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Hermetic Sealing & Electronic Packaging

Knowing who can make it is not the same as being able to buy it.

We source hermetic seals, feedthroughs and electronic packaging from specialised manufacturers in China — and carry the qualification, the documentation and the payment route as one accountable party.

Start an enquiry How we work

We reply to technical enquiries within 1–3 working days. We are not the manufacturer.

The gap

A sealed enclosure is only as good as the point
where the wires come out.

And sourcing that point tends to fail in two different places — most buyers only expect the first one.

First half — finding them

Most of these manufacturers are not visible.

They are small, highly specialised, and technically serious. What they usually lack is an English website, an export sales team, or any budget for being found. Their domestic order book is full, and finding foreign customers takes attention they cannot spare.

Some of them do have one or two overseas customers, usually from a relationship that happened years ago. That is not a market working. That is one relationship.

Second half — reaching them

Finding them is only half of it.

Documentation, the compliance requirements on your own side, the payment route — increasingly the question is not "who can build this" but "can I take delivery of it cleanly, and keep taking delivery of it."

Buyers who have already found their manufacturer still end up building arrangements around it. That is not a problem anyone solves with a search engine.

What we source here

Three families to start with.

Not catalogue items. Pin count, material, pressure rating and package geometry all move to fit the design.

Feedthrough

Hermetic terminals for compressors

  • Low voltage through high current
  • High-pressure service, including CO2 systems
  • Sintered glass-to-metal, not resin-potted
Connector

Multi-pin hermetic sensor connectors

  • Built to drawing, not to catalogue
  • Sensing and instrumentation service
  • Matched-expansion constructions
Package

Hermetic sensor packages & headers

  • Sensing and optoelectronic devices
  • Extreme temperature and pressure service
  • Metal-ceramic and glass-to-metal options

Typical uses: refrigeration and CO2 systems, energy storage, process instrumentation, optical communication.
We do not work on defence, radar, satellite or airborne applications.

How we work

We are not the manufacturer.
We carry the structure.

Supplier qualification

We identify and screen manufacturers who do not advertise, and we start every relationship at small volume so that a problem stays small.

Technical translation

We turn an engineering requirement into something a manufacturer can actually quote against — and we ask the questions that change the answer before the RFQ goes out.

One set of documents

One consistent export document set, issued by one accountable party, so your own compliance people are not reconciling three versions of the same shipment.

A clear payment route

You pay us. We pay the manufacturer after you pay us. One counterparty, one contract, one bank relationship.

Before we start

Three things, so you can decide whether this fits you.

  1. Product quality responsibility sits with the manufacturer. Not with us. We have no factory and no production line, so it is not something we could carry even if we wanted to. If you need the middle party to guarantee the product, you need a company that owns its own plant — and that is not us.
  2. We are paid a service fee on the order, by you. We take nothing from the manufacturer. That fee is our entire compensation, and it covers supplier qualification, technical translation, the export document set and the payment route. You see the manufacturer's quotation as it was issued to us.
  3. If you want to know who the manufacturer is, we will tell you. We do not make our money by keeping the factory hidden. If that structure works for you, say so and we will go on. If it does not, that is a fair answer.
Start an enquiry

Start with one line about what you are trying to seal.

Not a specification. Just the situation. Two ways in — pick whichever is less work for you.

Talk it through

Seven short questions. No specification needed.

1 / 7

This desk asks questions — it does not quote, and it does not confirm what can be built. That comes back from us, in writing, after we have talked to a manufacturer. Nothing leaves your browser until you press send.

Or just email — drawings attached is fine

Most engineers prefer this. So do we.

benny@primelinks.pro

Helpful to include, if you have it:

  • What the part goes into — the system, not the part
  • Medium, pressure and thermal duty
  • Pin or channel count
  • Prototype quantity, and production quantity if you know it
  • What you tried already, and why it did not work

No sample requests without an application, please — we will not be able to help.