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Packing Seal Definition
- Aug 26, 2018 -

Packing seal is also known as packing seal, commonly known as packing (Packings) seal.The packing seal is the oldest type of seal structure. In ancient water lifting machines in China, the filling of cotton yarn is used to plug leakage. The earliest steam engine in the world also adopts this type of seal.In the 19th century, the production and development of oil and gas exploitation technology led to the new development of packing sealing materials.By the 20th century, packing seals were favored by many industrial sectors for their simple structure, inexpensive price, and wide range of sources.