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I have this Pump and found the instruction manual very useful and applicable to most pumps.

http://www.vitalitymedical.com/pdf/osbo ... manual.pdf


http://www.vitalitymedical.com/timm-osb ... -pump.html

The Easy-Action Ring Applicator (Page 12) will cut the rings due to sharp edges on the inside of the cap. I don't use it for this reason. With a little practice I use my hands.