This professional rubber seal (O-ring/retaining ring), with precise dimensions of 42.5 x 34.5 x 3.2 mm, was designed specifically for Raytools laser head optical systems (compatible with the 37-7 lens mounting system). This component is installed in the socket of protective glass cassettes or lens blocks, where it ensures optimal auxiliary gas pressure and cleanliness inside the Fiber head housing.

Made of a specialized elastomer resistant to high temperatures and aging, the ring maintains optimal flexibility even during prolonged operation of a high-power laser. This prevents microscopic leaks that could lead to contamination of expensive optical components. Regular replacement of the seal during optical maintenance protects the head from premature wear and autofocus failures. The product is fully compatible with many popular Raytools cutting head models (including selected versions of the BM114, BM115, etc.).