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Our products are made by mechine which import from Germany and the matierials are in line with the internation standard, the modles are accurate.
the seal ring is used to seal vacuum tube and inner tank, protecting water leaking out. As follow
our seal ring has passed ISO9001, and thermostability, anticorrosion. it is exellent after used for more than 10 years.
OEM, ODM service offored.
solar vacuum tube seal ring
