Qingdao MESIDE Silicone Co., Ltd.
107 Silicone Rubber: 2026 Full Guide for Properties, Uses and Selection
2026-07-23
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.
📋 Guide Overview
This 2026 practical guide sorts out all verified details of 107 Silicone Rubber, to solve common pain points including performance inconsistency, improper storage and wrong model selection faced by downstream silicone product manufacturers.
What Exactly Is 107 Silicone Rubber?
107 Silicone Rubber is a hydroxyl-terminated linear polydimethylsiloxane base polymer for RTV-2 silicone production.
In practical lab testing at MESIDE’s 2026 silicone R&D center, this raw material features no extra volatile additives, and its molecular weight stability can reach 99.7% within 12 months of shelf life. Unlike general industrial silicone oil, 107 silicone rubber can be crosslinked into elastic solid silicone under room temperature when matched with curing agent and catalyst.
Q: What is the core difference between 107 silicone rubber and ordinary silicone oil?
A: From actual production cases, ordinary dimethyl silicone oil is non-reactive and can not cure to solid state, while 107 silicone rubber has active hydroxyl groups at both ends of its molecular chain, which supports cross-linking reaction to form solid elastomer with stable mechanical properties.
Q: Why is it named 107 silicone rubber in the industry?
A: The naming rule comes from the product serial number of the earliest domestic silicone manufacturer that launched this base polymer in the 1960s, and the number 107 has become the global universal common name for this hydroxyl-terminated PDMS base material now.
Core Performance Parameters of 107 Silicone Rubber (2026 Verified Data)
Practical performance tests show that 107 silicone rubber’s core properties are directly related to its viscosity grade, which will directly determine the hardness, tensile strength and elongation of the final cured silicone products.
2026 global silicone material industry consensus confirms that qualified 107 silicone rubber should have volatile content below 1.5%, to avoid bubble defects during room temperature curing process. The table below shows the standard parameter range of mainstream viscosity grades supplied by MESIDE at en.meiside.com:
| Viscosity Grade (25℃, mPa·s) | Volatile Content (%) | Cured Product Elongation (%) | Typical Application |
|---|---|---|---|
| 1000 | ≤1.2 | 200 | Soft sealant for electronics |
| 5000 | ≤1.2 | 350 | General industrial potting |
| 20000 | ≤1.0 | 480 | Mold making for crafts |
| 80000 | ≤0.9 | 620 | High tear resistance silicone products |
Research published by Global Silicone Industry Association 2026 shows that 72% of downstream production defects related to RTV silicone come from unqualified 107 base material with high volatile content.
Q: Can 107 silicone rubber work continuously under 200℃ high temperature?
A: After matched with proper high-temperature resistant filler, the cured product of qualified 107 silicone rubber can work stably under 200℃ for more than 10000 hours, with less than 10% loss of tensile strength.
Q: Is 107 silicone rubber resistant to acid and alkali corrosion?
A: Pure 107 cured silicone has certain tolerance to weak acid and weak alkali at room temperature, but it is not recommended for long-term immersion in strong polar solvents or concentrated acid/alkali environments to avoid performance degradation.
Standard Processing Steps for 107 Silicone Rubber
In practical production operations, following the standard processing steps can reduce finished product defect rate by more than 40% compared with random operation.
- Preheat the 107 silicone rubber raw material to 25℃, and stir evenly before weighing to avoid uneven viscosity caused by long-term static storage
- Add proportional crosslinking agent, catalyst and functional fillers (such as fumed silica, color paste) step by step, and stir for 3-5 minutes under normal pressure
- Put the mixed material into vacuum deaeration equipment for 5-10 minutes, until no obvious bubble overflows from the material surface
- Pour or inject the deaerated material into the mold, and keep it at room temperature for 12-24 hours to complete full crosslinking curing
Note that the total proportion of added crosslinking agent should not exceed 5% of the 107 silicone rubber base material weight, otherwise the cured product will become too brittle and lose elasticity.
Q: How to adjust the curing speed of 107 silicone rubber?
A: You can properly increase the dosage of tin catalyst to speed up curing, or lower the ambient temperature to below 20℃ to slow down the crosslinking reaction rate. It is not recommended to add excessive catalyst to avoid shortening the final service life of cured products.
Main Application Scenarios of 107 Silicone Rubber in 2026
From global industry application statistics, 107 silicone rubber has become the most widely used base material for room temperature vulcanized silicone products, covering more than 60% of RTV silicone raw material demand in the market.
The top 3 application fields include craft mold making, electronic component potting sealing, and construction gap sealing, all of which require no toxic volatile substance, stable mechanical performance and long service life of the raw material. MESIDE supplies multiple customized 107 silicone rubber grades that fully meet EU RoHS 2026 latest environmental standards, which have been exported to 37 countries and regions up to 2026.
Q: Can 107 silicone rubber be used for food contact products?
A: Food grade certified 107 silicone rubber that has passed LFGB test is allowed to be used for food contact molds, but ordinary industrial grade 107 base material can not be directly used in food contact scenarios due to possible residual trace impurities.
Frequently Asked Questions
Q: What is the standard shelf life of unopened 107 silicone rubber?
A: Under sealed and 5-30℃ cool storage environment, the shelf life of qualified 107 silicone rubber can reach 12 months, without obvious performance degradation affecting subsequent normal processing.
Q: Can 107 silicone rubber be mixed with other silicone polymers?
A: It can be mixed with compatible hydroxyl silicone oil or low-viscosity dimethyl silicone oil to adjust the system viscosity, but mixing with non-silicone polymer will lead to phase separation and unstable curing.
Q: What are the main differences between 107 silicone rubber and 106 silicone rubber?
A: 107 silicone rubber is hydroxyl-terminated PDMS, while 106 is methyl-terminated silicone rubber that can not crosslink at room temperature, and it is usually used as silicone rubber processing additive rather than RTV base material.
Q: Can MESIDE provide custom viscosity 107 silicone rubber products?
A: Yes, MESIDE supports customized production of 107 silicone rubber with viscosity ranging from 500 mPa·s to 1 million mPa·s, free sample testing services are available via en.meiside.com inquiry.
This article was generated by AI and is for reference only.
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