DGF Engineering Limited
VerifiedFounding Member
Premium
Subcontract machining for all sectors
Plastic Machining
CNC Milling (3-axis)
CNC Milling (4-axis)
+5
Full profile, capabilities and contact available to members
Buyer categories
Plastics, Rubber & Polymers
Plastic and rubber moulders, extruders, formers and tooling specialists for production and prototype volumes.
Relevant UK suppliers
Plastics, Rubber & Polymers companies
Industrial Connected suppliers with recorded capabilities relevant to plastics, rubber & polymers.
GMM PFaudler
Verified
Core
Precision Machined Plastic Components, Semi-finished PTFE material & Gaskets
Gasket Manufacture
Plastic Machining
CNC Milling (3-axis)
+2
Full profile, capabilities and contact available to members
Contechs Materials Handling LTD
Verified
Core
Materials Handling and Prototype Services
Plastic Injection Moulding
Industrial Racking & Shelving Supply
Jigs & Fixtures
+7
Full profile, capabilities and contact available to members
How suppliers appear on this page
- Suppliers must qualify for the public Supplier Marketplace to be listed here.
- Relevance to plastics, rubber & polymers is based primarily on the capabilities a supplier has recorded.
- Where a capability match is ambiguous, it may be AI-assisted and is then administratively reviewed.
- Verification and membership badges are shown individually on each card.
- This is not an editorial ranking of the "best" companies.
Categories in this group
28 totalPlastic Injection MouldingVacuum FormingThermoformingPlastic MachiningPlastic ExtrusionRubber MouldingRubber ExtrusionSealsGasketsTechnical Rubber ProductsTooling for Plastics and RubberInsert & Over-MouldingGas-Assist Moulding2K / Multi-Shot MouldingMicro MouldingBlow MouldingRotational MouldingThermoforming / Vacuum FormingPlastic ExtrusionCompression MouldingRubber-to-Metal BondingSilicone MouldingComposites (GRP / CFRP) LayupResin Transfer Moulding (RTM)Filament WindingPultrusionFoam Moulding (EPP / EPS)Plastic Welding & Fabrication
Overview
Moulded, formed and machined polymer parts
Plastics, Rubber & Polymers covers UK suppliers producing components from polymer materials - from injection moulded plastic parts and thermoformed trays to bespoke rubber seals, gaskets and extruded profiles.
When to use
- You need volume-moulded plastic or rubber parts
- You require custom seals, gaskets or extruded profiles
- You need tooling designed and built for moulded production
- You need machined or fabricated parts in engineering plastics
What to look for
- Tooling capability in-house vs. subcontracted
- Material expertise for your application (food contact, medical, high-temperature, etc.)
- Volume capability matching your forecast
- Quality systems - ISO 9001, ISO 13485 for medical, IATF 16949 for automotive
Buying guide
How to buy plastics, rubber & polymers
Polymer parts depend on the right combination of material, process and tool. Get those three wrong and no amount of negotiation fixes the part.
- 01Confirm the polymer and grade
Specify polymer family, grade, fillers, colour, UV stability and any regulatory needs (food contact, medical, REACH, RoHS).
- 02Choose the right process
Injection moulding for volume; vacuum casting or 3D printing for prototypes; thermoforming for large thin parts; rotational moulding for hollow tanks.
- 03Plan tooling carefully
Decide on prototype, bridge or production tool, cavitation, hot vs cold runner, and where the tool will live. Tooling cost and ownership are usually the biggest commercial points.
- 04Agree validation route
For regulated parts confirm IQ/OQ/PQ, PPAP or equivalent. For commercial parts a sample approval drawing is usually enough.
- 05Award with a clear ramp
First-off, capability run, then full production. Build a buffer into the schedule for tool tuning, it almost always needs some.
Typical services
Services offered in Plastics, Rubber & Polymers
The service lines suppliers in this category typically deliver.
Plastic injection moulding (prototype to high volume)Vacuum and thermoformingPlastic extrusion and profile productionRubber moulding and extrusionCustom seals, gaskets and O-ringsMachining of engineering plasticsIn-house tool design and manufacture
Certifications required
Standards and accreditations to look for
These are the third-party certifications buyers commonly ask suppliers in this category to hold. Industrial Connected Verification is a separate check of company identity and credentials, and approved certifications uploaded by a supplier also contribute towards their Trust Score.
ISO 9001
Baseline quality system.
ISO 13485
Required for medical device plastics and rubber components.
IATF 16949
Automotive quality system for moulded plastic and rubber parts.
BRCGS / FDA 21 CFR
Food and pharmaceutical contact compliance.
ISO 14001
Environmental management for regrind and waste streams.
