Fernco, previously know as Flexseal, is a specialist manufacturer and distributor to the civils & drainage, plumbing and water management sectors.

The company was established in 1989, with flexible couplings a key focus as much then as it is now. Growth from this product range over the years allowed Fernco to innovate other products to complement its entire product offering and expand into many different markets and countries.

With a reputation for supplying high quality products, Fernco offers a service to match and operates with a spirit of innovation across all areas of the company. Fernco’s focus is to add value to all levels in the supply chain, from builders merchants to end users of our products.


Our company name Plasitence comes from three words namely Plan, Positive & Persistence. These are the spirits when we start our business.

Plasitence Development (HK) Limited 凱信發展(香港)有限公司 is based in Hong Kong and its associated company Plasitence Trading Engineering Company Limited 凱信工程貿易有限公司 are the Hong Kong construction materials supplier mainly supply drainage and flow control products in Hong Kong and Macau.

We are the flood control expert, we can bespoke supply innovative flood preventive solutions – Self Closing Flood Barriers, Auto flip up flood barrier to suit your needs. We have more than 16 years’ experience in sales and marketing for these products in construction industry. To fulfill the customers’ needs is our prime concern, we commit what we say, and always do our best.

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