Custom Hot Cast Polyurethane Parts

We adapt, we improve, we produce

An OEM part that has been discontinued or priced out of reach, an invention prototype to bring into existence, an off-the-shelf product that does not last in your conditions: our specialty is to start from your part — drawing, sample or worn part — understand what it does, then reproduce it in cast polyurethane while correcting what was killing it. Better chosen hardness, formulation matched to the environment, reinforced geometry: from less than one gram to more than 2,500 lb, from 10 Shore A to 85 Shore D. Here are the families of custom parts we make regularly.

What else we mold

Eight of the most requested custom part families — and if yours is not there, we will evaluate it anyway.

Éléments d'étanchéité en polyuréthane coulé : U-cup ambre en coupe, joint torique bleu, V-ring rouge

Seals, U-cups & V-ringsSeals — molded profiles matched to your application

Réa à gorge en U en polyuréthane bleu coulé à chaud sur moyeu d'acier usiné à épaulement — la gorge ménage le câble

Pulley / grooved sheaveSheave — polyurethane groove, steel hub

Étoile d'accouplement jaune à six lobes et élément d'accouplement rouge en polyuréthane moulé

Couplings & flexible elementsCoupling spiders — hardness matched to the torque

Doublure de goulotte courbe en polyuréthane bleu foncé avec trous fraisés pour montage affleurant

Chute linerChute liner — curved to fit your equipment

Galet de guidage en polyuréthane vert à face bombée avec roulement d'acier emmanché dans l'alésage

Guide rollerGuide roller — with a bearing or a steel bushing

Diaphragme mince en polyuréthane ambre translucide à dôme et collerette percée, moulé pour pompes et vannes

Diaphragm & membraneDiaphragm — flexes for thousands of cycles

Buse conique ambre translucide et manchon d'usure rouge en polyuréthane coulé à chaud pour flux abrasifs

Nozzles & wear tipsNozzles — for sand, shot and abrasive slurries

Capuchon protecteur bleu en polyuréthane moulé sur tige filetée d'acier et gaine noire annelée

Boots & protective coversProtective covers — molded to the exact shape

Seals, sealing rings & V-rings (seals / U-cups / V-rings)

Molded sealing elements — large O-rings, U-cups, V-rings, lip seals — to contain a fluid or keep contaminants out. The high mechanical strength of polyurethane extends the life of dynamic seals compared with many rubbers, and the formulation is chosen according to the fluid and the temperature, depending on the project.

Pulleys & sheaves (sheaves & pulleys)

Grooved pulleys and cable sheaves cast in polyurethane, on their own or overmolded on a steel hub : the polyurethane groove is easy on the cable and resists wear, the metal carries the load. Groove profile reproduced from your cable or your drawing. See overmolding on metal →

Couplings & flexible elements (couplings / spiders)

Coupling spiders, coupling pads and flexible elements that transmit torque while absorbing shock and misalignment. Polyurethane can also act as the sacrificial element: it is the part that gives way, not your shafts, depending on the design.

Chute & hopper liners (chute & hopper liners)

Liners and linings, cast or cut, to protect chutes, hoppers, bins and transfer points against sliding abrasion and impact. Bolted mounting or on a steel backing, curved shapes possible depending on the geometry of the equipment.

Guide rollers & guide wheels (guide rollers)

Guide rollers, cam followers and positioning wheels, with a bearing, a steel bushing or a machined bore. A tough, quiet polyurethane working surface that carries the product along without marking it — hardness chosen for the load and the speed.

Diaphragms & membranes (diaphragms)

Molded diaphragms and membranes for pumps, valves and actuators: thin parts that flex for thousands of cycles without cracking. The tear strength and the fatigue resistance of polyurethane make it an alternative to rubber membranes, depending on the fluid and the service.

Nozzles & tips (nozzles)

Nozzles, tips and wear sleeves for abrasive flows — sand, shot, slurries, aggregates. Polyurethane resists erosion better than many metals in these services, and the part is replaced in a few minutes, depending on the design.

Boots & protective covers (protective covers)

Caps, boots, rod protectors and molded covers that protect one specific component — threads, journals, sensors — against impact, abrasion and splashes. Molded to the exact shape of the part to be protected, from a drawing or a sample.

An OEM part, an invention, an off-the-shelf product to improve? Describe your part to us →

Sheets, plates, rods and bars

Simple stock shapes cast to your dimensions, in the hardness and the formulation that suit the job — to be cut or machined afterward, at your place or ours.

Sheets & plates

Cast to the thickness you need, for liners, cutting dies, pads and parts to be cut out.

Rods & bars

Solid rods to be machined into bushings, guide rollers or turned parts, in the diameter you ask for.

Bars & profiles

Rectangular bars and simple profiles for wear strips, guides and stops to be cut to size.

Machining included as needed

We can deliver the raw stock shape or the finished part, machined to your tolerances, depending on the project.

Hardness from 10 Shore A to 85 Shore D, several colors — see the polyurethane chart →

Where these parts work

Three application families where these custom parts prove themselves — and the industries where you find them.

Conveyors & material handling

Chute liners, guide rollers, pulleys and sheaves: parts that take the abrasion of transfer points and guide the product without marking it.

See the conveyor industry →

Food, Pharma & Cosmetics

Seals, diaphragms and membranes for pumps and valves, non-marking guide rollers for fragile containers: parts that last through washdowns and repeated cycles.

See food processing →

Industrial manufacturing & equipment

Flexible couplings, wear nozzles, protective boots and standard stock shapes to machine: the support parts that keep a specialized machine in production.

See industrial manufacturing →

Questions about custom parts

My part appears nowhere on your site — can you still make it? +

In many cases, yes. Our pages present the most requested families, but custom molding covers far more ground: if the part can be cast in polyurethane within our capabilities (from less than one gram to more than 2,500 lb, hardness from 10 Shore A to 85 Shore D), we can evaluate it from a drawing, a sample or even a worn part, through reverse engineering.

Do you sell standard stock shapes such as polyurethane sheets or rods? +

Yes, depending on the project: sheets and plates, rods and bars can be cast to the dimensions you want, in the hardness and the formulation suited to the use — to be cut or machined afterward, at your place or ours.

How do I choose among all these parts and materials? +

Describe the function to us: what the part has to hold back, guide, seal or cushion, in what environment and how often. Depending on the project, we recommend the geometry, the hardness and the formulation (polyester, polyether or polycaprolactone) best suited, then we validate with you before casting.

Other custom parts in polyurethane