These are replacement O-Rings specifically designed for Remington 1100/11-87 shotguns, but also compatible with various other shotgun brands like Winchester and Beretta.
The O-Rings feature a graphite coating to enhance their longevity and performance, ensuring reliable use over time.
Brownells offers these barrel seal O-Rings in 12 gauge size and they are available in packs of 3, providing flexibility in quantity based on user needs.