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When a worn or undersized oil seal lets grease escape and contaminants creep in, the result is accelerated bearing wear, costly downtime, and messy repairs. Mechanics, equipment rebuilders, and workshop owners working on gearboxes, pumps, and rotating machinery need a TC R23 metric NBR double lip rotary shaft oil seal they can trust to hold under pressure and keep running clean.
Each seal in this listing is a TC-type (double lip) rotary shaft oil seal built to the R23 metric standard. The sealing element is made from NBR (nitrile butadiene rubber), a material known for its resistance to petroleum-based oils, greases, and moderate temperatures. An internal garter spring maintains consistent radial lip pressure against the shaft throughout the seal's service life. Inner shaft diameters covered are 32 mm (≈1.26 in), 33 mm (≈1.30 in), and 34 mm (≈1.34 in), with outer diameters and depths varying by variant — ranging from 35 mm up to 82 mm OD and 4 mm to 14 mm depth. Each pack contains 10 pieces.
Typical applications include automotive gearbox and differential rebuilds requiring a 32mm shaft oil seal replacement, industrial pump and motor shaft sealing where a 34mm NBR rotary seal is specified, and agricultural or construction equipment maintenance calling for a metric double lip TC seal with garter spring in the 33mm bore range.
Two sealing lips — a primary dynamic lip and a secondary dust/exclusion lip — work together to retain lubricant and block contaminants simultaneously.
An internal garter spring applies consistent radial force on the primary lip, maintaining sealing contact even as the lip wears over time.
Nitrile butadiene rubber offers solid resistance to petroleum oils, gear lubricants, and ATF across a typical operating range of approximately −40 °C to +120 °C (−40 °F to +248 °F).
Manufactured to the R23 metric dimensional standard, ensuring dimensional interchangeability with OEM and aftermarket housings specifying this profile.
Each order ships as a pack of 10 identical seals — ideal for workshop stock, fleet maintenance, or batch rebuilds where multiple seals of the same size are needed.
250+ size combinations spanning 32–34 mm inner diameter, 35–82 mm outer diameter, and 4–14 mm depth — covering a broad spectrum of metric shaft and housing configurations.
| Seal Type | TC (Double Lip with Garter Spring) |
|---|---|
| Standard | R23 Metric |
| Sealing Material | NBR (Nitrile Butadiene Rubber) |
| Inner Diameter (ID) | 32 mm / 33 mm / 34 mm — see variant options |
| Outer Diameter (OD) | 35 mm – 82 mm — see variant options |
| Depth (Width) | 4 mm – 14 mm — see variant options |
| Spring Type | Garter Spring (internal) |
| Lip Configuration | Primary dynamic lip + secondary dust exclusion lip |
| Operating Temperature | Typically −40 °C to +120 °C (−40 °F to +248 °F) |
| Compatible Fluids | Mineral oil, gear oil, ATF, petroleum-based grease |
| Packing Quantity | 10 pieces per pack |
| Outer Case Material | See variant options |
Measure your shaft's outer diameter (this becomes the seal's inner diameter), then measure the housing bore (this becomes the seal's outer diameter), and finally measure the housing groove depth. Match all three dimensions — Inner Ø × Outer Ø × Depth — to the variant listed. If you are replacing an existing seal, the size is often stamped on the seal face or listed in your equipment's service manual.
A TC (double lip) seal has two sealing lips: a primary dynamic lip that retains lubricant and a secondary dust/exclusion lip that blocks dirt, water, and debris from entering the housing. A single-lip seal has only the primary lip. TC seals are preferred in environments where external contamination is a concern, such as agricultural equipment, off-road vehicles, and outdoor machinery.
NBR (nitrile butadiene rubber) is compatible with mineral oils, gear oils, automatic transmission fluid (ATF), and most petroleum-based greases. It performs reliably across approximately −40 °C to +120 °C. It is not recommended for use with phosphate-ester hydraulic fluids, brake fluid (DOT 3/4), or strong aromatic solvents. If your application uses these fluids, consider a Viton (FKM) seal instead.
The garter spring wraps around the inside of the primary sealing lip and applies a constant, even radial force against the shaft. This maintains sealing contact as the lip gradually wears and compensates for minor shaft runout. Without the spring, the lip may lose contact with the shaft over time, leading to leaks. For rotating shaft applications, a spring-loaded seal is strongly recommended.
Minor surface irregularities can sometimes be tolerated, but a heavily scored or grooved shaft will cause premature seal failure regardless of seal quality. For best results, the shaft surface in the sealing zone should have a finish of approximately 0.2–0.8 µm Ra and be free of deep scratches or grooves. If the shaft is worn, consider using a shaft repair sleeve before installing a new seal.
Clean the housing bore and shaft thoroughly before installation. Lightly lubricate the sealing lip with the same oil or grease the seal will be retaining. Press the seal squarely into the housing bore using a seal driver or a flat plate of the correct diameter — never hammer directly on the seal face. Ensure the seal is flush with or slightly below the housing face as specified by your equipment manual. Avoid dragging the lip over sharp keyways or splines during installation.
Each listing variant is sold as a pack of 10 identical seals of the selected Inner Ø × Outer Ø × Depth size. This makes them well-suited for workshop stock, fleet maintenance programs, or any rebuild job requiring multiple seals of the same specification.
