PRECISION RUBBER MOULDING
As detailed earlier in the brochure an enquiry for rubber mouldings can be raised for
many reasons. Our wealth of experience, manufacturing for all industries, will assist in
either new design or replacement of existing parts that do not meet your expectation in
quality, cost or performance. The scope of mouldings we are able to offer has developed
largely on our customers requirements. The products we supply vary in size, material,
quantity and tolerance, resulting in the development of our considerable flexibility. Our
comprehensive range of moulding presses are built to our own modular specification,
offering full interchangeable tool loading to any press, thus giving SEP unparalleled
ability in responding to urgent requirements. Suited to small batch work as well as high
volume production, the same presses give our customers the impression they expect –
cleanliness, innovation and quality.
Typical products
- Specification moulded sheets
- All types of seals
- Special application gaskets
- Diaphragms (plain, fabric reinforced, PTFE backed)
- Bellows
- Bottle fillers
- Bushes/Coupling Rubbers
- Rubber vulcanise bonding to PTFE/PFA
- Rubber vulcanise bonding to metal
- Covering and Recovering of Rollers
Industries
- Commercial engineering
- Marine
- Food processing and pharmaceutical (FDA compliant work)
- Petrochemical
- Aerospace
References and approved status available on request
Enquiries can be raised from the customers specification, drawings, samples (new or old), or merely
a bright idea in the back of a designer’s mind. Once a mutual understanding of the
part exists (reference to our Selection and Costing of Rubber will be useful - see page 5), development
prototypes through to full production manufacturing can proceed.
Our in-house design office and toolroom is capable of creating precision mould tools
as well as quick turnaround temporary tools for one off small quantity batches. Full 2D
and 3D capability being available to produce single cavity compression tools, through to
multi-cavity injection moulds.
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TOLERANCES
Hardness is measured in degrees, Shore A or IRHD
(International Rubber Hardness Degrees) and is based on a defined indentation into the
rubber under a set load. User variation can be as great as +/-2.5°
°and +/-1.5° respectively, and differences between the two types of readings can be
significant. The general acceptable tolerance of rubber hardness is +/-5°, with improved capability of +/-2°on harder rubbers if requested.
Dimensional tolerances in rubber are generally less critical as the material deforms
readily and accommodates variations. Tighter limits can be achieved with careful
tool design and rigorous procedural control, but restricted production rates
often have a commercial cost.
Unless specified ISO 3302 generally applies.
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