The envelope is made in TFM™ 1600 with 4 mm inner diffusion barrier.
4 mm thick graphite serves as a graphite insert (SIGRAFLEX® EMAIL)
The gasket is recommended by enamel equipment manufacturers up to DN 200.
SIGRAFLEX ® EMAIL
PTFE envelope gasket
graphite (WS 3825)
Plastic, enamel or rubber-lined flanges, steel flanges
DIN 2690 / ANSI / EN 1514
Special-purpose dimensions available on request