Comcast Urethane Corporation is a custom molder of integral-skin urethane, flexible polyurethane foams, reaction-injection-molded components, and structural inserts. From ergonomic grips and interior cab operator padding to equipment housings, we build the parts engineers reach for when plastic and rubber fall short.
Proudly made in the USA
Polyurethane is the most versatile elastomer in engineering. We've built our whole shop around it — the chemistry, the molds, the finishing — so you get a part that fits your application, not a process looking for a problem.
A dense, durable outer skin and a cellular foam core, formed in a single pour. Feels solid, cushions internally. The go-to material for ergonomic grips, armrests, medical housings, and equipment enclosures.
Integral skin detailMolded flexible polyurethane foam, 6–16 lbs./cu.ft., Shore A 30–60. For seating, cushioning, positioning pads, and impact absorption.
Flexible foam capabilitiesHigh-pressure impingement mixing and closed-mold injection for parts requiring tight tolerances, complex geometry, and Class A surface finish.
RIM process detailThreaded studs, mounting plates, and structural cores molded in at pour time. One-piece assemblies that outperform bonded joints.
Insert moldingWe formulate and blow our foam with non-ozone-depleting pentane — finer cells, tighter density control, better integral-skin formation where it matters. We also use water-blown systems where the application calls for it. Michigan Title V permitted, explosion-rated equipment.
Why we use pentaneEngineers specify integral skin when a part needs to look finished, feel comfortable, cushion on impact, and last in service — all from one molded piece.
A tough, self-formed outer layer with a smooth surface and excellent abrasion resistance — no secondary coating needed.
A cellular interior that cushions, dampens, and insulates. Same chemistry as the skin, no interface to fail.
Skin and core form together in the mold. No lamination, no assembly — a single continuous part.
Complex shapes, undercuts, integrated fasteners, color-molded finishes — all produced in one operation.
Excellent tear, flex-fatigue, and UV-resistant variants. Often specified for 10-year-plus product lifetimes.
Any product that needs an ergonomic, cushioned, or structurally functional urethane part is our customer.
Six wheel chock profiles from 4.5″ aircraft to 25″ mega, plus five cable and hose crossover styles. Safety orange standard, custom colors available.
Cab padding, operator comfort pads, armrests, back padding, and equipment housings built for industrial environments.
Armrests, arm caps, seatbacks, and molded seating components for office, institutional, and contract markets.
Armrests, console pads, shift-knob covers, interior trim — soft-touch urethane for low-to-mid volume programs.
Ergonomic grips, patient-contact pads, equipment enclosures, and imaging-cart bumpers. Biocompatible formulations.
Bike saddles, exercise-equipment pads, kayak accessories, and impact-protection gear. Weatherable formulations.
Five milestones, one deliverable: a qualified part you can release to production.
Geometry, process selection, and fit-for-purpose evaluated.
We work closely with a mold manufacturer located in Marshall and handle the mold construction process from design to production parts — or we run production from a mold you supply. First sample parts in 6–8 weeks; production tooling timelines vary by size and complexity.
Polyol system selected or custom-blended for target hardness, skin thickness, density, and service environment.
Meter-mix-inject or meter-mix-pour, demold, and post-cure to full properties.
Dimensional and quality inspection.
Made in Marshall, MichiganOur shop has run continuously since 1982. The operators pouring your parts have been doing this for years. That's not a marketing line — it's why our scrap rates are low and our repeat customer rate is high.
Molded urethane wheel chocks and cable crossovers, produced in Marshall, Michigan. Standard profiles ship from existing tooling. Custom programs built to your dimensions or from a mold you supply.
Six standard profiles from a 4.5″ aircraft chock to a 25″ mega chock, plus fully custom programs. Molded to a drawing — not cut from a commodity slab.
Five standard styles covering bottom tunnels, circular tunnels, and top-access designs for quick line changes. Traction cleats on the top surface prevent slippage.
Rated for light traffic and slow-speed applications only.
Rubber deforms, cracks in cold weather, and absorbs oil and fuel until it fails. Integral-skin urethane resists hydrocarbon fluids, holds its shape across a wide temperature range, and survives years of outdoor exposure without hardening or cracking. The dense skin resists abrasion and UV; the foam core absorbs impact when a tire rolls over a chock or a cart crosses a cable run. Both product lines are molded from the same chemistry.
Chocks: single-piece wedge, dual-wedge pair, wide-base aircraft profile, and studded off-road. Crossovers: single or dual bottom tunnels, circular tunnels with PVC or steel lining, and top-access designs. Custom logo plates emboss branding into the standard wheel chock mold.
Aircraft ground support, airport ramp equipment, heavy construction and mining vehicles, rail maintenance, warehouse and dock equipment, and oil field vehicles. Crossovers add outdoor events and stage production, film and broadcast, construction sites, and utilities work.
Start with a tire width. We'll recommend a profile, confirm the material spec, and return a quote with lead time. Standard profiles ship from existing tooling in 3–4 weeks. Custom programs are built to your dimensions — or we cast from a mold you supply.
Request a Wheel Chock QuoteStart with your cable run and style. We'll confirm tunnel configuration, lining, and section count, then return a quote with lead time. Sections up to 4 feet at roughly 10 pounds per foot, with interlocking feet and ground anchoring available.
Request a Crossover QuoteUpload a drawing or describe your part. We respond within 1 business day — DFM feedback typically follows within 5 business days.
Request a Quote