Carlson Pump Rubber O-ring
Replacement O-Ring for the 4" or 6" older model Carlson Hand Pumps. Carlson used the Rubber O-Rings pre 2004. If your pump has a green hose, it is an older model and should utilize the Rubber O-Rings.
Carlson used the Foam O-Rings post 2004. If your pump has a blue hose, it is a newer model and should utilize the Foam O-Rings.
