Curtain Bellows

Curtain bellows are available in almost any size or material to meet a variety of applications or environments. Flat bellows may incorporate stiffeners to help hold their original shape and allow them to be mounted vertically or horizontally. Other options include Flanges with mounting hole patterns and Velcro strips that simplify mounting. Typical applications are to screen an area to prevent accumulation of debris in a recess or to provide protection in a single plane.

Diagrams of End Conditions

flange/flange

flange/flange

 

Mounting Hole Pattern in Flange Ends

Customers may specify the mounting hole pattern they need on the sewn fabric flange end of bellows. These mounting holes permit easy installation of bellows onto the customer’s machinery. If added mounting stiffness is required, customers may add as an option, steel back up flanges with coordinating hole patterns.

Steel Back Up Flange

Steel back up flanges are sometimes used in addition to the flange ends of way covers and bellows. These steel flanges provide additional stiffness when mounting bellows and covers to machine elements. Customers may specify a mounting hole pattern to match that of the sewn fabric flange end on the bellows.

Velcro® Strips

Velcro strips offer another option for mounting the flange ends of bellows and covers. These strips, which are attached to the flat face of flanges, are available in both cloth and plastic Velcro materials. Customers using Velcro strips do not need to specify a mounting hole pattern for flanges.

Coating (Color) Base Mat'l Nominal Thickness Temperature Range Properties Limitations
Neoprene
(Black)
Nylon .020" (.51 mm) -60° F to 250° F
(-51° C to 121° C)
Resistant to moderate chemicals, acids, oils, fats, grease and many solvents. Good weathering and physical properties, flame retardant. Attacked by strong oxidizing acids, esters, ketones, chlorinated aromatic and nitro hydrocarbons.
Hypalon
(Black or Green)
Nylon .023" (.53 mm) to .024" (.61 mm) -60° F to 300° F
(-51° C to 149° C)
Well suited for use in corrosive chemical environments. Offers additional resistance particularly against oxidizing agents like sulfuric acid, hypachlorites, high ozone, moderate chemicals, acids, oils, fats, grease and many solvents. Good weathering and physical properties, flame retardant. Attacked by concentrated oxidizing acids, esters, ketones, chlorinated aromatic and nitro hydrocarbons.
Aluminum
(Silver)
Fiberglass .020" (.51 mm) -100° F to 550° F
(-73° C to 288° C)
Excellent heat resistance and is not combustible. Will not rot or decay. Resistant to many solvents, weather and corrosive vapors. Has a 95% reflective heat property. Man-made material whose main constitute is silica sand. Begins to melt at 750° F.
Silicone
(Red)
Fiberglass .022" (.55 mm) -100° F to 450° F
(-73° C to 232° C)
Resistant to moderate or oxidizing chemicals, ozone and concentrated sodium hydroxide. Attacked by many solvents, oils, concentrated acids and diluted sodium hydroxide.
Teflon® (Brown) Fiberglass .010" (.25 mm) -100° F to 500° F
(-73° C to 260° C)
Very good chemical inertness and resistance to a wide range of fluids. Only a few rare fluids will attack Teflon. Very stiff material that is not easily adapted for very small bellows.

Request a Quote using our online Bellows Configurator. Simply click the “Request a Bellows Quote” button and choose the bellows shape, size and material. Tabs at the top of the page will guide you to select options, sizes and end conditions. A drawing will be instantly emailed to you and the quote will follow within 1 business day.