Product Introduction: Sealing Ring Sealing ring is a general-purpose elastic sealing consumable widely applied in triplex mud pumps, sprinkler pumps, pipeline flanges, stuffing boxes and various hydraulic equipment, used to fill assembly gaps and block liquid, gas leakage. ## Material Classification 1. Nitrile rubber (NBR): Excellent oil resistance, mainly used for lubricating oil sealing of power end gears, shafts and bearings; 2. Fluorine rubber (FKM): High temperature, corrosion and mud resistance, suitable for high-pressure fluid end, drilling fluid and chemical medium sealing; 3. Polyurethane (PU): Ultra-high wear resistance, matched with piston, liner and extension rod anti-leakage positions; 4. Metal composite sealing ring: For high-pressure flange, plug and cylinder cover static sealing under extreme working pressure. ## Product Types - O-ring: Universal static and low-speed dynamic sealing, matched with grooves of flanges, plugs and valve bodies; - V-type packing ring: Multi-layer combined sealing for stuffing box and piston rod reciprocating motion; - Flat gasket ring: Static sealing between cylinder cover, liner seat and flange joint surfaces; - Skeleton oil seal ring: Rotary sealing for gear shaft, crankshaft and other rotating parts. ## Performance Advantages 1. Good elasticity and compression resilience, can fit irregular gaps tightly without permanent deformation after long-term compression; 2. Strong wear resistance, anti-sand erosion, effectively isolate sand-containing drilling mud, water and lubricating oil; 3. Aging resistant, not easy to harden, crack or lose elasticity under continuous vibration and temperature alternation of pump operation; 4. Complete standard specifications, strong interchangeability, easy to replace on site without complex disassembly. ## Application Scenarios Widely used in mud pump fluid end (cylinder cover, liner lock, stuffing box, valve assembly), power end (shaft seal, bearing end cover), pipeline flange connection, shear relief valve, pressure gauge interface and sprinkler pump water passage sealing. It eliminates hidden dangers such as mud leakage, oil seepage and air intake, stabilizes pump working pressure, reduces medium waste and equipment corrosion. As a basic essential spare part for all hydraulic and pumping equipment, it ensures tight, stable and long-term operation of the whole unit.