300 Mini Pumps are designed for convenient and accurate metering of group sizes A, B and C WEST SYSTEM resins and hardeners. The set contains one resin pump and two hardener pumps. Pumps mount directly onto the resin and hardener containers and eliminate the mess involved with measuring by weight or volume.
300 Mini Pumps are calibrated to deliver the proper working ratio with one full pump stroke of resin for each one full pump stroke of hardener. 105/205 and 105/206 pumps deliver approximately 0.8 fluid ounces of resin/hardener with one full stroke of each pump. 105/207 and 105/209 pumps deliver approximately 0.9 fluid ounces of resin/hardener with one full stroke of each pump. Made of durable polypropylene, the pumps give years of dependable service.
As packaged, the pumps are ready to install on Group Size B containers. A package of extension tubes for Group Size A containers is included with the set. Group Size C extension tubes are included in the 105-C Resin and in the 207-SC or 209-SC packages.
These pumps fit the Jeffco 1 Gallon kits, P/N 01-07924. However you must weigh the resin and hardener, as the ratios are not the same as they are for the West System epoxy.
Excellent product, easy to use and no mess.
Easy to use. Accurate.
The hardener pump worked as advertised, the resin pump did not.
This kit comes with instructions, but in short, this kit is designed to be used with 105 resin, and several hardeners. The pumps are identified so the correct pump is used with the hardener.
The pumps are designed for specific numbers of the sytem and are not interchangeable due to the size of the lids and ratios. The shortest of the pumps fits the 207 and 209 hardeners. The middle size fits the 205 and 206 hardeners. And the longest pump fits the 105 resin.
This will not work if you are going by ratio but for dispensing ONLY, one of the pumps will fit on the EZ Poxy gallon container only.
They can be left on during storage. If they have been stored for a long time, you would need to clean and prime them. The instructions don't have exact times due to differing storage conditions.