Custom engineered polymers · Fountain, Colorado · Since 1963

Other suppliers said no. That's where we start.

RMB is the custom thermoplastics manufacturer that formulates the material and makes the part under one roof — rotational lining, rotational molding, laser sintering, and custom compounding — for engineers whose parts can't fail.

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Operator at a rotational molding machine on the Fountain, Colorado floor
  • AS9100 Rev D
  • ISO 9001
  • ITAR
  • CMMC Level 2
  • ASME
  • ISO Class 7 Cleanroom
  • Made in the USA

Start with your world.

Every industry asks the material a different question. Pick yours — we'll take it from there.

Aerospace flight hardware

Aerospace & Defense

Weight, flammability, and traceability — on parts that have to fly.

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Chemical processing vessel

Chemical Processing

Concentrated acids and caustics at temperature — without re-lining every five years.

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Lined pipe spools on the Fountain floor

Oil & Gas

Saltwater, brine, and microbial corrosion that eats through steel.

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Lined flange for acid service

Mining

Sulfuric acid service where liners fail and downtime is billed by the hour.

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High-purity fluid handling manifold

Semiconductor & High Purity

Contamination-free fluid handling, molded and assembled in an ISO Class 7 clean room.

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Most manufacturers buy it off the shelf. We engineer ours.

RMB formulates the polymer and manufactures the part. Nine times out of ten, your problem is a materials problem: temperature, pressure, chemistry, purity. We formulate, compound, and grind our own resins — then build the part from them.

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Fluoropolymer-lined flange
Material family

Fluoropolymers

PFA, ETFE, PVDF — chemical resistance at temperature.
Polyolefin-lined caisson
Material family

Polyolefins

HDPE, polypropylene, and engineered blends — including RMB BIO-ARMOR™.
Laser-sintered flight hardware
Material family

Additive Manufacturing Grades

Nylon 11, PA12, PEEK / PEKK, PVDF — flight-ready sintering and SLA grades.
Blue resin pellets
Material family

Custom & Engineered-to-Spec

Don't see it? Compounded, ground, and engineered to your requirement.

The RMB Path — Problem. Polymer. Performance.

  1. Engineer reviewing an inquiry

    Tell us what's failing.

    Send the application through the form, or talk directly to an engineer. Incomplete information is fine — we'll ask the right questions, and you'll hear back fast, typically the same day.

  2. Design review and material selection at the bench

    We engineer the solution together.

    Material selection — or a custom formulation — plus design for manufacturability, drawn from six decades of polymer engineering. Straight answers on fit, alternatives, and trade-offs.

  3. Spark-testing a finished liner

    We build it, prove it, and deliver it. Complete.

    Fabricated, lined, molded, or printed; machined, tested, certified, painted, and shipped — by one accountable partner, on the date we promised.

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How we solve it.

The material decides the method. Whichever it is, it's made here, tested here, and shipped under one PO.

The problems we said yes to.

Different industries, one method: identify the material, engineer the part, prove it before it ships. Look past the industry — the material science may be your answer too.

Relined quartz-processing vessel
IndustrialRotational lining

Seamless Liner Increases Quartz Processing Vessel Service Life Over 450%

A quartz-processing vessel that wore out on a schedule was relined seamless — and its service life increased more than 450%.

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Offshore platform with lined flowline
Offshore / Oil & GasRotational lining

Shell Cuts Mars B Costs with RMB Products' Corrosion-Resistant Rotational Lining Solution

Corrosion-resistant rotational lining helped Shell cut costs on the Mars B deepwater program.

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ETFE-lined pipe on a concentrated acid line
MiningRotational lining · ETFE

ETFE Rotationally Lined Pipe Delivers Long-Term Corrosion Protection in Copper Mine's Concentrated Acid Operations

Concentrated acid service at a copper mine, protected long-term by ETFE rotationally lined pipe.

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Bring us your problem. We'll take it from here.

No project is too early or too small.

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Thanks — an engineer will be in touch.