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Flexible Connectors

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Flexible Connectors.
Any Shape. One Piece Up.

Fabric expansion joints, ventilation ducts, round bellows and fire-retardant connectors for fans, blowers, exhausts and machines — flanged, collared, zippered or sewn. Twelve standard shapes, every irregular shape built to order.

12+

STANDARD SHAPES

9

ROUND CLOSURE STYLES

1 PC

MINIMUM ORDER

24H

QUOTE RESPONSE

01 / OVERVIEW

Air Moves.
Nothing Else Does.

A flexible connector absorbs vibration, misalignment and thermal movement between ducts, fans and equipment — without transmitting force. RUIAO fabricates them from silicone cloth, three-proof coated fabric, canvas, fiberglass and rubber cloth, with steel flanges, collars or plates to match your installation.

F.1Any Shape, Any SizeRound, square, rectangular, round-to-square, reducers and irregular geometries — one piece minimum.
F.2Material for the MediumSilicone for hot air, fiberglass for exhaust, canvas for dust, rubber cloth for ventilation.
F.3Fire-Retardant OptionsFire-proof silicone and three-proof fabrics for high-temperature airflow.
F.4Easy InstallationFlanged, collar or zipper ends — zipper styles install without dismantling the line.
02 / PRODUCT CATEGORIES

Four Families.
Every Connection.

From standard flanged ducts to odd-shaped one-offs and site bins — all fabricated in our own workshop.

CAT — 01

Fabric Ducts & Expansion Joints

软连接系列

Twelve standard constructions: flanged round, wire-reinforced round, square with steel wire, round-to-square, reducers, cloth sleeves, ventilation ducts and irregular shapes. Any geometry to order.

12 SHAPESANY SHAPE CUSTOMMOQ 1 PC
CAT — 02

Round Fabric Bellows

圆形软连接 · 9种收口

Round telescopic bellows for shafts, screws and small ducts — steel-ring collar, conical, variable-diameter, PVC-flange zipper, heat-resistant zipper, sewn velcro, canvas zipper, bound canvas and three-proof zipper.

9 CLOSURESZIPPER / VELCROSHAFT GUARD
CAT — 03

Fire-Retardant Connectors

防火软连接

Three-proof fabric, silicone-coated cloth, canvas and fiberglass connectors for hot air, exhaust and high-temperature ventilation — round, rectangular and plate-mounted builds.

SILICONE FABRICFIBERGLASSHOT AIR
CAT — 04

Steel Storage & Chip Bins

铁板箱 · 料箱

Heavy steel bins from the same workshop: wave-top dump hoppers, side-open, heavy-duty reinforced, leak-proof, lidded, folding, mesh and stackable versions. Non-standard builds welcome.

9 STYLESFORKLIFT READYNON-STD OK
03 / END STYLES & FIXING

Six Ways To Connect.

Sewn construction takes any fabric; steel-ring construction keeps a clean round profile with a tight inner/outer tolerance.

E.1Natural CollarPlain sewn ends — the most versatile and economical.
E.2One-End FlangeBolted flange on one side, collar on the other.
E.3Both-End FlangeFlanges both sides for rigid duct connections.
E.4Reducer (Unequal Ends)Different diameters each end — size-change in one piece.
E.5Zipper ClosureWrap around the shaft or duct — no dismantling needed.
E.6Square FlangeSquare mounting plate for box ducts and machine ports.
* FIXING METHODS A–E AVAILABLE — SEE DATASHEET OR ASK US.
04 / HOW TO MEASURE

One Diagram.
Six Numbers.

For round connectors, these six dimensions are all we need to build exactly to your line.

D.1Collar Length 1 / 2Straight length of each end collar.
D.2Collar Diameter 1 / 2Matching diameter of each collar.
D.3Inner & Outer DiameterCavity and overall diameter of the folds.
D.4Stretch LengthFully extended working length.
D.5Compressed LengthFolded length at minimum.
D.6Working Medium & TempAir, dust, exhaust — so we pick the fabric.
* SEWN = WIDE FABRIC CHOICE, TOUGH & COMPACT · STEEL-RING = NEAT PROFILE, TIGHT TOLERANCE.
05 / START A PROJECT

Odd Shape? Send a Sketch.

Dimensions, a photo of the old connector or a simple drawing — we reply with fabric choice and a quote within one working day. One piece minimum.

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