The CinchSeal rotary shaft seal available in UK from Wrights Dowson Group has been successful in various industries, including chemicals, food, drink, feed and grain, pharmaceutical, paper industry as well as others.

A rotary seal aims to seal bulk materials, powder, or slurries in processing equipment. A rotary seal is an integral part of the manufacturing process. Its chief purpose is to reduce product loss and ensure that spillage and/or contamination of products is avoided during the manufacturing process.

How a Rotary Seal Works

Also known as a radial shaft seal, the rotary seal works by creating a seal around a rotating shaft, such as those used in bulk handling equipment, ribbon blenders, and screw conveyors.

PTFE rotor cups made from aluminium are mounted in a silicone boot. The rotor cups are coated in a hard mineral-filled Teflon® that contains 15% of a binding agent called Wollastonite. The rotor cups turn with the shaft. This process creates the primary seal face with the stator plates.

Rotary Shaft Seal Specifications

Designed and manufactured to high specifications and standards, the rotary seal has the following specifications:

It can withstand temperatures of up to 180°F in poly housing with air purge and up to 400°F with aluminum or 316 stainless steel.

The rotary shaft seal operates at a range of different speeds depending upon which equipment it is being used in conjunction with. This includes speeds of up to 3600 rpm with a chopper seal, 225rpm with a mixer seal, and 60 prm with a screw conveyor seal. The overall maximum surface speeds are 1200 feet per minute.

The rotary seal housing is available in 316 stainless steel or aluminum, depending on the Wrights Dowson Group customer’s needs. Hastelloy C276 can also be used.

The rotary seal is easy to install and does not require any professional help for assembly or disassembly. Its design allows for it to be quickly taken apart for weekly cleaning or batch cleaning. It is available as a solid or split design.

The Advantages of a Rotating Shaft Seal

There are several benefits to the rotating shaft seal:

It is a cost-effective solution because it helps to eliminate spillages and material loss. It also has low maintenance and repair costs and does not use high levels of power when operated.

The rotary seal has a durable design built to operate in rigorous and challenging manufacturing environments, including in the bulk processing and food industries. Its resilient design means unlike other designs, it does not wear out quickly.

The rotary seal design is such that it minimizes the potential for a workplace to be contaminated.

The rotary seal designed by Cinchseal is purged either with air or silicone grease. This is to prolong the life of the seal. The air keeps the rotating seal cooler by reducing the temperature caused by friction. The air also creates pressure and pushes the rotor against the stator to prevent any material from escaping from the screw conveyor.

Learn More

The Wrights Dowson Group has an established reputation for quality design and speed of delivery. The CinchSeal rotating shaft seal can be designed to suit your particular application.

If you’re looking to learn more about rotating shaft seal products, get in touch with us at Wrights Dowson Group for a quotation and technical support, and advice.