Beswick originated not only the use of an o-ring face seal in miniature pneumatics, but also the single "line contact" barb. All Beswick tube fittings feature this proprietary single-edge barb profile which, unlike traditional "christmas tree" barbs, allows tubing to be pushed onto the fitting easily by hand while also providing exceptional holding power. The Beswick barb's outer diameter is designed to make "line contact" with the inside diameter of the tubing insuring a leak tight connection. Beswick also offers the largest selection of barb sizes in the industry providing you, the customer, with the optimum barb size for use with your tubing. Other fitting manufacturers often only offer a few barb sizes and this compromise results in either over stressed tubing or a loose connection.

Our testing confirms that the Beswick barb holds polyurethane tubing beyond the burst pressure of the tubing. These tests were performed under static pressure conditions but since some applications may involve pressure pulsing, heat, vibration etc, occasionally a clamp should be considered. As a general guideline we recommend that customers consider a clamp at pressures above 80 psi and strongly recommend a clamp above 100 psi.