Like the title says, but I am unsure where to place it since none of the three options give a particularly good fit. I posted photos and hope someone who has an intact pump can remove the knob you use to add/remove air and tell me which is the correct placement of the o-ring. Top view, middle view, or bottom view.
Thanks.
![IMG_0937[1].jpg IMG_0937[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28360-5cd76f514ec7df9567fe1e5fd22c7253.jpg)
![IMG_0938[1].jpg IMG_0938[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28361-90c4d4194d1c03ac627013dc395292e6.jpg)
![IMG_0940[1].jpg IMG_0940[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28362-2bfc64a00e79a08171a9004360dc3389.jpg)
Thanks.
![IMG_0937[1].jpg IMG_0937[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28360-5cd76f514ec7df9567fe1e5fd22c7253.jpg)
![IMG_0938[1].jpg IMG_0938[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28361-90c4d4194d1c03ac627013dc395292e6.jpg)
![IMG_0940[1].jpg IMG_0940[1].jpg](https://cdn2.imagearchive.com/winemakingtalk/data/attachments/28/28362-2bfc64a00e79a08171a9004360dc3389.jpg)