GW214PP2 Spherical Triple Lip Seals Agricultural Bearing 2 3/4" Inch Inner Diameter GW214PP2 Triple Lip Seals Round Bore Relubricable, Heavy Duty Disc Harrow bearings are made with triple lip seals to protect from corrosive environments, this seal is a one piece shroud cover with three molded contact seals,Standard relubrication feature is a drilled hole in groove.