Birla Carbon
Carbon black for sealing systems | N550 N660 supplier China
This page is for sealing systems. Birla Carbon's sealing-systems product table names N550 and N660 among the four grades published here. The page heading on Birla Carbon's site is weather stripping.
Recommended grades

Specifications
| N550 on the Birla Carbon sealing-systems page | A standard, low surface area, high structure semi-reinforcing carbon black with a good balance of properties for belts, anti-vibration systems, hoses, sealing systems, roofing and general purpose masterbatch and compounding. |
|---|---|
| N660 on the Birla Carbon sealing-systems page | A standard, low surface area, medium-low structure semi-reinforcing carbon black with a good balance of properties for belts, anti-vibration systems, hoses, sealing systems and general purpose masterbatch and compounding. |
| Birla Carbon sealing-systems page, portfolio | Our portfolio of high performance carbon blacks enables compounders and sealing systems manufacturers to tailor properties for excellence in processing, appearance and sealing performance. |
| Birla Carbon sealing-systems page, colloidal properties | Unique colloidal properties to enable lower energy, faster mixing, extended screen life and reduced scrap |
| Birla Carbon sealing-systems page, resistivity | Tailored morphologies to meet compound electrical resistivity specifications |
| Birla Carbon sealing-systems page, residue | Low residue providing Class A surface finish and extended screen life and scrap reduction |
| Birla Carbon sealing-systems page, mechanical properties | Our comprehensive range of ASTM and unique morphology products enables the optimum balance of hardness, tensile strength and sealing force to consistently ensure on-target compound performance. |
| Birla Carbon sealing-systems page, weather strip resistivity | Our uniquely designed products enable high resistivity at high loadings while maintaining required levels of reinforcement. Such products can be used to address increasingly stringent OEM specifications for compound electrical resistivity, for example when formulating for galvanic corrosion resistant compounds for weather strip. |
The other sentences are what that page says a sealing compound is being asked to do: processing, appearance, sealing performance, surface finish, and electrical resistivity for weather strip. They describe Birla Carbon's published range.
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Data sources
Birla Carbon sealing systems page: https://www.birlacarbon.com/mechanical-rubber-goods/sealing-systems/
Cited values
- What is the cited value for N550 on the Birla Carbon sealing-systems page?
- A standard, low surface area, high structure semi-reinforcing carbon black with a good balance of properties for belts, anti-vibration systems, hoses, sealing systems, roofing and general purpose masterbatch and compounding.
- What is the cited value for N660 on the Birla Carbon sealing-systems page?
- A standard, low surface area, medium-low structure semi-reinforcing carbon black with a good balance of properties for belts, anti-vibration systems, hoses, sealing systems and general purpose masterbatch and compounding.
- What is the cited value for Birla Carbon sealing-systems page, portfolio?
- Our portfolio of high performance carbon blacks enables compounders and sealing systems manufacturers to tailor properties for excellence in processing, appearance and sealing performance.
- What is the cited value for Birla Carbon sealing-systems page, colloidal properties?
- Unique colloidal properties to enable lower energy, faster mixing, extended screen life and reduced scrap
- What is the cited value for Birla Carbon sealing-systems page, resistivity?
- Tailored morphologies to meet compound electrical resistivity specifications
- What is the cited value for Birla Carbon sealing-systems page, residue?
- Low residue providing Class A surface finish and extended screen life and scrap reduction
- What is the cited value for Birla Carbon sealing-systems page, mechanical properties?
- Our comprehensive range of ASTM and unique morphology products enables the optimum balance of hardness, tensile strength and sealing force to consistently ensure on-target compound performance.
- What is the cited value for Birla Carbon sealing-systems page, weather strip resistivity?
- Our uniquely designed products enable high resistivity at high loadings while maintaining required levels of reinforcement. Such products can be used to address increasingly stringent OEM specifications for compound electrical resistivity, for example when formulating for galvanic corrosion resistant compounds for weather strip.
Last updated 2026-10-15