Products

Zhejiang Guoming Rubber Technology Co., Ltd. makes automotive connector sealing parts — that is our main business. We have our own mold workshop, and our production runs under the IATF 16949 quality system. Every batch is tested to ISO 14000 standards, so the quality you get in the first order is the quality you get in the tenth.

The Black Silicone Wire Harness Seal is a black silicone sleeve we make for automotive connectors. The wide end has two openings, so two terminals or wires can go through at the same time — once fitted, it keeps water and dust away from the connection point. It is produced by Zhejiang Guoming Rubber Co., Ltd., a factory that specializes in connector seals and supplies them in large quantities. OEM and ODM orders are both welcome.

The HQ-235 Black Connector Seal is a double-flange rubber grommet made for routing wires through panels — doors, dashboards, engine bays and equipment housings. The two flanges grip the panel from both sides while the center opening lets the harness pass through cleanly, protected from sharp edges, vibration and moisture.

The Blue Rubber Connector Seal 967056-1 is a blue silicone blind plug from Zhejiang Guoming Rubber. It seals off the unused cavities in a connector housing — the three bellows ribs grip the cavity wall firmly, keeping moisture, dust and other contaminants away from the terminals. And the support does not end at delivery: if you run into any problem during use, our team responds quickly and helps you sort it out.

Zhejiang Guoming Rubber Technology Co., Ltd. has spent years deep in the rubber sealing field, and we've learned one thing the hard way: automotive connector failures aren't caused by big problems — a single grain of dust, a drop of moisture is enough to interrupt the signal. That's exactly why we refined the 7165-1648 Gray Single Wire Seal. It may be small, but it's the last line of defense for wiring harness waterproofing and dust protection. From the engine bay to chassis routing, it works where you can't see it, making sure every signal transmits clean through. It's the ideal partner for automotive wiring harnesses and connectors — and many customers have given us great feedback after putting it to use.

Zhejiang Guoming Rubber Technology Co., Ltd. has spent years in the connector sealing space, and one thing hasn't changed: unused cavities on a connector housing are the easiest entry points for water — and the easiest to overlook. You can design the best waterproof connector in the world, but one unsealed cavity, and the whole harness loses its IP rating. The 7161-9787 Brown Silicone Seal Plug does exactly one job — plugs the holes that don't need a wire, and gives water nowhere to go.