O-RINGS: The o-ring is the most widely used seal in industry today. It is simple in concept, easy to install, can be used as a double-acting seal, can seal pressure to over 5,000 PSI in static and dynamic applications and, best of all, is very economical. While simple in concept, it can be very sophisticated in its application. An extensive range of sizes and compounds of o-rings are available from stock or we will fabricate your special engagement. O-ring kits are also available offering a wide range of standard sizes.