This kind of seat with soft seal can be produced with three different configurations:
- Seat with Delta ring and metallic elastic ring.
- Seat with Delta ring and thermoplastic insert.
- Seat with Delta ring, metal elastic ring and thermoplastic insert.
The materials used for the construction of seats can be carbon steels, but also stainless steels. Choosing the right type of elastomer is subordinate to the scope of the valve. The Delta Ring is supplied with elastomeric materials having a hardness of 98 SH and the AED condition.