Most common pump shaft seals. #200 Shown in Picture
#200- 5/8" Shaft. The most common
#1000- 5/8" Shaft. Common in Waterways Pumps
#201- 3/4" Shaft. Common in Vico and Sta-Rite Pumps
#2131- 5/8" Shaft. Common in older Aqua Flo and Hayward Pumps. #200 Seal with Seal Cup and O-ring.
#100 -5/8" Shaft. Not very common. Used in some Pentair/Sta-Rite Pool Pumps.
#101 -Old-style
1100VC Old Vortex Pump Seal (No longer in production)