Typical lead times
Lead times in Plastics, Rubber & Polymers
A realistic starting point for planning. Actual lead times depend on volume, material availability, finishing, inspection requirements and current supplier load. Confirm in writing on every quote.
Tooling development typically takes 4 to 12 weeks with production starting shortly after sample approval.
Supplier checklist
How to vet a plastics, rubber & polymers supplier
Run through this checklist with any candidate supplier before awarding work. If they cannot evidence an item, treat it as a risk to manage, not an assumption to ignore.
- Press tonnage and shot-weight range covers your part with margin.
- Experience with your polymer family and any regulatory grade you need.
- Toolroom on site, or a named toolmaker for maintenance and modifications.
- Cleanroom, white room or food-safe area if your end use needs it.
- Material drying, batch traceability and process monitoring as standard.
- Quality system certified and audited (ISO 9001 minimum, sector standards where required).
- Two reference customers in your sector willing to take a call.
- Insurance, IP and NDA position confirmed in writing before sharing drawings or data.
- Commercial terms agreed: payment terms, currency, retention, delivery Incoterms.
Common mistakes
Common mistakes buyers make in Plastics, Rubber & Polymers
The avoidable issues we see most often, with the one-line fix that prevents them.
Specifying polymer by trade name only.
Fix: Quote polymer family, grade, MFI and any additives so any supplier can source equivalents.
Ignoring tool ownership in the contract.
Fix: Write tool ownership, storage, maintenance and end-of-life into the PO from day one.
Designing parts without draft, ribs or sensible wall sections.
Fix: Run a DFM review with the moulder before tool cutting, not after first samples.
Forgetting colour and surface finish references.
Fix: Sign off a physical sample plaque for colour, gloss and texture before production.
Underestimating tool tuning time.
Fix: Plan 4 to 8 weeks between first-off and approved samples for any non-trivial tool.
Supplier types
Kinds of suppliers in this category
The supplier profiles you will typically meet when sourcing in Plastics, Rubber & Polymers.
Trade injection moulders
Production moulders running 50t to 500t+ presses for OEM customers.
Toolmaker and moulder under one roof
Single source for tool build, sampling and production.
Rubber and elastomer specialists
Compression, transfer and injection moulding of rubber compounds.
Polymer machining houses
CNC machining of PEEK, PTFE, acetal and other engineering plastics.
Example projects
Example projects in Plastics, Rubber & Polymers
Representative briefs and scopes buyers post in this category.
Production of 50000 high density polyethylene bottles for chemical packaging applications.
Custom silicone gasket moulding for marine engine sealing featuring high temperature resistance.
Precision CNC machining of PEEK components for medical device prototype testing.
Short run vacuum forming of recycled ABS covers for industrial machine guarding.
Procurement guidance
Buyer & supplier guidance
For buyers
What to include in your brief
- Specify the required polymer grade and any necessary additives or colourants.
- Provide 3D CAD files in STEP or IGES format with technical drawings.
- State the annual volume requirements and desired batch sizes for production runs.
- Detail any critical tolerances or surface finish requirements for the final part.
Common certifications
ISO 9001ISO 13485 for medical devicesIATF 16949 for automotive componentsAS9100 for aerospace polymersBPA free and REACH compliance certificates
Typical lead times
Tooling development typically takes 4 to 12 weeks with production starting shortly after sample approval.
Procurement considerations
- Evaluate mould tool ownership terms and storage maintenance responsibilities within the contract.
- Assess material suitability for specific operating environments including chemical and UV exposure.
- Confirm whether the Supplier offers in house finishing such as painting or assembly.
- Review the environmental impact and availability of recycled or bio based polymer alternatives.
For suppliers
What buyers expect in your profile
- Showcase specific case studies highlighting complex geometry or material challenges solved.
- List all machinery capacity including maximum shot weights and platen sizes.
- Highlight in house tool design and repair capabilities to reduce downtime.
- Demonstrate quality control procedures including CMM reporting and material batch traceability.
Recommended certifications
ISO 9001 Quality Management SystemsISO 14001 Environmental Management SystemsUL Certification for electrical component housingFDA approval for food contact polymer products
Capability information to show
- Multi cavity high volume injection moulding experts
- Precision CNC machining of engineering grade plastics
- Complex rubber to metal bonding and overmoulding
- Large scale rotational and vacuum forming solutions
Buyer FAQs
Buyer FAQs for Plastics, Rubber & Polymers
Should I own the tooling?
For production parts you usually pay for and own the tool, even if it lives at the moulder. Make this explicit in your contract.
What volume justifies injection moulding?
Typically a few thousand parts and up. Below that, 3D printing, machining or vacuum forming is often cheaper because tooling cost dominates.
Can one supplier do rubber and plastic?
Most specialise in one or the other. For mixed assemblies, post a single project and let suppliers tell you what they can cover.
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