1. design, make mould and produce oil O-ring with Y-shape in house 2. Material: NBR, Viton, etc. 3. gloss finish 1. design, make mould and produce oil O-ring with Y-shape in house2. Material: NBR, Viton, etc.3. Section shape: Y-shape, O-shape, Squoare-shape, Ellipse-shape, etc.4. anti-oil, grease, water, etc.5. gloss finish Oil O-ring with Y-Shape