Hengoseal – Trusted by 1000+ Clients in Automotive, Hydraulic & Industrial Fields
We’ve been supplying sealing solutions to global markets for over 20 years, serving industries from automotive to hydraulics with proven reliability.
We keep ready inventory of popular sizes for O-rings, automotive oil seals, hydraulic and pneumatic seals.
Whether you need 1 piece for testing or 10,000 for production, we support flexible orders with no minimum quantity required.
As a rubber seal manufacturer, we control every step in-house — from rubber mixing and molding to vulcanization, inspection, and packaging — ensuring stable quality and fast lead times for global buyers.
We work with small workshops and global buyers alike. Here’s what some of them say after using our O-rings, oil seals, and hydraulic seals in real projects.
"We received the O-rings. They are good quality and the size fits well. We’re planning to order more. Also interested in TG4 oil seals."
"We tested the oil seals on two Toyota axle jobs. No leak after install. Fit is okay. Will check more models later"
"The surface of the O-rings is very smooth. Honestly, they look better than what I bought from my last supplier. Thanks for your service“”
Need a custom size or a quick price?
Send us your requirement, and we’ll reply within 12 hours.
We support 1-piece orders and fast global shipping.
Seal rubber is an elastomeric material used to block fluid or gas leakage between two surfaces. It is flexible, pressure-resistant, and commonly shaped as O-rings, oil seals, or gaskets.
Rubber seals are made from various elastomers depending on use:
BNR for oil resistance
FKM (Viton) for heat and chemical resistance
EPDM for steam and outdoor use
Silicone/PTFE for food-grade and medical applications
Most Chinese rubber seals use international-grade materials such as NBR, FKM, EPDM, and silicone. At Hengoseal, we only use certified compounds (ROHS/REACH compliant) with full material traceability.
Yes. China is one of the largest producers of rubber seals globally. Hengoseal is one of the trusted seal factories, offering export-ready sealing solutions with stable supply and competitive pricing.
At Hengoseal, rubber seals are made in-house through a full process: rubber mixing, mold making, compression molding, vulcanization, precision trimming, and final inspection. Each step follows strict quality control to ensure consistency and durability.
Hengoseal is a leading rubber seal manufacturer in China, specializing in O-rings, automotive oil seals, hydraulic and pneumatic sealing kits. We export to 30+ countries with no MOQ and custom mold support.
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