YA type

YA type hole shaft dual-purpose seal is the forging industry standard of the former Soviet Union and the reference standard of the domestic forging industry in the 1950 s. Due to the irrationality of some of its designs, it is very unsatisfactory to use. Therefore, the company specially designed a set of special seals for pistons and piston rods without changing the original groove size, thus improving the sealing effect and service life, for details, please refer to NKS type of piston special seal and NZS type of piston rod special seal of our company. Therefore, our company does not recommend users to choose YA type series when designing new products. This YA type is only provided for specific maintenance markets. We hereby inform you.