advantage 1 perfect quality 2 thermostability 3 anticorrosion 4 the size could customized to request

1) matierials are in line with the internation standard, the modles are accurate & professional.

2) very good founction of protecting water leaking out

3)  Thermostability, anticorrosion. long life  for more than 10 years.

4) OEM, ODM service

solar vacuum tube silicon seal ring