Injection-Moulded Seals & O-Rings
Injection-moulded seals, gaskets and O-rings in elastomers and engineering plastics, produced in the colour and hardness specified.
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Plastic & Injection Parts
Custom Gaskets & Sealing Rings
Flat gaskets and moulded sealing rings cut or moulded to the flange geometry, with the bore and outer diameter held to drawing.
| Part weight | 1 g – 15 kg |
|---|---|
| Mould life | Typically 200 000 – 500 000 shots per tool, by material and geometry |
| Dimensional | ±0.2 mm general, shrinkage compensated into the tool |
About this part
What it is and why it is made that way
A gasket has to seal a specific flange, so the outer and inner diameters have to be held tightly — a gasket that is oversize simply hangs outside the bolt circle. This line covers flat gaskets and sealing rings in sheet material, moulded profiles and composite laminates, produced to the geometry of the joint they seal.
- Outer and inner diameters held to the flange geometry
- Sheet, moulded and composite laminate constructions
- Cut from sheet or injection-moulded, to the quantity and geometry
- Die-cut parts with smooth, burr-free edges
Materials
- ABS and ABS/PC
- Nylon PA6 / PA66
- POM (acetal)
- PP and PE
- PVC-U
- Silicone and TPE
Production processes
- Injection moulding
- Overmoulding
- Insert moulding
- Compression moulding
- Silicone moulding
- Two-shot moulding
Typical applications
- Flange gaskets
- Housing and cover seals
- Spigot and socket sealing
- Vibration-isolating gaskets
Specification
Technical detail
The ranges below are what this shop typically holds. Anything tighter than the baseline is possible — send the drawing and we will confirm it against your specific tolerances rather than quote from a table.
| Part weight | 1 g – 15 kg |
|---|---|
| Mould life | Typically 200 000 – 500 000 shots per tool, by material and geometry |
| Dimensional | ±0.2 mm general, shrinkage compensated into the tool |
| Colour | Natural, black, white or custom Pantone — minimum order quantity applies |
| Tooling | Aluminium or steel mould; T1 lead time quoted per project |
| Diameter tolerance | ±0.2 mm outer and inner, to specification |
| Thickness | ±0.05 mm on sheet gaskets |
| Material | NBR, EPDM, silicone, PTFE, graphite laminate |
Material and finish are yours to choose. The lists above are the families this part is normally made in. We will not substitute a grade or change a tolerance without telling you first — and asking.
In the same process line
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If this is not quite your part, these are made on the same equipment with the same inspection.
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Moulded rubber bellows and suction boots that protect a moving joint from dust, coolant and impact.
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Injection-Moulded Pipe Fittings
Injection-moulded elbows, tees and reducers in ABS and PVC-U, moulded with the specified wall thickness and socket depth.
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Get a quote for this part
Send the drawing and we will quote it against your material, your tolerance and your quantity. One business day, in writing, with a lead time you can plan around.