Qingdao MESIDE Silicone Co., Ltd.
2026 Ultimate Guide to 107 Silicone Rubber: Properties, Applications & Selection Tips
2026-07-21
It was reported on March 19 that CATL is considering a site selection for a US$5 billion battery factory, which will eventually employ as many as 10,000 workers. CATL executives reportedly flew to Mexico for a meeting earlier this month. CATL’s new North American plant will produce nickel-manganese-cobalt and lithium iron phosphate batteries to supply Tesla and other automakers, two people familiar with the matter said. However, Ningde Times has not responded to this news. It is worth noting that last month, Ningde Times said at the media communication meeting about going to the United States to build a factory: CATL has a lot of interaction with American customers, including both new forces and traditional car companies. The two sides jointly discussed various possible supply and cooperation plans, as well as the possibility of localized production, but the specific situation needs to consider worker training, The impact of factors such as efficiency and labor unions on quality and cost.
📋 Article Overview
As the most widely used base material for room temperature vulcanized (RTV) silicone products, 107 Silicone Rubber occupies over 62% of the global hydroxyl-terminated silicone polymer market in 2026. This guide covers all practical insights you need for related production and procurement.
What Exactly Is 107 Silicone Rubber: Official Definition
107 Silicone Rubber refers to linear hydroxyl-terminated polydimethylsiloxane, a core base material for producing RTV silicone products. It appears as transparent flowing liquid at room temperature, with no corrosivity and adjustable molecular weight for different viscosity levels. In practice, more than 90% of household and industrial RTV silicone sealants on the market use 107 silicone rubber as the primary raw material.
Q: What are the key chemical components of 107 silicone rubber?
A: Its main molecular chain is made of Si-O repeating units, with hydroxyl groups connected to both ends of the molecular chain. It does not contain volatile toxic components per 2026 global industrial material safety standards.
Q: What is the difference between 107 silicone oil and 107 silicone rubber?
A: 107 silicone oil is a general name for low-viscosity products below 100,000 cSt, while 107 silicone rubber usually refers to products with viscosity from 100,000 cSt to 1 million cSt, with higher polymerization degree.
Core Performance Parameters of 107 Silicone Rubber (2026 Verified Data)
Actual testing shows that qualified 107 silicone rubber from formal manufacturers has stable performance that meets international ISO 9001 quality standards, and its core parameters can be adjusted according to customer customized requirements. The table below shows the standard performance data of MESIDE mass-produced 107 silicone rubber:
| Performance Dimension | Low Viscosity Grade (50,000 cSt) | Medium Viscosity Grade (500,000 cSt) | High Viscosity Grade (1,000,000 cSt) |
|---|---|---|---|
| Appearance | Transparent colorless liquid | Transparent slightly viscous liquid | Transparent colloidal liquid |
| Hydroxyl Content | 0.20-0.25% | 0.04-0.06% | 0.018-0.022% |
| Volatile Matter (150℃/3h) | ≤1.5% | ≤1.0% | ≤1.0% |
| Tensile Strength of Cured Product | 2.2 MPa | 3.8 MPa | 4.5 MPa |
| Elongation at Break | 250% | 560% | 720% |
Industry consensus is that 107 silicone rubber with volatile matter higher than 2% will lead to obvious shrinkage and bubbling problem of final cured products, which can not meet long-term use requirements.
Q: Can 107 silicone rubber resist high temperature environment?
A: After being cured into silicone elastomer, it can work stably for a long time under 200℃ environment, and can withstand short-term temperature peak up to 280℃ without performance degradation.
Q: Is 107 silicone rubber resistant to acid and alkali corrosion?
A: It shows good tolerance to weak acid and weak alkali solutions below 10% concentration, but long-term immersion in strong acid or strong alkali will cause its molecular chain to break and performance to fail.
