Where can i find lengths of "L" shaped rubber?

Go to this link, in the upper left type in 'rubber'.

Check out the L shaped stuff (2nd down on right).

It's $2.65 per foot.

http://www.mcmaster.com/

You have 4 surfaces here in a tube: a) The outer tube, where you'd generally hold onto, b) The inner tube, where fluid or whatever would flow through, c) One end of the tube, and d) The other end of the tube. Let's do these in order: a) The radius is 24 inches and length is 10 feet. We'll convert the feet to inches also: 120 inches SA = 2πrl SA = 2π(24)(120) SA = 5760π in² b) The radius is 20 inches with the same length: SA = 2πrl SA = 2π(20)(120) SA = 4800π in² c and d) Both ends are identicle. It's the area of the larger circle minus the area of the smaller one, to leave the outer edge. Since there are two of them, we'll muliply it by 2: A = 2(πr² - πr²) A = 2(π(24)² - π(20)²) A = 2(576π - 400π) A = 2(176π) A = 352π in² Now add them all togheter: 5760π + 4800π + 352π 10912π in² If you want it in ft², divide it by 12²: (682/9)π ft²

Any Boat and Marine Shop where they sell boats will help you order it if they do not have it in stock