TC Skeleton Oil Seal — Fluorine Rubber Rotary Shaft Lip Seal Ring (Multiple Sizes)

Measure three dimensions on your shaft and housing: inside diameter (ID), outside diameter (OD), and seal height (width). The ID must match your shaft diameter exactly. This listing covers inside diameters of 30–60mm (approximately 1.18"–2.36") and outside diameters of 42–100mm (approximately 1.65"–3.94"). Select the variant that matches all three measurements. When in doubt, consult your equipment's service manual or measure the old seal directly.

'TC' designates a double-lip seal design with a metal skeleton (spring-loaded inner lip plus a secondary dust-exclusion lip). The metal case provides a press-fit into the housing bore, while the dual lips work together to retain lubricant and block contaminants from entering the bearing or shaft area.

Yes. These seals are made from fluorine rubber (FKM/Viton®-type compound), which generally withstands continuous operating temperatures from approximately -20°C (-4°F) up to 200°C (392°F) and resists petroleum oils, hydraulic fluids, fuels, and many industrial chemicals far better than standard NBR rubber seals.

In most cases, yes. The secondary dust lip on TC-type seals helps exclude water, mud, and debris, making them a common choice for agricultural equipment, outdoor power tools, and marine auxiliary applications. However, for fully submerged or high-pressure water environments, verify the specific pressure rating of your chosen size before installation.

TC skeleton oil seals are designed for rotary shaft applications. Typical surface speed limits for FKM lip seals are generally up to 12–15 m/s (approximately 2,400–3,000 ft/min), though the exact limit depends on shaft finish, lubrication, and seal size. Always confirm the rated speed for your specific variant with us if your application is high-speed.

Clean the housing bore and lightly lubricate the seal lip with the fluid it will retain. Press the seal squarely into the bore using a flat driver or seal installation tool — never hammer directly on the seal face. The metal OD should be flush with or just below the housing surface. Avoid nicking the lip on sharp shaft edges; use a chamfer or installation sleeve if needed.

Sizes in the 30–60mm ID range are typically found in small engines, gearboxes, pumps, lawn tractors, motorcycles, ATVs, and light industrial machinery. The 42–100mm OD range covers a wide variety of housing bores in automotive differentials, agricultural implements, and power transmission equipment.