mechanical seals for 12/10 G-G gravel pumps material: stainless steel high performance long serve life ... is a professional manufacturer of type M AH HH L (R)slurry pumps, G/GH gravel pumps, SP/SPR sump pumps, series ... ZGB(P)L slurry pumps, series ZJ (G)L slurry pumps, sand pumps, mud pumps, ash pumps ... pumps, and pump parts. mechanical seal for 12/10G-G gravel pumps