The 7500 Series consumes 30% less power than packing seals and will not undercut shafts. Fully assembled and possessing a rugged modular design, our 7500 Series industrial seals will not leak to foul bearings or contaminate processing areas.How the 7500 Series – Rotary Shaft Seal Works
The 7500 Series Shaft Seals offered in two different versions: the 7550 which is for most powder applications and the 7520 version for slurries or very abrasive applications. The key component of the 7500 rotary shaft seal design is the solid elastomer, which is made from FDA approved silicone and can handle temperatures up to 400F degrees. The elastomer is molded slightly smaller than the shaft size so that an interference fit is achieved. It is this tight fit that seals the shaft, which stops material from migrating past, and drives the two rotating faces called “rotor cups”. The rotating rotor cups compressed against the two stationary stator plates is what creates the primary seal that stops product leakage. These dynamic seals are also air purged at 5 to7 PSI above any pressure in the vessel to assist in maintaining a positive seal.