Back-up ring 45x50x1.45 PTFE

Back-up ring in PTFE with 45 mm inside diameter, 50 mm outside diameter and 1.45 mm thickness. It is fitted next to the O-ring, on the side without pressure, and stops the O-ring from being pushed into the gap between the parts when the pressure is high or the gap is large.

With pressure on both sides, one ring is used on each side of the O-ring.

Before ordering, check the three dimensions, the number of rings per groove and whether the ring must be solid or split.