Firefox has developed a series of rings for easy fire caulk and acoustical caulk installation.  Each ring has a specific inside diameter to match the outside diameter of the penetrating object needing a complete seal.  Each ring is constructed of 2 solid pieces that are connected with our patented T-Loc system.  
 
Order a set of rings or individually.  
Use the provided ring key to find the right ring for the job.  
 
Product specs;
- Deisgned for light weight ease of use, each ring is made of 5mm thick polymer filament.  
- Caulk tube inserts are angled 25 degrees for easy application and access.  
- Application rings have a no stick finish on the wall side to allow for a smooth finish.  
- Each ring is numberd to match the product key.  
- 5mm holes are located at the top of each half for storage on the provided stainless steel wire cable.