| 摘要 |
A semi-rigid polyolefin water heater gasket is employed to increase the speed and reduce the cost of installing a urethane leakage barrier between an inner water heater vessel and an outer shell. The gasket comprises a strip of polyolefin material that is wrapped around the exterior of an inner water vessel in the space between the inner vessel and the outer shell. This gasket provides a leakage barrier secured in this space and prevents liquid urethane from flowing beyond the gasket or gas dam ring. An adhesive can bond the gasket in the gap.
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