Tell us the temperature, the pressure, the chemistry, the purity spec. We'll match it to a resin we already run, or formulate one. Then we build the part from it — lined, molded, or sintered — in Fountain, Colorado.
Your industry decides the question. Aerospace asks about weight and flame. Chemical asks about permeation at temperature. Semiconductor asks what leaches. You don’t need to know the polymer — bring the requirement, and we’ll land on the material together.
Concentrated acids, caustics, solvents, brine — for years, not months.
Tell us the media, the concentration, and how long it has to survive.
Chemical · Mining · Oil & Gas · WaterWhat’s the continuous service temperature — and what happens above it?
Tell us continuous temp, excursions, and thermal cycling.
Chemical · Aerospace · SemiconductorWill the material contaminate the process fluid or the product?
Tell us what touches the part and what can’t leach into it.
Semiconductor · Biopharma · Medical DeviceFlight-ready flame ratings, with every ounce accounted for.
Tell us the spec — FAR 25.853, FST, OSU — and the weight target.
Aerospace & DefenseMicrobial corrosion in brine, seawater, and produced water.
Tell us the water chemistry and where the system lives.
Oil & Gas · Offshore · Desalination · WaterStiffness, impact resistance, and stability that survive service and handling.
Tell us the loads, the abuse, and the environment.
Heavy Industrial · Chemical · AerospaceProprietary grades carry an RMB number. Standard grades are processed here under the same controls. If a material isn't listed, ask; the answer is often a formulation, not a no.
■ Proprietary RMB formulation · Process: L Rotational Lining M Rotational Molding S Laser Sintering
The chemical-resistance workhorses. When the fluid is aggressive and the temperature is high, the answer is almost always here.
| Material | Process | Max Service Temp | Application | Data Sheet |
|---|---|---|---|---|
| PFA | M | 500°F / 260°C | Lining top coat, high-purity vessels and fittings, high-temperature applications, and chemical resistance. | PFA data sheet ↓ |
| ETFE | L | 302°F / 150°C | Chemical resistance, corrosion protection, excellent adhesion. Bonded and seamless — the liner behind decades of concentrated-acid service. | ETFE data sheet ↓ |
| ■ PVDF RMB 283 | M | 260°F / 127°C | Aerospace and semiconductor fluid tanks, ducts, and fittings. Excellent physical properties, low moisture absorption, excellent chemical resistance, flame retardant. Conforms to FDA 21 CFR 177.2510. | RMB 283 data sheet ↓ |
| ■ PVDF RMB 11008-3001 | M | 260°F / 127°C | Fluid tanks and molded ducts and fittings. Excellent physical properties, low moisture absorption, excellent chemical resistance, flame retardant. Conforms to FDA 21 CFR 177.2510. | PVDF 11008-3001 data sheet ↓ |
Lower cost, lower temperature, broad chemical resistance — where most of the world's lined pipe and molded tanks live.
| Material | Process | Max Service Temp | Application | Data Sheet |
|---|---|---|---|---|
| HDPE | M | 180°F / 82°C | Chemical resistance; long-term UV-stabilized high-density copolymer offering outstanding stiffness and processing. | HDPE data sheet ↓ |
| HDPE Health | M | 180°F / 82°C | High-density copolymer suitable for medical devices, with USP Class VI and Drug Master File listings. | Health HDPE data sheet ↓ |
| ■ RMB HDPE Lining Grade | L | 180°F / 82°C | Chemical resistance and adhesion suitable for linings in pipes, fittings, vessels, and irregularly shaped parts. | HDPE lining data sheet ↓ |
| ■ RMB BIO-ARMOR™ (HDPE with antimicrobial blend) | L | 180°F / 82°C | Chemical resistance and adhesion of the lining grade, plus antifouling and MIC resistance for pipes, fittings, vessels, and irregularly shaped parts in brine and seawater service. | BIO-ARMOR data sheet ↓ |
| Polypropylene | M | 230°F / 110°C | Impact propylene copolymer. Chemical resistance. | Polypropylene data sheet ↓ |
Rotationally molded polyamides formulated in-house for aerospace, defense, and heavy-industrial parts.
| Material | Process | Max Service Temp | Application | Data Sheet |
|---|---|---|---|---|
| ■ RMB 9103KO Nylon 12 | M | 220°F / 104°C | Low moisture absorption, excellent chemical resistance, high impact resistance. Fire retardant to FAR 25.853 and FAR 29.853. Natural color. Aerospace. | RMB 9103KO data sheet ↓ |
| ■ RMB 421C Nylon 12 | M | 220°F / 104°C | Low moisture absorption, excellent chemical resistance, high impact resistance. Black color. Military aerospace and food processing. | RMB 421C data sheet ↓ |
| ■ RMB 423 | M | 220°F / 104°C | Low moisture absorption, high chemical resistance, high impact resistance. Commercial and heavy-industrial applications. | RMB 423 data sheet ↓ |
| ■ RMB 1722P | M | 220°F / 104°C | Low moisture absorption, high chemical resistance, high impact resistance. Commercial and heavy-industrial applications. | RMB 1722P data sheet ↓ |
Powders for selective laser sintering: no tooling, complex internal geometry, test coupons built alongside every part.
