Sheeba Engineering Co. Supplies Gravity Lock with Deep Groove Bottom Plate. Sheeba Engineering Co. Manufactures a wide range of carriers and accessories like Perforated Triangular Spindles, Loading and Unloading Basket Dye Springs etc. For yarn and fibre dyeing in textile industries. The Gravity Lock with Deep Groove Bottom Plate comes in 2.5 mm thickness with inside silicone ring to fit in plastic tubes. The Gravity Lock with Deep Groove Bottom Plate is suitable for plastic dye tube having sizes 63 OD X 57 ID.