A Member › Poppet Valve Up-stop › Re: Poppet Valve Up-stop garry-in-michiganLifetime MemberReplies: 3583Topics: 31 December 9, 2017 at 10:19 pm #68440 I found the right size small cork like Tubs pictured in the home canning section of my local Publix grocery store. . . 😆