On working days, we will reply to you within 12 hours after receiving the inquiry.

We are an integration of industry and trade, and we also have our own international trade department, we produce and sell ourselves.

We mainly produce seals and comprehensive accessories for tank storage and transportation equipment.

Yes, we can develop and produce products according to the drawings or samples provided by customers.

Yes, except customized products, we mainly produce standard parts.

Our factory has an area of 12000㎡ and has been specializing in the production of seals for more than 40 years.

The company has more than 200 employees and 12 technicians.

First of all, we have a strict audit system for suppliers, and the inspection of incoming materials is strictly in accordance with quality standards and specifications;
Secondly, the production process is streamlined and the process is standardized; we will have corresponding inspections after each process, and for the final products, we will do 100% full inspection according to customer requirements and international standards;
Then, we have advanced and complete testing equipment and actively submit it to third-party organizations for testing. On the one hand, it can ensure that high-quality final products are provided to customers, and at the same time, it can ensure that customers meet all-round testing requirements for physical and chemical properties of materials, non-destructive testing, and high-precision geometric dimension testing.

When quoting, we will confirm the transaction method with you. Generally speaking, it is 100% prepayment, but if the order amount exceeds 5,000 US dollars, we can apply for 30% prepayment and 70% payment before delivery.

By sea, by air, by express, door to door, etc.

Have you also encountered a situation where the oil leakage from the packing causes oil to accumulate on the wall of the tank? This issue not only greatly increases labor costs, but also affects container handling speed and even reputation.

So, why did this phenomenon occur? Let's take a look at the difference between these two Manlid Seals.

>> Reason

Based on the above, we can see that different chemical compositions fundamentally determine whether the phenomenon of “oil” will occur.

The PTFE Manlid Seal for tanks does not contain any oil in production, but ordinary fibers are easy to absorbing water. It is easy to absorb water in rainstorm, humid weather and extreme high low temperature difference weather. When the water is mixed with the impregnated PTFE lotion and under the high temperature and high pressure, the emulsifier will be diluted. This emulsifier is what we usually refer to as “ oil”.

>> Suggestion

So in areas with heavy rainfall and large temperature differences, we recommend using pure PTFE manhole packing to fundamentally solve this problem.

>> More advantages

Using pure PTFE manlid gaskets instead of ordinary ones can not only reduce after-sales and losses, but also increase the timeliness of sealing. The following is a pressure holding test experiment conducted by a Korean customer at the depot, which shows that the pressure holding time of pure PTFE manhole packing exceeds one week. And the pressure holding capacity of ordinary manlid seeal is less than one week.

What are the advantages of the pure PTFE manhole packing produced by SunPass?

Raw materials: Made from high-quality PTFE from Top 3 manufacturers such as Dongyue and Chengguang→better chemical resistance and compression resistance, and meeting food grade requirements

Equipment: Using German Style braiding machines → Weaving is tighter and has better sealing performance

Quality Management: Dual support of ISO9001 quality system and 6S on-site management → Stable quality

Why choose us?

SUNPASS SEALING TECH, founded in 1979, has 178 employees. Relying on more than 40 years of mature technology and experience, it specializes in the production of industrial sealing and thermal insulation materials. SUNPASS has a high reputation and influence in the sealing industry at home and abroad.

SUNPASS has a modern professional workshop of 12000M2, with more than 20 production lines such as graphite products, PTFE products, sealing gland packing, sealing gasket, glass fiber products, ceramic fiber products, rubber products and so on.

Customers are located in more than 200 countries and regions such as China, Kuwait, Spain, Germany, France, the Netherlands, Saudi Arabia, Russia, the United States, Mexico, Brazil, Australia, South Korea, Japan, Thailand, Egypt, Belgium, etc.

• Built on 45 years of professional expertise and experience in seal manufacturing
• Supplier to the world’s top 6 tank container manufacturers
• Superior Quality: ISO 9001 certification, rigorous internal controls, and scientific production management
• Competitive Pricing and Fast Delivery: Efficient “smart” manufacturing with advanced equipment; dedicated customer warehouses for standard products
• Customizable Solutions: A professional team of technical experts, many with over 20 years of experience