This professional rubber seal (O-ring/retaining ring) with precise dimensions of 32.2 x 24 x 3.55 mm was designed specifically for Raytools laser head optical systems (compatible with the 28-4 lens and cassette mounting system). This component is installed in the head socket, where it ensures cleanliness and maintains the correct auxiliary gas pressure inside the fiber laser housing.

Made of a specialized elastomer resistant to high temperatures and aging, the ring maintains optimal elasticity even during prolonged laser operation. This prevents microscopic leaks that could lead to contamination of expensive optical components. Regular replacement of the seal during optical maintenance protects the cutting head from premature wear. The product is fully compatible with popular Raytools cutting head models (including select versions of the BM109, BT240S, etc.).