Better Sides Seals received it's patent for the design in August 2016 and fits into most air purge plural component spray guns for foam insulation. The Delrin material stops scratching and leaking of the mixing chamber reducing down time and overhead costs while increasing production.
Better Sides Seals
![better sides seals](http://www.wconline.com/ext/resources/WC/2020/better-sides-seals.jpg?1585078959)