sold in a set, individual part number are for reference and orientation purposes.
These are for older generation sight view spigots with a GLASS tube. (manufactured before October of 2021)
#SG-TUBE-WASH-UPR - glass tube UPPER THIN washer
#SG-TUBE-WASH-LWR - glass tube LOWER THICK washer
The older generation has a glass tube and the newer generation has a plastic tube.
Another way to identify which Sight View Spigot you have is the newer generation spigot uses a flange style nut with 2 white flat washers.
Newer generation does not use these washers.
$5.00 shipping (for both washers)