35mm ID Nitrile Rotary Shaft Oil Seal — Double Lip TC R23 with Garter Spring

You need three measurements: shaft outer diameter (= seal ID, here 35mm / ≈1.378"), housing bore inner diameter (= seal OD, e.g. 50mm / ≈1.969"), and housing depth (= seal height, e.g. 7mm / ≈0.276"). All three must match your application. Select the correct OD and height from the variant dropdown above. If you're unsure, contact us with your measurements.

TC is a widely used designation for a double-lip oil seal with a garter spring. The primary lip seals against lubricant leakage; the secondary (dust) lip faces outward to exclude contaminants. R23 refers to the standard profile geometry. This design is generally more robust than single-lip (SC) seals in applications exposed to dirt, moisture, or pressure fluctuations.

The garter spring is a small coil spring that wraps around the inside of the primary lip. It maintains consistent radial contact force between the lip and the shaft, even as the lip wears slightly over time or as the shaft experiences minor runout. Seals with garter springs typically provide more reliable long-term sealing than springless designs.

Nitrile (NBR) rubber is generally resistant to petroleum-based oils, greases, and water splash, making it commonly used in outdoor agricultural equipment, construction machinery, and automotive axles. It is not recommended for continuous immersion in water above approximately 100°C, brake fluid, or phosphate ester hydraulic fluids. For aggressive chemical environments, contact us to confirm suitability before ordering.

Nitrile rotary shaft oil seals are typically rated for shaft surface speeds up to approximately 4–6 m/s and operating temperatures from around -40°C to +120°C (-40°F to +248°F). Actual performance depends on lubrication, shaft finish, and installation quality. Contact us if your application is near these limits.

Yes. All dimensions (ID × OD × Height) are in millimeters and follow standard metric sizing conventions used globally in automotive, agricultural, and industrial machinery. The 35mm ID is a common metric shaft size found in gearboxes, axles, pumps, and electric motors. For reference: 35mm ≈ 1.378 inches.

1. Clean the housing bore and shaft thoroughly. 2. Lightly lubricate the seal lip with the fluid it will be sealing. 3. Press the seal squarely into the housing using a flat press plate or seal driver sized to the OD — never strike the seal face directly. 4. Ensure the primary lip faces toward the lubricant. 5. Protect the lip from sharp edges (keyways, threads, splines) during installation using a sleeve or tape.

Pack quantity is selectable at checkout: 1, 2, 5, or 10 pieces per order, depending on the size variant. Larger packs offer a lower per-unit cost and are useful for workshop stock or multi-point repairs. The pack quantity option is shown alongside the size selector above.