Leaking Stop and Waste Valves Under Kitchen Sink

[JIMMIEM]

I had to shut off the water (hot and cold) under my kitchen sink in order to fix a leaking faucet. When I turned the water back on under the sink both were seeping around the bonnet nut. I tightened the bonnet nuts down as much as I could but there is some seepage. Are stem repair kits a good way to repair these? If so, any preferred brands?
Thank You.

 

[Rickyman]

Turn the handle back in a touch and find the sweet spot. It should stop leaking.

 

[Geofd]

Depends on the brand, brass craft sells the replacement washers if they are older with the brass nut you can repack the stem with graphite packing

 

[JIMMIEM]

The valves have patina on them which makes it difficult to see the markings. I'll clean them and see if I can get the manufacturer name. In the meantime I'll just try to add some graphite packing .
Thank You.

 

[Geofd]

Brass craft handles look like a football, McGuire handles are solid round handles
McGuire valves have a shamrock on them

 

[DFBonnett]

I recently had a similar question and got some guidance here...https://www.plumbingforums.com/threads/shut-off-valve-packing-nut.22981/