Available with either a glass or polycarbonate lens.

Each kit comes with one lens and two seals.

Available in 1″, 1-1/2″, 2″ & 3″

NOTE: We are phasing out our black sight glass o-rings with a new design green o-ring. Black o-rings no longer available for our 2″ or 3″ sight glasses. 1″ and 1-1/2″ kits will be supplied with black o-rings while they are available.