Engineering Plastic Products & Custom Parts

We offer five high‑performance plastic families, delivering a complete technical workflow: from defining material performance targets to component design based on your drawings.Source custom PEEK, PPS, PI, PEI and PAI components via our streamlined review process. Select your material, match a component manufacturing route, or submit drawings for technical assessment.

5

High-performance materials

1-2days

Cut-to-size lead time from

1pc

MOQ

MTC

Mill cert & batch traceability

short answer

Start with your material specification, part geometry or drawing requirements

The right custom component route is not determined by material grade alone. Plate parts, turned components, sleeves, insulators and prototypes need tailored controls for bores, flatness, wall thickness, surface finish and inspection. Great Plastics aligns material selection, geometry and manufacturing specs prior to quoting.

Choose a material

Start here when the performance requirement is already known — temperature, chemicals, load, wear or electrical needs point to one of our five material families first.

Choose a component route

Start here when the part geometry is clear, such as a plate, turned part, sleeve, insulating component, printed trial or drawing-based custom part.

Send a drawing

Start here when the target is a finished custom component — attach the drawing, CAD file or sample photo to the RFQ form for review.

Component selection path

Choose the Custom Component Route That Matches Your Project

Each component fabrication route carries unique quotation considerations. Use the RFQ focus listed on each card to prepare the technical data we require for review, prior to issuing quotes for your PEEK, PPS, PI, PEI and PAI custom parts.

CNC Milled Plastic Parts

For plate-style parts, panels, pockets, holes, slots, insulating blocks and flat machined components.

MATERIAL SCOPE：

  • PEEK, PPS, PI, PEI and PAI only
  • Grade and blank availability confirmed per drawing

Turned Plastic Components

For bushings, pins, rollers, spacers and cylindrical parts where OD, bore and concentricity affect quotation.

MATERIAL SCOPE：

  • PEEK, PPS, PI, PEI and PAI only
  • Diameter, bore, finish and inspection reviewed before quote

Sleeves, Bushings & Hollow Components

For sleeve-like or hollow parts where OD, ID, wall thickness, bore finish and inspection requirements drive feasibility.

MATERIAL SCOPE：

  • PEEK, PPS, PI, PEI and PAI only
  • Hollow route confirmed against geometry and machining allowance

Custom Plastic Parts Made to Drawing

For parts with 2D drawings, 3D CAD, samples or defined application requirements that need a project-specific review.

MATERIAL SCOPE：

  • PEEK, PPS, PI, PEI and PAI only
  • Prototype, sample and production stages handled as RFQ options

Choose your material

Select from Five High-Performance Plastic Families

Material suitability is determined by the specific polymer grade, operating conditions and component requirements. Use these cards to kick off your initial technical review, with final grade confirmation completed during the quotation phase.

Stacked high temperature PEEK plastic sheets with machined edges

PEEK

Prioritize for balanced heat, chemical, wear and mechanical requirements.

CONFIRM BEFORE QUOTE:

Grade, filler, operating temperature, chemical exposure, load, tolerance and blank route.

Custom PPS components are CNC machined from selected grades according to customer drawings and specifications.

PPS

Prioritize for chemical-contact, low-moisture and dimensional-stability requirements.

CONFIRM BEFORE QUOTE:

Chemical media, temperature, dimensional target, quantity and machining or molding route.

PI sheet, rod, and CNC machined components supplied for industrial and OEM applications.

PI

Prioritize for specialty high-temperature, wear, vacuum or insulation requirements.

CONFIRM BEFORE QUOTE:

Temperature profile, friction or wear conditions, environment, dimensions and grade data.

PEI-Polyetherimide-plastic-parts

PEI

Prioritize for heat, rigidity, electrical insulation and dimensional-stability requirements.

CONFIRM BEFORE QUOTE:

Electrical needs, temperature, mechanical load, dimensional control and drawing details.

PAI

Prioritize for high load, wear, rigidity and precision component requirements.

CONFIRM BEFORE QUOTE:

Contact load, wear mode, heat, moisture conditioning, tolerance and inspection needs.

Review process

How We Review Your Part Before Quoting

Send us the drawing or the key dimensions, and we will work out the right material, the right starting stock and a price — usually within one business day.

  1  

Material Fit

Confirm whether PEEK, PPS, PI, PEI or PAI is the right starting family for the application.

  2  

Manufacturability

Review geometry, blank route, machining allowance, tolerance risk and inspection requirements.

  3  

Quote Scope

Clarify quantity, documents, packaging, delivery expectations and any sample or production stage.

Great Plastics Route

Material + Shape + Drawing Review

Many engineering plastic RFQs arrive with incomplete data: a material grade without dimensional specs, a drawing lacking the correct blank manufacturing route, or application requirements with no confirmed polymer selection. We consolidate these technical details prior to quotation, making your enquiry simpler to assess, benchmark and progress.

Material Target

PEEK / PPS / PI / PEI / PAI

Start from the specified family or share the temperature, chemical, load, wear or insulation requirement.

Component Route

Shape & Machining Allowance

Match the part to a plate, turned, hollow, prototype or drawing-based custom route before price comparison.

Quote-Ready Request

Critical Details

Clarify dimensions, tolerances, surface finish, inspection, documentation and delivery expectations.

Uncertain which fabrication route suits your part? Submit your material target, dimensions and service conditions for a preliminary low-effort technical review before requesting a formal quotation.

Buyer questions

Frequently Asked Questions

Great Plastics focuses on PEEK, PPS, PI, PEI and PAI custom plastic parts. Grade, size, availability and manufacturing route are confirmed for each project.

Yes. You can send 2D drawings, CAD files, sample photos or application requirements through the contact page so material fit, manufacturability and quote details can be reviewed.

Share temperature, chemical exposure, load, wear, electrical, dimensional and cleanliness requirements. We use those conditions to review whether PEEK, PPS, PI, PEI or PAI is the better starting point.

Send drawings, CAD or samples; material grade and operating conditions; quantity, key dimensions, tolerances and inspection requirements; plus delivery, packaging and document expectations.

Yes. The review can cover material selection, part geometry, machining route, tolerance risk, inspection needs and the information required for a clearer quotation.

Tolerance, inspection scope and documents are confirmed by drawing, material, geometry and application requirements. Public page wording does not replace project-specific confirmation.

Use the contact page to submit drawings, CAD files, sample photos or application requirements for a custom parts quote and material review.

Have a Material Requirement or Custom Part Drawing?

Send your drawing, sample or application requirement.

Great Plastics can review material fit, manufacturability and the quote details needed for your custom plastic parts project.