Keep your suppressor performing at its best with the SilencerCo Delta O-Ring Pack. Specifically designed for the 22 Sparrow these high-heat-resistant Viton O-rings ensure reliable containment of blast and debris. Each pack includes (2) 13 O-rings and (2) 18 O-rings offering durability and peace of mind during use. Crafted in sleek black for function and style this essential accessory is a must-have for maintenance and longevity. Don't risk downtime-gear up with this trusted replacement kit.