Silence, please! Not only do you want to protect your hearing from loud work environments, you want to protect the air quality and your tools, as well. At ShopCross, we offer several Parker mufflers that can pull double duty. The Nycoil brass combination muffler and speed control is OSHA-compliant in its ability to suppress sound, but it also monitors exhaust flow. Or maybe you need to diffuse the air from your tools, or valves or pneumatic exhaust flow; then think about Parker’s NPT male aluminum silencer muffler—which also resists rust and corrosion. Need to filter out dust, dirt and particulate matter? Parker sintered bronze 80610 and 80620 will do the trick. Only you know your application and need. Please discuss them with ShopCross Customer Service.