TC Skeleton Oil Seals ID 90 92 95 98mm | NBR 70 Dual Lip Rotary Shaft Seal

Measure three dimensions: the shaft inner diameter (ID), the housing bore outer diameter (OD), and the housing depth (thickness). All three must match your application exactly. For example, a 90x120x12mm seal fits a 90mm shaft, a 120mm bore, and a 12mm deep housing. When in doubt, measure twice and cross-reference with your equipment service manual or OEM part number.

NBR stands for Nitrile Butadiene Rubber — a synthetic elastomer with strong resistance to petroleum-based oils, fuels, and hydraulic fluids. The 70 refers to Shore A hardness of 70, which generally provides a good balance of flexibility and wear resistance for rotary shaft sealing. NBR 70 is the most widely used material for general-purpose oil seals in gearboxes, axles, and hydraulic systems.

The TC dual lip design includes a secondary dust exclusion lip that generally provides protection against water splash, mud, and light contaminants — making these seals suitable for agricultural equipment, outdoor machinery, and construction equipment. Prolonged submersion or high-pressure water ingress is not recommended without additional protection.

TC skeleton oil seals are designed for rotary shaft applications and typically handle shaft surface speeds up to approximately 4-8 m/s, depending on the specific size, lubrication conditions, and shaft surface finish. They are generally suited for low-to-moderate pressure environments. For high-pressure hydraulic applications, confirm suitability with your equipment specifications before ordering.

Yes. All dimensions (ID x OD x Thickness) are in metric millimeters, compatible with metric shafts and housings standard in European and Asian machinery. For inch-based equipment, convert your measurements before ordering — for example, 95mm ID is approximately 3.74", 120mm OD is approximately 4.72", and 12mm thickness is approximately 0.47".

1. Clean the housing bore and shaft thoroughly. 2. Apply a thin film of clean grease or oil to the seal lip and shaft surface. 3. Press the seal in squarely using a seal driver or flat block — never hammer directly on the seal face. 4. Ensure the seal sits flush with or slightly below the housing face. 5. Avoid nicking or rolling the lip during installation, as this will cause immediate leakage.

These larger-diameter TC oil seals are commonly found in agricultural tractor axles and PTO shafts, industrial gearbox output shafts, hydraulic pump shafts, construction equipment drive systems, and heavy-duty truck wheel hubs. Always verify the exact ID, OD, and thickness against your equipment service manual before ordering.