O ring lub
HiHere is a product that I use on rubber O rings.You can check it out to see if it will work for you.Parker O Lub,Comes in a tube. It is made by Parker Seal p.o. 11751 Lexington Ky 40512I use it on my head pump Rubber O rings and other rubber O rings. This O ring Lub can not be used on Hydraulic Systems. A 4 oz tube has lasted me about 5 years. Fair Winds AL