plumbing o rings & seals
d.i.d 520nz super non o ring chain 116 link
ul br & x9 ; li super heavy duty chain with dai hard dha a very hard chromium carbide br & x9 ; layer li br & x9 ; li surface treatment on pins li br & x9 ; li greater wear resistance and anti oxidation performance providing under br & x9 ; critical conditions li br & x9 ; li solid bushings and quad riveted pins li br & x9 ; li 520 nz chain is black li br & x9 ; li average tensile strength 8050 lbs li br ul