Carbon Graphite Seal Rings
59U Carbon Graphite Seal Ring 59U Series
The 59U series is an embedded carbon graphite seal ring with rubber bellows design, providing excellent follow-up compensation ability. Suitable for marine pumps, seawater pumps, and various corrosive media conditions.
Key Facts
Model 59U Series
Category Carbon Graphite Seal Rings
Materials Standard Graphite / Resin-Impregnated Graphite
Applications Marine Pumps Product Features Rubber bellows design Good follow-up compensation Seawater corrosion resistant Easy installationCommon Sizes Inner Dia (d) 14 ~ 80 mm Outer Dia (D) 26 ~ 100 mm Height (H) 8 ~ 20 mm
Note: Above are standard size ranges. Custom non-standard sizes available per drawing.
Installation Notes 59U uses rubber bellows; avoid twisting or deforming bellows during installation Ensure housing chamfer is smooth to avoid cutting rubber components Select seawater-resistant impregnation grade for marine applications Rubber bellows are temperature-sensitive; keep medium temperature within rating Hand-rotate after installation to check for bellows interferenceTechnical Parameters Model 59U Temperature -30°C ~ 180°C Pressure ≤ 1.0 MPa Speed ≤ 3500 rpm Medium Seawater, fresh water, oils
Graphite Technical Parameters Compressive Strength 92 MPa Carbon Content 99.9% Flexural Strength 38 MPa Shore Hardness 78 HS Ash Content 0.002%
Above are physical properties of standard graphite (M106H). Performance improves with different impregnation processes.
Available Materials Standard Graphite Resin-Impregnated Graphite Antimony-Impregnated Graphite Copper-Impregnated Graphite
Recommended Mating Materials Carbon graphite seal rings perform best with these mating materials:
Silicon Carbide (SiC) Tungsten Carbide (WC) High-Chrome Stainless Steel
Applications Marine Pumps Seawater Pumps Cooling Water Pumps General Industry