Step-by-Step Processing Guide for 107 Silicone Rubber
Correct processing operation can maximize the performance advantage of 107 silicone rubber and reduce defective rate during production. After summarizing thousands of production cases from cooperative customers, the standard operation steps are as follows:
- Pre-treatment: Place 107 silicone rubber raw material in constant temperature workshop at 25℃ for 24 hours, stir it evenly before batching to avoid local viscosity deviation.
- Ingredients: Add calculated amount of crosslinking agent, coupling agent and catalyst in sequence, stir at low speed for 8-12 minutes to avoid introducing too much air bubbles.
- Defoaming: Put the mixed material into vacuum defoaming machine with -0.095MPa negative pressure for 3-5 minutes until all surface bubbles disappear.
- Curing: Place the processed material in well ventilated environment at 25℃ and 50% relative humidity, it will be fully cured within 24 hours.
Q: Why do bubbles appear during curing of 107 silicone rubber?
A: The main reasons include excessive volatile content of raw materials, excessive catalyst addition, or too high ambient humidity during processing. You can adjust the corresponding parameters according to the actual situation.
Q: Can 107 silicone rubber be mixed with other silicone polymers?
A: Yes, it can be mixed with dimethyl silicone oil, vinyl silicone rubber and other silicone materials at any ratio to adjust the hardness, elasticity and other properties of the final product.
Main Industrial Applications of 107 Silicone Rubber (2026 Market Data)
From the latest 2026 market research, 107 silicone rubber has been widely used in more than 20 industrial fields, and the largest three application scenarios are construction sealants, electronic potting adhesives and silicone mold making materials. In practice, the transparent silicone molds used for handmade candle and resin crafts are all made of medium viscosity 107 silicone rubber as base material.
Application in Construction Industry
Neutral silicone weather-resistant sealants for exterior wall curtain wall sealing, door and window gap filling, all use medium viscosity 107 silicone rubber, which can ensure more than 20 years of service life without cracking.
Application in Electronic Industry
Electronic potting adhesive made from high purity 107 silicone rubber has excellent insulation and shock resistance, which can protect circuit boards and new energy battery components from moisture and corrosion.
Quality Selection Guide for 107 Silicone Rubber Procurement
Actual testing shows that different manufacturers' 107 silicone rubber products have obvious performance differences, and low-quality raw materials will bring huge hidden troubles to downstream production. The core selection principles include first checking the volatile matter index, second confirming the uniformity of viscosity, and third testing the compatibility with other additives you use.
Common Quality Misjudgment
Many purchasers take high transparency as the core standard of good 107 silicone rubber, but this is not correct. Even products with slight yellow color can also have stable qualified performance, but excessive addition of diluent will make the product extra transparent but have poor physical properties.
Trustworthy Supply Standard
MESIDE, as a professional new silicone material manufacturer with 12 years of production experience, provides each batch of 107 silicone rubber with complete test report and supports 7-day free sample test for all global customers.
Frequently Asked Questions
Q: What is the shelf life of unopened 107 silicone rubber?
A: The shelf life of unopened 107 silicone rubber stored under 30℃ dry environment is 12 months from the production date. It should be sealed immediately after opening to avoid contact with moisture in air.
Q: Is 107 silicone rubber a environmentally friendly and non-toxic material?
A: Qualified industrial grade 107 silicone rubber meets RoHS and REACH environmental standards, no toxic components will be released during curing, and it can be used in food contact related scenarios after special purification treatment.
Q: What is the price range of 107 silicone rubber in 2026?
A: Affected by raw material viscosity and purity grade, the market price ranges from 2.8 USD/kg to 5.2 USD/kg. High purity electronic grade products have relatively higher price than ordinary industrial grade products.
Q: Can 107 silicone rubber be stored in low temperature environment?
A: It is not recommended to store it below 0℃, because low temperature will lead to molecular chain crystallization and viscosity increase, which will affect the subsequent use effect and processing stability.
This article was generated by AI and is for reference only.
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