I'm working on a new product idea, and I need what might be considered Jolly Green Giant size (and strength) rubber bands--although they are almost certainly not called rubber bands. These would be about 12-15" in length when stretched, and would exert perhaps 30-50 pounds of force. (Think of these as the rubber bands the Jolly Green Giant's orthodontist probably uses.) These should be able to tolerate pretty temperatures down to -10 deg. F. Any suggestions?
UPDATE: There are what are called "pallet bands" but those are even a bit larger than what I need. This company, Aero Rubber, seems to make stuff in about the right size range. I will probably have to call them and see how much force the 9" x 1/4" bands generate when stretched to 14".
Alternatively: something with a lot of elastic force and hooks at both ends--like a bungee cord, but perhaps more durable and with smaller hooks. It might even be a bungee cord, but perhaps one intended for an extreme environment application, such as the stainless steel hook variant for marine use. But contracted, it probably needs to be 8" or less, so that it produces sufficient force at 14". McMaster-Carr stocks an 8" bungee cord (with some pretty impressive hook options) that has a maximum stretch of 14". I'm not sure what the force exerted at 14" is, but these seem to be standard size of other bungee cords, and Hooke's Law would probably apply roughly the same for all these bungee cords that are made of essentially the same material.