Seat for air valves

摘要

An improved seat for air valves and combination air release and air valves is provided. The improved seal for an air valve has a resilient member with a top surface and a bottom surface and a through hole therebetween; a circular raised bead positioned on the top surface having a diameter larger than that of the through hole and a circumferential slot arranged in the through hole; and having a diameter larger than that of the through hole so that a lip is formed between the bottom surface and the circumferential slot. In addition, a seal for an air valve having a resilient member with a top surface and a bottom surface and a through hole therebetween; a circular raised bead positioned on the bottom surface, the circular raised bead having a diameter larger than that of the through hole; and a notch circumscribing the through hole and having a diameter larger than that of the through hole so that contact surface is formed between the notch and the through holes is also provided. The seal is preferably a hard elastomer of up to approximately 90 durometer.