Features
- Bonded Dowty Washers
- Tensile strength of steel 540 MN/m2 min.
- Colour passivated to DEF 03-33
- A rectangular section, metal washer, with a trapezoidal shaped ring of vulcanised nitrile rubber bonded to the inside.
- The seal is for use in high pressure environments where copper washers are unsuitable. Sometimes equipped with a thin additional membrane to assist in self centralising the seal over the BSPP thread during installation.
NotesPlease note the recommended installation arrangement
Material
- Two versions: Mild steel zinc plated and 304 Stainless Steel
- Steel BS1449 Part 1: 1983 CS4 BRH 5
- Zinc plated to DEF STAN 03-20/1
- Rubber: NBR nitrile