Precision silicone overmolding · drawing review → sampling → volume
Eight service blocks covering design, tooling, moulding, finishing and volume supply, plus two cooperation models: direct purchase of production, or an optional advisory service for customers who keep their own manufacturers.
This page covers the capability itself; for the full path from scope and materials to working models and sample-to-volume, see custom silicone manufacturing.
A silicone part that has to survive assembly, testing and volume production depends on more than pressing rubber: the structure must be mouldable, the compound must match the duty condition, tooling and process must agree, and the batch must stay stable.
We split the work into eight blocks that can be ordered separately or as a whole chain, so a customer only buys the part of the chain they lack.
Service blocks
Each block can be ordered alone or combined with its neighbours into a full programme.
Product design from concept, solving structures that cannot be moulded, appearance that looks generic, and files that cannot be manufactured.
Charged by: project fee for design work; packaging and physical material at cost.
Custom silicone compounds and processes based on duty condition, performance target and market requirements.
Charged by: project fee for development and sampling; compounds and primers supplied by volume.
Tooling for prototype and volume production, matched to the moulding method so that tolerance and yield hold up.
Charged by: mould quoted by structure and cavity count; ownership and storage agreed in the contract.
Compression, LSR injection, potting, blow moulding and composite moulding of silicone with metal, plastic and PCBA.
Charged by: quoted per part by process route, cavity count and finishing steps.
Yield and unit cost are usually decided by process detail, not by the machine alone: venting, cure profile, demoulding and take-out automation.
Charged by: project fee, or included in the supply agreement for direct purchase projects.
Volume production with quality control, plus supply-chain coordination for customers who need several part families from one window.
Charged by: part price including material, processing and manufacturing margin; see the cooperation models below.
Documents that a product needs before it can be listed: material reports, testing, factory audit support and IP filings.
Charged by: per report or per project; third-party fees passed through at cost.
Shop-floor skills are the constraint in silicone: press setting, compound mixing, colour matching, inspection and dispensing.
Charged by: course and headcount for training; referral terms agreed per case.
Cooperation models
Most silicone factories mould to a drawing and stop there; few review the risk before tooling. When an overmolding or bonding scheme is wrong, the tooling, samples, reliability testing and development weeks all become sunk cost.
AAASIL offers two equal routes. The choice follows your supply chain and where responsibility should sit — not the price level. Both routes run through the same engineering review standard.
We open the tooling, manufacture and carry quality, delivering finished overmoulded parts in one chain.
Suited to: customers who want one responsible party, a single window and a simpler supply chain, or whose structure and process are already settled and who need stable manufacturing.
Drawing review, material selection, process route planning and supplier follow-up, catching risk before it becomes an expensive trial-and-error bill.
Suited to: customers with an existing supplier base or a multi-site capacity plan who lack in-house silicone process judgement; also overseas buyers building a controllable local supply chain.
Same engineering review standard: material selection and process assessment do not change with the commercial model.
| Item | 01 Custom production | 02 Pre-project review |
|---|---|---|
| Our role | Manufacturer | Technical adviser, not the manufacturer |
| Who produces | Our own lines and tooling | A supplier chosen by the customer or recommended by us |
| Quality and delivery responsibility | Carried by us | Carried by the manufacturing party; we own the technical route and coordination |
| Cost structure | Part price (material, processing, manufacturing margin); no advisory fee | Technical start-up fee plus a per-batch advisory fee |
| Technical resources needed from the customer | Low; single acceptance interface | Involvement at key decision points; technical judgement provided by us |
| Typical situation | Concentrated responsibility, simplified supply chain, faster ramp | Existing supplier base, technical gatekeeping or multi-site capacity |
Neither model is positioned as better: the choice follows the customer's supply chain structure, in-house capability and preferred split of responsibility, not the price level.
Standard model: technical start-up fee plus a per-batch fee.
The advisory service covers the technical solution, supplier screening and process coordination only. Final product quality and delivery responsibility rest with the manufacturing party. We do not replace the manufacturer's quality responsibility as an adviser, and we do not guarantee a manufacturer's capacity or lead time.
For how the models play out in practice, see direct purchase or advisory supply chain: which responsibility structure fits and how advisory fees are calculated and settled. The model is confirmed before quotation; a mid-project change is re-assessed and re-quoted. The full deliverable list and inquiry form are on advisory supply-chain service; tool ownership and sample fees on sampling and tooling rules; file handling on confidentiality and NDA.
FAQ
In direct purchase we are the manufacturer: we open the tooling, produce the part and answer for quality, dimensions and lead time, and the part price includes material, processing and manufacturing margin with no advisory fee. In the advisory model the part is made by a manufacturer the customer selects; we provide material justification, process route planning, risk assessment, supplier checks, sample follow-up, trial control, first-article coordination, order follow-up and quality issue coordination, while final quality and delivery responsibility stays with the manufacturer.
A technical start-up fee is charged at signing for drawing review, preliminary study and supplier screening, and is creditable against later fees. The advisory fee is 10% of the ex-tax value of each accepted batch, excluding mould cost, freight, third-party testing and duties. Each batch is settled after acceptance, offset first against the start-up balance; the start-up fee is non-refundable if the project does not reach volume.
Yes. The advisory service is optional and does not change the product price or delivery terms. Sample orders carry no advisory fee, and material and process assessment follow the same criteria in both models.
Yes. Design only, sampling only, tooling only, moulding and finishing only, or volume supply only are all possible, and the remaining blocks can be added later without restarting the technical file.
Tell us the stage of the project (concept, drawing, sample or volume) and the problem to solve; we will propose the service combination and the sequence.