Techemer Composites (Guangdong) Co., Ltd.
Leading a New Era in Elastomeric Alloy Bearings, Bushings, and Seals, Setting Industry Standards.
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A propeller shaft seal is a critical component in marine vessels that prevents water ingress into the hull where the propeller shaft exits. This essential seal ensures the smooth operation of your ship’s propulsion system by maintaining a watertight seal around the rotating shaft.
For ships and submarines, the marine propeller shaft seal and submarine propeller shaft seal provide specialized solutions for high-pressure environments.
| Material Grade | |||||
| Bearing(lining) | INDRON®TSTN | INDRON®HRBR | INDRON®HAWF | INDRON®UNIV | INDRON®PLAT |
| Material | Synthetic Engineering Elastomers | Synthetic Engineering Elastomers | SyntheticEngineering Elastomers | Synthetic Engineering Elastomers | Synthetic Engineering Elastomers |
| Recommended Workplace | Guide Bearings & Seals | Guide Bearings& Seals | Guide Bearings & Seals | Guide van, connecting rod bushing | Guide vane, connecting rod bushing |
| Temperature Limit | 70℃ | 70℃ | 70℃ | 70℃ | 70℃ |
| Dry Rub | Yes | low speed | low speed | Yes | Yes |
| Acid Resistance | limit | limit | limit | limit | limit |
| Alkaline Resistant | limit | limit | limit | limit | limit |
| Hydrocarbon Suitability | Yes | Yes | Yes | Yes | Yes |
| Abrasion Resistance | good | excellent | excellent | good | good |
| Friction Pair(bushing) | bronze | HRC40 | HRC40 | HRC40 | HRC40 |
| Stainless | recommend | recommend | recommend | recommend | |
| Typical Application | water, sea water | water, sea water | water, sea water | water, sea water | water, sea water |
| Most fluids(pH 5-10) | Most fluids(pH5-10) | Most fluids(pH5-10) | Most fluids(pH 5-10) | Most fluids(pH5-10) | |
| Note | Lowest coefficient of friction,suitable for dry running applications, good wear resistance | Use silt water under moderate grinding conditions | Use ofsilt-containing water under high grinding conditions. Contains abrasion resistant | high load capacity | high load capacity |
| Property List of INDRON® Elastic-plastic Alloy | TSTN | CFlon | PLAT | hRBR | ||
| Properties | Unit | Test Method | Typical Value | |||
| Physical Property | ||||||
| Density | g/cm3 | GB/T 1033.1 /ISO 1183.1 | 1.16 | 2.05 | 1.23 | 1.1 |
| Mechanical Properties | ||||||
| Tensile Strength | MPa | GB/T 1040.2 /ISO 527.2 | 40.3 | 22.9 | 30 | 20.3 |
| Elongation at Break | % | GB/T 1040.2/ISO 527.2 | 300 | 560 | 150 | 421 |
| Shore Hardness | ° | GB/T 2411/ISO 868 | 62~66D | 68D | 67~76D | 85~95A |
| Water Absorption Mass (Saturated) | % | GB/T 1690/ISO 1817 | 1.2 | 1.2 | 1 | 1.2 |
| Water Absorption Volume (1080h) | % | GB/ T1690/ISO 1817 | 1.4 | 1.4 | 0.9 | 1.7 |
| Charpy Impact Strength (Notched) | kJ/㎡ | GB/T 1043.1/ISO 179.1 | 110 | 100 | 120 | — |
| Compressive Strength | MPa | GB/T 1041/ISO 604 | 24.6 | 28.8 | 38 | 3.8 |
| Modulus Compression | MPa | GB/T 1041/ISO 604 | 423 | 828 | 600 | 60 |
| Compressive Set (24h) | % | GB/T 7759/ISO 815 | 25 | — | — | 13 |
| Maximum Load Capacity (Low-speed oscilating at 25% strain ) | MPa | 26 | 25 | 38 | 5 | |
| Maximum Load Capacity (continuous operation at 25% strain ) | MPa | 10 | 10 | 20 | 3 | |
| Maximum Operation Temperature (in water) | °C | 70 | 100 | 70 | 70 | |
| Maximum Operation Temperature (Dry) | °C | 110 | 260 | 110 | 110 | |
| Tribology Property | ||||||
| Relative Volume Wear (by Rotating Cylinder Drum) | mm3 | GB/T 25262/ISO 23794 | 138 | 200 | 136 | 84 |
| Limiting PV (Seawater Cycling, Linear Speed 5.13m/s) | MPa·m/s | GB 7948-87 | 101.3 | — | — | — |
| Limiting PV (Dry Frition, Linear Speed 5.13m/s) | MPa·m/s | GB 7948-87 | 1.69 | — | 2.3 | 1 |
