American Commander Air Relief O-ring

Arneson/Poolsweep (F24) Backup Extension & Drive Valve O-ring 

Blue White (9003-009) Chlorinator O-ring
Doughboy (308-1152) Valve Cover Plunger O-ring
Hayward® (ECX9611246) EC Filter Bump Shaft O-ring Perflex®

(Part Of O-512Kit)
Leisure Bay (111733) Drain Plug O-ring 50, 100, 150 Sq. Ft. Filter 

Leisure Bay (303416) Drain & Vent O-ring Rainbow
Letro (F24) O-ring
Lomart-Prest Metals (53-019) Shaft O-ring
Lomart-Prest Metals (53-049) Valve Cover Plunger O-ring 

Rainbow (R172221) Air Vent Valve O-ring Dynamic Series I/II/III 

Rainbow (172224) 25 Sq. Ft. Filter Valve O-ring
SwimquipTM MK23 Filter Crank Quad
SwimquipTM (25575-0114) Drive Shaft O-ring
SwimquipTM (35505-0114) Crank Shaft O-ring