Hongjie holds critical features to ±0.02 mm and supports compounds rated from –60°C to +325°C. Before an automotive part enters production, its resistance to 500+ fluids, gases and chemicals is tested.
This work takes place in an 11,000 m² facility certified to IATF 16949:2016, with roughly 150 employees. Across its manufacturing operations, Hongjie delivers more than 50 million precision-inspected parts each year for multiple industries.
Automotive programs typically source these part types from us:
Fixed sealing points on fuel, brake and A/C lines typically use automotive O-rings. Wiring that passes through firewalls or panels uses automotive rubber grommets to protect the harness and seal the opening.
Weatherstrips and static gasket applications are covered by automotive rubber seals. For fuel or vacuum systems that require pressure control, see custom rubber diaphragms.
No fixed minimum published — confirm order quantity with your drawing during RFQ review.
Custom mold design is handled in-house; tooling lead time and cost are quoted per part geometry once we review your drawing.
Functional prototypes ship in as little as 3–5 business days for fit and function checks ahead of production tooling.
Full PPAP documentation is available on our automotive rubber diaphragm program. Other automotive parts are supported with dimensional and material verification tied to your drawing requirements, confirmed at quoting.
NBR handles fuel and oil contact in mounts and grommets; EPDM resists UV and ozone in exterior weatherstrip; FKM survives high-temperature underhood fluids; silicone and HNBR cover extreme-temperature and coolant-adjacent parts; neoprene suits general vibration and weather sealing.
Mounts, bushings, and vibration dampers depend on a reliable rubber-to-metal bond, not just the right compound. We design and cut the bonding tooling in-house, then run hardness, tensile, compression set, and accelerated aging checks on the bonded assembly — not just the raw compound — before it's released to your line.
Tooling runs under IATF 16949:2016, with process control tracked to a Cpk > 1.33 target using statistical process control. Every automotive lot ships against these controls, not spot checks.
Send a STEP, IGES, or PDF drawing and our engineers run CAD and FEA review before quoting tooling and part cost together. Upload your drawing for a quote and we'll confirm material, tolerance, and lead time in one response.
Hongjie supplies molded, extruded, and bonded rubber components to automotive OEMs and Tier-1 suppliers in 45+ countries. Start a project discussion with our engineering team to move from drawing to sample to production.
Where the gasket sees petroleum oil, hydraulic fluid or fuel, NBR rubber gaskets are the default compound. Vibration-isolation and mounting applications are handled under custom rubber bushings.
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