| Coefficient of Dynamic Friction (Water) | GB 7948-87 | 0.08-0.16 | 0.05-0.15 | 0.08-0.16 | 0.08-0.16 | |
GB/T 9867, ISO 4649 and ASTM D5963 Relative Volume Wears Comparison Among (mm³)
Part of the data is abstracted from Thordon's Product Specifications
ASTM D5963 (Comparison of abrasion) (㎥)
Partial data from THORDON product description
| Graphite | |||||||||||||||||||||||||||||||||||||||||||||||
| RAILKO NF22 | |||||||||||||||||||||||||||||||||||||||||||||||
| ORKOT TLG-P/S | |||||||||||||||||||||||||||||||||||||||||||||||
| ORKOT TXM-M | |||||||||||||||||||||||||||||||||||||||||||||||
| TENMAT T14 | |||||||||||||||||||||||||||||||||||||||||||||||
| TENMAT T814 | |||||||||||||||||||||||||||||||||||||||||||||||
| Polyformaldehyde(POM) DELRIN AF | |||||||||||||||||||||||||||||||||||||||||||||||
| THORDON THORPLAS | |||||||||||||||||||||||||||||||||||||||||||||||
| PTFE | |||||||||||||||||||||||||||||||||||||||||||||||
| INDRON PLAT | |||||||||||||||||||||||||||||||||||||||||||||||
| THORDON HPSXL | |||||||||||||||||||||||||||||||||||||||||||||||
| UHMWHDPE | |||||||||||||||||||||||||||||||||||||||||||||||
| THORDON SXL | |||||||||||||||||||||||||||||||||||||||||||||||
| DIN | |||||||||||||||||||||||||||||||||||||||||||||||
| INDRON TSTN | |||||||||||||||||||||||||||||||||||||||||||||||
| THORDON XL | |||||||||||||||||||||||||||||||||||||||||||||||
| INDRON TITN | |||||||||||||||||||||||||||||||||||||||||||||||
| INDRON HRBR | |||||||||||||||||||||||||||||||||||||||||||||||
| O | 50 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | ||||||||||||||||||||||||||||||||||||||
Under the same conditions, INDRON" elastoplastic alloy has less wear than other common nonmetal bearing materials, and some of its models are even better than imported materials,which means INDRON* bearing has longer service life, higher reliability and lower maintenance cost.
What bearing materials are more suitable as the materials used for water pump guide bearings, Babbitt alloy, rubber, ceramics or new polymer materials? It is advisable to take account of the lubrication requirements, use environment and maintenance cycle of the equipment.
Our ship propeller shaft seals are manufactured using high-performance elastomeric polymer alloy materials, offering:
Additionally, the INSRON® propeller shaft seal developed by Techemer Composites is a groundbreaking solution. This seal integrates lubricating materials that protect the tail shaft of yachts and marine vessels. Unlike ordinary materials, the INSRON® seal features:
Whether you need a replacement propeller shaft seal or want to upgrade to the best propeller shaft seal types, we’ve got you covered.
Sealing a propeller shaft requires a combination of the right materials and proper installation techniques. Our seals are designed to simplify the process and ensure a watertight fit. For RC boat enthusiasts, we also offer RC boat propeller shaft seals tailored to small-scale marine applications.
Our seals are suitable for a wide range of marine applications, including:
At Techemer, we’re committed to providing the highest quality products for marine propulsion systems. Here’s why our customers trust us:
Q1: How are propeller shafts sealed?
A1: Propeller shafts are sealed using specialized materials and designs, such as elastomeric seals, lip seals, or mechanical seals, depending on the application.
Q2: How does a submarine propeller shaft seal work?
A2: Submarine seals are designed to withstand high-pressure environments and often feature advanced materials and multi-layered sealing mechanisms.
Q3: What is the best type of propeller shaft seal?
A3: The best seal depends on your vessel’s requirements. For general marine use, elastomeric polymer alloy seals are a top choice due to their flexibility and durability.