TC+Double lip + auxiliary lip
Rubber-covered O.D. with garter spring. The standard choice for motors and reducers.
TC+ details →
Rotary shaft sealing solutions
Sealed inside.Power never stops.
Seal selection, custom design and supply for every shaft in gearboxes, robots, wind turbines and electric motors.
TC+ seriesRubber-covered O.D.
Main, auxiliary and dust lip
Main, auxiliary and dust lip
Construction
Three parts.
One seal.
Every Spedent TC+ seal is built from a moulded rubber body, a steel case and a garter spring.
1Garter SpringCoiled steel spring that keeps constant radial force on the main lip and takes up wear.
2Rubber Seal BodyMain lip, auxiliary lip and dust lip, moulded in NBR, FKM or HNBR.
3Metal CaseL-shaped steel insert, fully rubber-covered, for a firm press fit in the bore.
Inside the gearbox
Where the shaft
leaves the housing.
Gear oil on one side, dust and water on the other. The seal holds the line.
No Leakage
The main lip keeps a stable contact band on the shaft, so gear oil stays in the housing.
Dust Blocked
The dust lip keeps dirt and water away from the main lip.
Built for Reducers
Lip design that copes with shaft runout and shock loads, in oil-, heat- and ageing-resistant compounds.
Complete sealing solutions
One machine.
Every seal position.
Pick a machine. Each number is a place where a shaft leaves a housing, and each one has a Spedent seal matched to its job.
Where the standard range ends, we design the seal to your drawing. Custom & OEM →
Illustrations, not engineering drawings
Solutions by industry
Wherever a shaft turns in oil.
Robot joints
Shoulder to ankle: where the oil seals sit in a humanoid robot.
Explore →
Harmonic reducer joints
A joint actuator taken apart, down to the seal at the output.
Explore →
RV reducer joints
Heavier joints, same seal job at the output.
Explore →
Heavy-payload robot arms
Base to wrist: RV reducer joints that carry the load.
Explore →
Light robot arms
Compact joint modules, a seal in every one.
Explore →
Gearboxes & reducers
A reducer layer by layer, from the cover to the oil.
Explore →
The seal at the shaft
Oil on one side, dirt on the other: the lips in section.
Explore →
Wind turbines
Pitch drives, main bearing, gearbox, generator and yaw: one seal supplier.
Explore →
Electric motors
Industrial motors, e-drives and servo motors, sealed at both ends.
Explore →Also in pumps, agricultural, construction and mining machinery, vehicles and transport, and high-end machinery.
How we work
From your shaft
to series supply.
One team from the first drawing to the last delivery, and back again if a seal ever fails.
- Operating conditionsYou send the shaft, housing, speed, temperature and medium, or a drawing or a sample.
- Selection or custom designWe choose the profile, lip and compound from 16 profiles and 17 compounds, or design the seal to your drawing.
- Samples and your testsFor special environments or equipment, series production starts only after the samples pass your own tests.
- Series productionMould making and production in-house, packed in Spedent-labelled bags and boxes.
- Failure analysisIf a seal leaks, send us the seal and the conditions. We work through the likely causes with you.
Why TC+
One extra lip. A steadier seal.
TC+ adds an auxiliary lip in light contact between the main lip and the dust lip. It supports the main lip as the shaft turns.
- Main lip stays putThe auxiliary lip keeps the main lip from flipping or wobbling under rotation.
- Even contact forceLoad at the sealing point is spread more evenly, for steadier sealing and longer life.
- Smoother installationA right-angle back chamfer with a lead-in bevel helps the seal go in straight.
Back chamfer
Front chamfer
Garter spring
Metal case
Dust lip
Auxiliary lip
Main sealing lip
Products
One catalogue.
4,034 standard sizes.
4–910 mmShaft diameter, TC+ / TG+ series, metric and inch
NBR · FKM · HNBRStandard elastomers; 17 compounds in our material data
CustomNon-standard sizes and profiles made to drawing
TB+Double lip
Metal O.D. for a rigid, precise press fit, with dust lip and garter spring.
SC+Single lip
Rubber-covered O.D., main lip with garter spring, where no dust lip is needed.
16 profiles in the range
TC+, TG+, TB+, SB+, SC+, VC+, KC+, EG+, EC+, three-lip TC3 and PTFE-lip versions. Cassette seals and O-rings are also available.
Choice of
professionals.
The Spedent stand at an industry trade show. Real photo.
Specifications
Engineering data.
Elastomers: temperature range
| Material | Temperature | Shaft speed |
|---|---|---|
| NBR (nitrile) | −40 to 120 °C | Low to medium |
| HNBR | −40 to 150 °C | Ask us |
| ACM (acrylate) | −25 to 150 °C | Medium to high |
| FKM (fluoroelastomer) | −20 to 200 °C | High |
| VMQ (silicone) | −70 to 220 °C | Ask us |
| PTFE | −100 to 280 °C | Ask us |
Installation requirements
| Shaft hardness | 45 HRC or higher |
| Shaft roughness | Ra 0.2–0.8 µm, plunge ground |
| Shaft tolerance | h9 |
| Housing roughness | Ra 1.6–3.2 µm |
| Housing tolerance | H8 |
| Lead-in chamfer | 15°–30° |
| Width tolerance | ±0.3 mm (≤10 mm), ±0.4 mm (>10 mm) |
| Spring and case | Carbon steel; 304 or 316 stainless for water, steam, sea water, acids and alkalis |
Reference values from the Spedent catalogue. Properties vary with compound; tell us your operating conditions for a recommendation.
Since
2013
2013
Spedent designs, tests and manufactures standard and custom oil seals and O-rings, from R&D and lab testing to mould making and production. More precise, more reliable, more durable.
Get a quote
Tell us the shaft. We'll match the seal.
Send the size, quantity and operating conditions. We reply with a quotation and a seal recommendation.
Inquiry sent
Thank you. We'll be in touch shortly.