**Product Specifications:**
- **Model No.:** SR
- **Materials:** Silicone Rubber
- **Color:** Available (Customizable)
- **Hardness:** 30-85 Shore A
- **Temperature Range:** -40°C to 230°C
- **Fire Resistance:** UL94V0
- **Dust Protection:** IP6
- **Water Resistance:** IP6
- **Special Features:** 3M Gumming Tape
- **Material Reports:** SGS, UL94V0
- **Production Standard:** ISO 9001:2008
- **Trademark:** Better
- **Packaging:** PE Bags, Carton Boxes
- **Certifications:** CE, SGS, UL
- **Origin:** Xiamen, China
- **HS Code:** 3926909090
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**Custom Silicone/Viton/EPDM Rubber Oil Pan/Engine Gasket/Seal/Washer/O Ring Sheet**
**Plunger Seal, Lip Seal**, also known as Piston Seal, Radial Seal, or Rod Seal, is a type of fluid seal designed for use in pneumatic and hydraulic cylinder applications. These seals are commonly referred to as **Rubber Pneumatic Seals** and **Rubber Hydraulic Seals**.
A **Silicone Lip Seal** is a self-sealing ring that relies on the lip to maintain contact with the sealing surface, blocking any leakage path. The working pressure of the lip seal is the combination of pre-pressing force and fluid pressure. As the pressure increases, the lip expands and conforms more closely to the sealing surface, enhancing the sealing performance. Additionally, the lip edge has a scraping function that helps remove excess lubricant, further improving the seal’s efficiency.
Lip seals are typically made from high-grade materials such as **Silicone Rubber**, **Liquid Silicone Rubber (LSR)**, **NBR**, **FKM**, and **PU Rubber**. They are produced using **Silicone Rubber Compression Mold Tooling** or **LSR Injection Molding (LIM)** with middle mold plates.
**Working Environment & Performance:**
- **Working Pressure:** < 25 MPa
- **Working Temperature:** -40°C to +120°C
- **Mediums:** Hydraulic oil, water, air
- **Speed Ranges:**
- NBR: 0.01–0.6 m/s
- FKM: 0.05–0.3 m/s
- PU Rubber: 0.01–1 m/s
Lip seals are primarily used in **reciprocating seals** and offer better overall performance compared to **O-rings** due to their ability to handle bidirectional pressure and reduce wear over time.
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**Comparison Between Y-shaped Seal (Lip Seal) and O-ring Seal (Extrusion Seal):**
| Description | Y-shaped Seal (Lip Seal) | O-ring Seal (Extrusion Seal) |
|---------------------|----------------------------------------------------------|-----------------------------------------------------------|
| **Advantage** | Small seal section size; easy installation; can be two-way | Excellent sealing; low friction at low pressure; self-compensating after wear |
| **Disadvantage** | Poor sealing under high pressure; prone to rolling/twisting | One-way seal; complex structure; may cause pressure between seals |
| **Main Application**| Small slide valves; piston and rod seals with minor leakage allowed | High-performance piston and rod seals |
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**Why Choose Xiamen Better Silicone Rubber Co., Ltd.?**
1. **Precision Mold-Making Technology Since 1998**: Offering one-stop services for silicone rubber compression molded parts, plastic injection molding, and liquid silicone rubber molding.
2. **In-depth Knowledge of Materials**: Expertise in manufacturing **Rubber Lip Seals**, **Silicone Rubber Rod Seals**, and **Piston Seals**.
3. **Advanced Production Techniques**: Utilizing high-quality raw materials and advanced molding methods to ensure durability and performance.
When purchasing **Plunger Seals** or **Piston Rods**, consider the following factors:
- Piston Rod movement speed
- Starting friction of the piston rod
- Working pressure of the piston seal
- Operating temperature of the rod seal
- Viscosity of the working medium
- Allowable leakage tolerance
- Groove size for the lip seal
- Fit tolerance for the piston rod
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**Custom Plunger Seals – Fast Quotation Process:**
1. Provide 2D or 3D design drawings, samples, or describe your requirements.
2. Specify material needs: Solid Silicone, Liquid Silicone Rubber.
3. Define material grade: Food-grade, medical-grade, or high-elasticity materials.
4. Set hardness and durometer: 10–80 Shore A.
5. Share working environment details: Temperature, chemical exposure, pressure, and testing requirements.
6. Mention production environment needs: Clean room required?
7. Package requirements: Air-filled bags to prevent deformation or damage.
Whether you're looking for standard or custom **Silicone Lip Seals**, **Rubber Seals**, or **Piston Seals**, we provide tailored solutions to meet your specific application needs. Contact us today for fast and accurate quotations!
Marine Steel Plate
Due to the harsh working environment of the ship, the hull shell is subject to chemical corrosion of seawater, electrochemical corrosion and corrosion of marine organisms and microorganisms; the hull is subjected to large wind and wave impacts and alternating loads; the shape of the ship is complicated by processing methods, etc. Steel for hull structure is strictly required. First of all, good toughness is the most critical requirement. In addition, high strength, good corrosion resistance, weldability, forming properties and surface quality are required.
Shipbuilding Steels Our hot rolled shipbuilding steel is produced in accordance with the relevant Classification Society, examples of which include Lloyds Register and Det Norske Veritas.
Our steel products include steel shipbuilding plate, fabricated steel sections and floor plate for decking. We can also supply bulb flats for plate stiffening, structural steel angles and inverted angles.
Our plates are supplied under the ASTM/ASME specification (ASTM A131 / ASME SA 131) which is the standard specification for Structural Steel for Ships. We offer higher strength shipbuilding steels as standard .High strength steels offer significant cost advantages by reducing the weight of the structure in comparison to the steel used.
The plates are suitable for use in the construction of container ships and large cargo freighters as well as commercial shipping lines such as luxury cruise ships and ferries. Supply options include heavy plates, surface treated plates and pre-fabricated sections. In most cases, the steel can also be supplied as hot rolled coils or cut into lengths (sheets).
These high yield materials are commonly used in the construction of hulls and superstructures for large shipping vessels. The grades are exclusively for shipbuilding use as set out in the standard.
Shipbuilding Steel Plate, Ship Building Steel Plate, Ship Steel Plate, Shipbuilding Plate
Shandong Guanzhou Iron and Steel Group Co., Ltd , https://www.cnshansteel.com