Contact Isoklamp
An engineer reads every message and replies within two business days. If your question is whether ISOKLAMP CFR suits a specific joint, say so directly and include the numbers. We will run a VDI 2230 Sheet 1 estimate and tell you honestly if a wedge washer or a disc spring is the better answer for your case. We would rather lose a sale than place hardware in a joint it does not suit.
Tell us about the joint, not about your interest level. Bolt size and grade, target preload, what the joint clamps, what the loading looks like, and what has failed so far. That is enough for us to say something useful in the first reply.