**Product Specifications**
- **Model No.:** SR
- **Materials:** Silicone Rubber
- **Color:** Available
- **Hardness:** 30-85 Shore A
- **Temperature Range:** -40°C to 230°C
- **Flame Retardant Rating:** UL94V0
- **Dust Protection:** IP6
- **Water Resistance:** IP6
- **Special Feature:** 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, also known as Lip Seal, Piston Seal, Radial Seal, or Rod Seal, is a type of sealing component used in pneumatic and hydraulic systems. It consists of an outer diameter lip and an inner diameter lip, designed to create a tight seal by pressing against the surface of the coupling. 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 its lip to block the leakage path. The sealing performance improves with increased pressure, as the lip becomes more tightly pressed against the surface. Additionally, the edge of the lip has a scraping function, which helps remove excess oil and enhances the overall sealing effect.
These seals are typically made from high-quality materials such as silicone rubber, liquid silicone rubber (LSR), NBR, FKM, and PU rubber. They are manufactured using either silicone rubber compression molds or LSR injection molding (LIM) with middle mold plates.
**Working Conditions & Speed Ranges:**
- **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 applications**, offering better performance and longer service life compared to extrusion seals like O-rings. Below is a comparison between Y-shaped seals (lip seals) and O-ring seals:
| **Description** | **Y-shaped Seal (Lip Seal)** | **O-ring Seal (Extrusion Seal)** |
|------------------------|-------------------------------------------------------|------------------------------------------------------|
| **Advantages** | Small size, easy installation, can be used for dual pressure | Excellent sealing, low friction at low pressure, self-compensating after minor wear |
| **Disadvantages** | Poor sealing at low pressure, prone to rolling or twisting | One-way seal, complex structure, may cause oil pressure between two seals |
| **Main Applications** | Small slide valves, piston and rod seals allowing small leakage | High-performance piston and rod seals |
**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 LSR molding.
2. **Expertise in Material Selection** for rubber lip seals, including food-grade, medical-grade, and high-elasticity materials.
3. **Advanced Mold-Making Technology** for silicone rubber rod seals and piston seals.
**Key Considerations When Purchasing Plunger Seals & Piston Rods:**
- Piston rod movement speed
- Starting friction of the piston rod
- Working pressure of the piston seal
- Working 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
**For Fast Custom Quotation:**
1. Provide 2D/3D drawings, samples, or describe your requirements.
2. Specify material types: Solid Silicone, Liquid Silicone Rubber.
3. Define material grades: Food-grade, medical-grade, high-elasticity.
4. Set hardness and durometer requirements: 10–80 Shore A.
5. Share working environment details: Temperature, chemical exposure, pressure needs, and testing requirements.
6. Mention production environment needs: Clean room required?
7. Specify packaging preferences: Air-packed bags to prevent deformation.
Whether you need standard or custom seals, we offer tailored solutions to meet your specific application requirements. Contact us today for a quick and accurate quotation!
PPGI/PPGL(prepainted galvanized steel /prepainted galvalume steel )is also known as pre-coated steel,color coated steel, coil coated steel, color coated steel,pre pianted steel sheet,The PPGI steel coil/sheet made of cold-rolled steel sheet and galvanized steel sheet, subjected to surface pretreatment (degreasing, cleaning, chemical conversion treatment), coated in a continuous manner, and baked and cooled to form a product. Coated steel has light weight, beautiful appearance and good anti-corrosion performance, and can be directly processed.
Prepainted Steel Sheet,Ppgi Steel Sheet,Colour Coated Gi Sheet,Ppgi Sheet,Color Coated Steel Coil
Shandong Guanzhou Iron and Steel Group Co., Ltd , https://www.cnshansteel.com