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.
Locks into the panel hole, stays in place under vibration and cable pull
Smooth center bore
Protects the harness from metal burrs and abrasion
Soft flexible rubber
Seals the opening, keeping dust and water splash out
Lightweight, no tools needed
Press-in installation, no adhesive or fasteners
Where It Is Used
Automotive: harness pass-through in body panels, engine compartment, doors and tail lamps
Equipment: cable entry on control boxes, pumps, motors and household appliances
Anywhere a wire crosses a thin metal or plastic wall and needs a clean, protected exit
Specification
Product Name
Black Connector Seal
Material
HQ-235
Color
Gray
Hardness
40±5
Performance Requirements
Tensile strength>6.86Mpa, elongation at break>400%, Compression set ≤60%
Size
Overall length:16.6 mm, Overall width:11.2 mm, Inner length:11.4 mm, Inner width:6 mm
Customization
The Black Connector Seal can be made to your drawing: bore shape and size, flange thickness to match your panel, hardness for your assembly force, and material choice for your environment. OEM and ODM orders are welcome.
About Guoming Rubber
Zhejiang Guoming Rubber Technology Co., Ltd. is a manufacturer of automotive rubber sealing parts, producing under the IATF16949 quality management system. Every Black Connector Seal batch is checked before packing — dimensions, appearance and hardness — so the parts you receive match the samples you approved.
FAQ
Q1. How is the HQ-235 installed? Just press it into the panel hole by hand. The groove between the two flanges snaps onto the panel edge and holds it there — no adhesive needed. If the fit feels tight, a little lubrication helps.
Q2. What panel thickness does it fit? That depends on your panel. The groove between the flanges is sized to the panel thickness — send us that number and we will confirm it fits, or adjust the groove to match.
Q3. Can you make it in a different size or material? Absolutely. Send over a drawing or a sample and we will work from that. Bore size, flange size, hardness — all adjustable. And the material too: if you need higher heat resistance, we can switch to silicone.
Q4. Do you offer samples before bulk orders? Sure — we ship samples first, you try them out, then decide. No need to commit before you have seen the fit.
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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