High Pressure VB Rubber Oil Seal

The High Pressure VB Rubber Oil Seal is engineered for heavy-duty rotary shafts operating under elevated internal pressures, continuous speed fluctuations, and aggressive media. Unlike standard seals designed primarily for grease retention at atmospheric pressure, this series features a reinforced metallic skeleton, a high-tensile garter spring, and a pressure-resistant lip profile to prevent lubricant bypass and extrusion.

Standard Structure: Single-lip with an auxiliary dust lip

Hardness Range: 60 to 90 Shore A (customizable)

Applicable Industries: Hydraulic drives, industrial gearboxes, earthmoving machinery, agricultural equipment, and heavy-duty industrial pumps.

Pressure-Resistant Lip Geometry: Designed with optimized contact width and a reinforced root thickness to prevent lip inversion or extrusion into the clearance gap under pressure surges.

Constant Radial Load: Equipped with a high-strength carbon steel or stainless steel garter spring that maintains steady radial force on the shaft, compensating for minor shaft runout and thermal expansion.

Rigid Metal Insert: The accurately formed metal case ensures secure press-fit retention in the housing bore and prevents structural distortion during high-torque operation.

Auxiliary Dust Protection: The secondary lip acts as a barrier against external contaminants such as sand, mud, water splash, and metal debris, reducing premature abrasive wear on the primary sealing interface.

Selecting the appropriate elastomer ensures chemical compatibility and long-term elasticity across varying thermal ranges:

Hydraulic Equipment: Axial piston pumps, vane pumps, hydraulic motors, and high-pressure power units.

Industrial Gearboxes: Heavy-load gear drives requiring continuous lubrication retention under elevated operating temperatures.

Construction Machinery: Excavators, wheel loaders, dozers, and mobile hydraulic cylinders exposed to shock loads and abrasive dust.

Agricultural Equipment: Tractors, combine harvesters, and rotary tillers operating in harsh, muddy conditions.

To ensure batch-to-batch consistency for OEM and wholesale supply, every production run undergoes strict verification:

Raw Material Verification: Specific gravity, polymer content, and rheometer testing.

Physical Property Testing: Tensile strength, elongation at break, and durometer hardness (Shore A) checks.

Dimensional Inspection: Optical profile measurement of the sealing lip, inner diameter, outer diameter, and metal case thickness.

Functional Testing: Spring tension measurement and random bench leakage testing under simulated pressure conditions.

Dimension Options: Available in standard metric and inch sizes, as well as non-standard custom dimensions based on engineering drawings or physical samples.

Metal Case & Spring: Custom configurations using carbon steel or stainless steel (e.g., SUS304 / SUS316) for corrosive environments.

Branding & Packaging: Logo embossing on the metal case, custom barcode labeling, private label packaging, and secure bulk industrial packaging.

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