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.
Green Silicone Wire Seals are ring-shaped silicone seals with a double-lip design. They sit snugly around the wire or connector housing. Even after months of use and repeated plugging, they hold their shape and keep sealing properly — which is what keeps dust and water out of automotive connectors and wiring harnesses.
Length: 13.8mm, Width: 6.1mm, Height: 3mm (Customizable according to customer needs)
Our Production Capacity
Zhejiang Guoming Rubber Technology Co., Ltd. runs a 50,000 m² plant with a 20,000 m² warehouse. Inside, you will find 500 pieces of production equipment: 100 flat plate vulcanizers (100-ton), 300 flat plate vulcanizers (200-ton), 50 injection molding machines, and 50 liquid silicone injection machines. The line runs around the clock, 24 hours a day. With this scale, we keep unit costs low, work efficiently, and ship on time — a big reason why well-known car companies keep choosing us.
Raw Material Advantage
The quality of Green Silicone Wire Seals is decided long before molding — it starts with the material. We keep more than 100 tons of raw materials in reserve each year and manage them with a rolling-stock system, so production never waits on material and prices are not swayed by market swings. For OEM and ODM projects, we handle the whole chain — design, material selection, mold development — so you deal with one factory instead of several.
Certifications & Strength
IATF 16949, ISO 14000, and GJB 9001C-2017 — these are not wall decorations. They mean your supplier has been audited and certified for automotive quality, environmental management, and military-standard quality control, and has kept those standards for 20 years. When you buy from Guoming Rubber, you are not just buying seals — you are buying fewer audits, fewer surprises, and fewer quality risks down the line.
For inquiries about Automotive Connector Seals, Overmolded Plastic and Rubber Seals or price list, please leave your email to us and we will be in touch within 24 hours.
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