33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
VMQ O-Rings are widely used due to the following outstanding properties of silicone rubber:
Exceptionally Wide Service Temperature Range: This is its most prominent advantage. Typically suitable for long-term use between -60°C to +225°C, with short-term exposure to even higher or lower temperatures possible.
Excellent Weather & Aging Resistance: Highly resistant to UV rays, ozone, rain, snow, and extreme weather conditions, preventing brittleness from aging.
Superior Chemical Stability: Resistant to weak acids, weak alkalis, alcohols, salt solutions, animal and vegetable oils, etc. Note: It has poor resistance to concentrated acids, strong alkalis, aromatic hydrocarbons, ketones, and certain solvents (e.g., gasoline).
Good Electrical Insulation: Maintains good insulating properties even in humid and high-temperature environments
Physiologically Inert: Non-toxic and odorless, complies with regulations like FDA for food contact and medical applications, suitable for high-hygiene sectors.
Gas Permeability: Permeability to gases (e.g., nitrogen, oxygen) is much higher than most organic rubbers, a characteristic to consider in certain sealing applications.
VMQ O-Rings are commonly used in sealing applications with special requirements for temperature, weather resistance, or hygiene:
Automotive Industry: High-temperature seals around engines, turbocharger systems, headlight seals, cooling systems for new energy vehicle batteries/electronic controls.
Household Appliances: Parts exposed to high-temperature steam in rice cookers, ovens, coffee makers, water dispensers, etc.
Food & Medical: Food processing equipment, medical devices, pharmaceutical packaging, baby bottles/pacifiers.
Aerospace: Seals in aircraft for high-altitude low-temperature and high-temperature conditions.
Lighting Industry: Seals for LED lights, outdoor lighting to prevent UV degradation.
Other Industries: Static sealing applications requiring long-term stability and aging resistance.
| Material Code | Material Name | Temp. Range (approx.) | Key Advantages | Key Disadvantages | Typical Applications |
|---|---|---|---|---|---|
| VMQ | Silicone Rubber | -60°C ~ +225°C | High/low temp resistance, weather resistance, non-toxic | Poor mechanical strength, poor oil resistance | Hot air/steam, food/medical, appliances |
| NBR | Nitrile Rubber | -30°C ~ +120°C | Good oil resistance, cost-effective | Poor ozone & high-temp resistance | Hydraulic oil, fuel systems (diesel) |
| FKM/FPM | Fluorocarbon Rubber | -20°C ~ +230°C | High temp, oil, & chemical resistance | Poor low-temp performance, expensive | Automotive fuel systems, chemical industry |
| EPDM | EPDM Rubber | -50°C ~ +150°C | Resistant to steam, ozone, weathering | Not resistant to mineral oils | Automotive cooling systems, plumbing, outdoor seals |
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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