| Material | Process | Max Service Temp | Application | Data Sheet |
|---|---|---|---|---|
| Nylon 11 (D-80) | S | 220°F / 104°C | Aerospace ducting and other complex shapes with interior features. | D-80 data sheet ↓ |
| Flame-retardant Nylon 11 (FR-106) | S | 220°F / 104°C | Ducting and complex shapes requiring FAR 25.853 60-second vertical flame testing. | On request |
In qualification: new sintering grades — PA12 variants, PK, PEKK, carbon-reinforced PEEK, and PVDF — are in testing now. Ask an engineer about availability for your application.
Most formulations we run didn't exist until a customer brought a requirement nobody's catalog met. We compound, extrude, and cryogenically grind in-house, so a new material can go from requirement to test coupon without leaving the building. Small batches are the point: the quantities the large material houses won't run are the ones we built the line for.
Most custom molders and liners buy resin in a drum and adapt the job to it. We do it the other way around. We compound, extrude, and cryogenically grind our own resins, so the material is built for the process and the part. That's why there's an RMB number on the nylon in the ECS duct and a lining chemistry with a biocide blended in when the corrosion mechanism is biological.
When you read "PFA" or "PVDF" in the tables above, you're reading about a specific grade, processed and tested here, with a data sheet that describes that grade and not a generic one.
When a formulation is too small for a large material house, it tends to end up here. Bring the requirement; we develop the formulation, prove it in the lab, and grind it to the particle size the process needs. One of the few small-batch cryogenic grinding operations in the country running quantities this size.
Resin compounding and cryogenic grinding →Compounder · Extruder · Cryogenic grinder · Mixers · Custom mesh sizes for custom particle sizes
Mechanical, rheological, thermal, and flammability testing to ensure compliance with customer specifications
Continuous temperature, pressure or vacuum, the chemistry and concentration, purity or flammability specs, size, and what the current part is costing you.
Usually two or three candidates. We explain the trade-offs in plain terms: cost against temperature, permeation against thickness, flame rating against impact.
In-house mechanical, rheological, thermal, and flammability testing; hydro, spark, pressure, and leak tests for linings. Outside labs when your spec requires it.
Data sheet and traceability with the part. Certificates available on request through the quality team.
Nobody calls us asking for a duct. They call with a temperature and a pressure. Start there, and the part follows.
See the full engineering process →Different industries, same first question. Look at the chemistry and the temperature, not the logo.
A bonded, seamless ETFE liner with no weep holes and lower permeability than the PTFE it replaced.
ASARCO case study →HDPE chemistry plus an antimicrobial blend: the corrosion mechanism was biological, so the liner had to be too.
BIO-ARMOR case study →A rotationally molded PFA construction with no seams, no crevices, and low extractables for high-purity fluid handling.
Dosing bottles case study →Sintered ducting qualified in the customer's application; tooling and machining eliminated.
Coming →All case studies →
Yes. That's how our proprietary grades started. We compound, extrude, and cryogenically grind in-house, and the materials lab runs the mechanical, rheological, thermal, and flammability tests to prove the formulation before it touches a part. Small batches are what the line was built for.
ETFE, RMB HDPE Lining Grade, and RMB BIO-ARMOR™ — with PFA as a lining top coat. Each has a published data sheet in the table above.
Nylon 11 (D-80) and flame-retardant Nylon 11 (FR-106). New sintering grades — PA12 variants, PK, PEKK, carbon-reinforced PEEK, and PVDF — are in qualification now; ask an engineer about availability.
Not exactly, and it's worth knowing why. PTFE liners are pre-formed sleeves inserted into standard pipe sizes; they need weep holes and can loosen under pressure differentials. We rotationally line with ETFE instead: a bonded, seamless layer with uniform thickness, no weep holes, and lower permeability than PTFE — applied to virtually any configuration. Read: ETFE versus PTFE →
Several are. RMB 9103KO Nylon 12 is fire retardant to FAR 25.853 and FAR 29.853. PVDF RMB 283 and RMB 11008-3001 conform to FDA 21 CFR 177.2510. HDPE Health carries USP Class VI and Drug Master File listings.
Every material in the tables above links to its published data sheet. Certificates and test documentation are available through the quality team — ask when you talk to an engineer.
ETFE, PFA, PVDF, MIC, extractables, full-vacuum rating: the materials glossary defines each term once and points you to the RMB grade that applies.
Send the requirement: temperature, pressure, chemistry, purity, size. An engineer comes back with candidates and the trade-offs, not a form letter.
Custom thermoplastics manufacturing — engineered, formulated, and manufactured under one roof in the USA.