nylon or vinyl crimp terminals?

I read somewhere that Nylon is better the Vinyl when using crimp terminals, is that true? If so, why? Thanks.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.