Double Mechanical Seal

Listing ID #4253229

A double mechanical seal consists of two seals arranged in a series. The inboard, or "primary seal" keeps the product contained within the housing. The outboard, or "secondary seal" prevents the flush liquid from leaking into the atmosphere.
Double mechanical seals are offered in two arrangements : 
Back to back
Two rotating seal rings are arranged facing away from each other. The lubricating film is generated by the barrier fluid. This arrangement is commonly found in the chemical industry. In case of leakage, the barrier liquid penetrates the product.