paying over the certain % amount - no longer get repossessed?

Hi, just a general query, is it true, that if you pay off a certain amount on a mortgage (%) then if you fall into difficulty they cannot repossess the house? if true, what is the % ? any links? thanks

Lower And High Temperature Pipe

ASTM A106 Seamless Carbon Steel Pipe 1. Union Victory supply ASTM A106 Seamless carbon steel pipe for high temperature service. A106 pipes are particulary suited whenever the trasported fluid has either high temperature or high pressure (or both combined).