architecture - engineering - construction
AECinfo.com
Printable version Bookmark this page Notify a colleague or friend about this page Bookmark and Share

Introducing Isolation Bushings to prevent Bimetallic Corrosion

 

The new isolation bushing is made of black nylon and is mounted to both sides of the metal post (one per side).

Introducing Isolation Bushings to prevent Bimetallic Corrosion

The back side bushing would be held in place by the through-the-post fitting. The bushing on the inside of the post will be held in place by a dot of silicone placed by the installer.

The purpose of the bushing is to prevent dissimilar metals from touching one another. When they do, in an environment where there is an electrolyte present (like salt air), the two metals can electrochemically react to one another, causing corrosion, the most common example of which is rust, which can stain your posts.

Keeping the metals apart with this bushing can help prevent that corrosion. Drill hole size is 41/64 (21/32 is okay if a 41/64 bit can’t be located).

Drill hole size is 41/64 (21/32 is okay if a 41/64 bit can’t be located).
Order Part No. B-687-562-437

For other relevant searches, you might want to try:

(05 50 00) Metal Fabrications
(05 52 00) Metal Railings
(05 52 13) Pipe and Tube Railings
(05 70 00) Decorative Metal
(05 73 00) Decorative Metal Railings
(05 73 13) Glazed Decorative Metal Railings
  (05 73 16) Wire Rope Decorative Metal Railings
(05 75 00) Decorative Formed Metal
(06 43 00) Wood Stairs and Railings
(06 81 00) Composite Railings
(11 14 13.13) Portable Posts and Railings