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.
✓ If the right material doesn't exist, we formulate it — or tell you fast that we can't.
Your industry decides the question. Aerospace asks about weight and flame. Chemical asks about permeation at temperature. Semiconductor asks what leaches. Pick the requirement and see which materials answer it.
Concentrated acids, caustics, solvents, brine — for years, not months.
What's the continuous service temperature — and what happens above it?
Will the material contaminate the process fluid or the product?
Flight-ready flame ratings, with every ounce accounted for.
Microbial corrosion in brine, seawater, and produced water.
Stiffness, impact resistance, and stability that survive service and handling.
Proprietary grades carry an RMB number — some are spec'd by name on OEM prints. 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.
There's a reason customers who need both the chemistry and the component end up here: the formulation is designed for manufacturing from day one, because the same team does both.
In-house: mechanical, rheological, thermal, and flammability testing — with hydro, spark, pressure, and leak tests when the material becomes a lining. Data sheet and traceability with the part; certificates on request.
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 →"PULL QUOTE — customer voice on finding RMB by the material name: the RMB grade was already spec'd on the print, so they came to the source. Sourced from an offshore or aerospace customer interview; anonymized per consent."
"PULL QUOTE — customer voice on moving from a loose liner to a bonded rotolined system for service-life gains. Sourced from Alan's current lining conversion project once it closes; anonymized per consent."
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 →
You don't have to commit to a project to find out what the material should be. Send one application — temperature, pressure, chemistry — and an engineer comes back with two or three candidates and the trade-offs in plain terms. Some of our longest-running programs started with exactly one question.
Where each method holds, where each fails, and the lifecycle math per method — including why bonded liners outlast loose-liner systems. Defend the decision internally.
Why pre-formed PTFE sleeves need weep holes, where they loosen, and where a bonded, seamless ETFE liner changes the math.
Read the article →Send the requirement: temperature, pressure, chemistry, purity, size. An engineer comes back with candidates and the trade-offs, not a form letter.
AS9100 Rev D · ISO 9001 · ITAR · CMMC Level 2 · ASME · AWS B2.4 · ISO Class 7 · Made in the USA
Custom thermoplastics manufacturing — engineered, formulated, and manufactured under one roof in the USA.