Works well with all our DN40 (ID 38 mm) fittings.
PTFE gaskets are great when you need to rotate an installed fitting. Often you will need to tighten them a bit more than a silicone gasket to get a good seal.
- Inner diameter 38 mm
- Outer diameter 50.5 mm
- For Tri-Clamp size: 50.5 mm = 1.5"
- Temperature range -70C to 230C
These DN40 gaskets are have an appromimately 3 mm wider inner diameter than standard 1.5" gaskets.