Products Description
Vacuum pump repair kit O ring
O-rings are usually used in the following positions during vacuum pump maintenance
- Pump body sealing: O-rings can be used for sealing between the pump body and the air inlet. It ensures that no gas leakage occurs when the pump body is connected to the air inlet, and the normal working condition of the vacuum pump is maintained.
- Exhaust port seal: O-ring can be used for sealing between the exhaust port and the pump body. It ensures that no gas leakage occurs when the pump body is exhausted, maintaining the exhaust efficiency and performance of the vacuum pump.
- Pump body component connections: O-rings may also be used for sealing between different components of the vacuum pump, such as the pump body and impeller, pump body, and shaft, to ensure a tight and airtight connection between components.
Common vacuum pump O-ring materials include:
- Nitrile Butadiene Rubber (NBR): Has good oil and abrasion resistance and is suitable for general industrial applications.
- Fluorine rubber (FKM): has good corrosion resistance and high temperature resistance, and is suitable for high vacuum and chemical environments.
- Silicone rubber (VMQ): It has good high-temperature resistance and is suitable for high-temperature environments and food, medical and other industries.
FKM Description
Corrosion-resistant FKM Vacuum Pump Repair Kit O-ring
FKM (fluoroelastomer) is a commonly used corrosion-resistant material suitable for some vacuum pump applications that have higher requirements on chemical substances.
Due to its excellent corrosion resistance and high-temperature resistance, FKM material is often used in O-rings in vacuum pumps that require corrosion resistance. However, it should be noted that the price of FKM materials is relatively high, so when choosing to use FKM O-rings, you need to weigh its performance requirements and cost factors.
| FKM 75 | ||||
| Property | Unit | Test Method | Test Parameter | Value |
| Hardness | Shore A | DIN 53505 | 75 ±5 | |
| Specific Gravity | g/cm3 | ASTM D 1817 | 1.88 | |
| Tensile Strength | MPa | DIN 53504 | S2 | 13.4 |
| Ultimate Elongation | % | DIN 53504 | S2 | 154.2 |
| Compression Set | % | ASTM D 395 B/1 | 70h / 150°C | 13.7 |
| Compression Set | % | ASTM D 395 B/1 | 24h / 204°C | 19.9 |
| Compression Set | % | ASTM D 395 B/1 | 70h / 200°C | 21.5 |
| Compression Set | % | ASTM D 395 B/1 | 336h / 200°C | 31 |
| Low temp. resistance | °C | ASTM D 1329 | TR10 | -17 |
| Bending test after 24h at -35°C |
ok/nok | VW 2.8.1 p.38 | pass | |
vMQ Description
High-temperature resistant VMQ Vacuum Pump Repair Kit O-ring
VMQ (polysiloxane) is a high-temperature resistant material also known as silicone rubber.
| VMQ | |||
| Physical properties | |||
| Property | Test standard | Value | Unit |
| Hardness | ISO48 | 65 | IRHD |
| Elongation at break | ISO37 | 250 | % |
| Tensile strength | ISO37 | 6.6 | Mpa |
| Compression set-24 hours at 175℃ Slab | ISO815 | 20 | % |
| Low-temperature resistance TR10 | ISO 2921 | -40 | ℃ |
| Ageing properties | |||
| Property | Test standard | ||
| Hardness change | ISO 188 | 5 | IRHD |
| Elongation at break change | -28 | % | |
| Tensile strength change | -16 | % | |
| Weight change | -2.35 | % | |
How to get customized size vacuum pump repair kit Description
- Vacuum Pump Model and Manufacturer: Provide the specific model and manufacturer information of your vacuum pump to ensure the repair kit is compatible with your vacuum pump.
- Repair Kit Contents: Clearly state what parts and accessories you need included in the repair kit. Typically, a repair kit may include seals (such as O-rings, and sealing rings), bearings, shaft seals, sliding parts, consumables, etc.
- Repair kit specifications and quantities: Determine the specifications and quantities of each component based on your repair needs. For example, determine the required O-ring size, bearing type and quantity, etc.
- Working environment and requirements: Provide information about the working environment in which the vacuum pump is used, such as temperature range, media type, pressure requirements, etc. This will help in selecting components whose materials and specifications meet the requirements of the working environment.
- Special requirements or customization needs: If you have special requirements or customization needs, such as special materials, special sizes special logos, etc., they need to be clearly stated.
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